Johan Hovold [Mon, 27 Aug 2018 08:21:52 +0000 (10:21 +0200)]
NFC: nfcmrvl_uart: fix OF child-node lookup
Use the new of_get_compatible_child() helper to lookup the nfc child
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the parent node).
Fixes: 48343e358107 ("NFC: nfcmrvl: add UART driver") Fixes: 90d6d4b3b0e2 ("NFC: nfcmrvl: update device tree bindings for Marvell NFC") Cc: stable <stable@vger.kernel.org> # 4.2 Cc: Vincent Cuissard <cuissard@marvell.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Johan Hovold [Mon, 27 Aug 2018 08:21:51 +0000 (10:21 +0200)]
net: stmmac: dwmac-sun8i: fix OF child-node lookup
Use the new of_get_compatible_child() helper to lookup the mdio-internal
child node instead of using of_find_compatible_node(), which searches
the entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the mdio-mux node). Fortunately, this was inadvertently
balanced by a failure to drop the mdio-mux reference after lookup.
While at it, also fix the related mdio-internal- and phy-node reference
leaks.
Fixes: bb7ec09baf93 ("net: stmmac: dwmac-sun8i: Handle integrated/external MDIOs") Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Cc: Jose Abreu <joabreu@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Johan Hovold [Mon, 27 Aug 2018 08:21:50 +0000 (10:21 +0200)]
net: bcmgenet: fix OF child-node lookup
Use the new of_get_compatible_child() helper to lookup the mdio child
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the node of the device being probed).
Fixes: 02583f325ba4 ("net: bcmgenet: add MDIO routines") Cc: stable <stable@vger.kernel.org> # 3.15 Cc: David S. Miller <davem@davemloft.net> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Johan Hovold [Mon, 27 Aug 2018 08:21:47 +0000 (10:21 +0200)]
drm/msm: fix OF child-node lookup
Use the new of_get_compatible_child() helper to lookup the legacy
pwrlevels child node instead of using of_find_compatible_node(), which
searches the entire tree from a given start node and thus can return an
unrelated (i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the probed device's node).
While at it, also fix the related child-node reference leak.
Fixes: 89ce353b2ab4 ("drm/msm: gpu: Use OPP tables if we can") Cc: stable <stable@vger.kernel.org> # 4.12 Cc: Jordan Crouse <jcrouse@codeaurora.org> Cc: Rob Clark <robdclark@gmail.com> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Johan Hovold [Mon, 27 Aug 2018 08:21:46 +0000 (10:21 +0200)]
drm/mediatek: fix OF sibling-node lookup
Use the new of_get_compatible_child() helper to lookup the sibling
instead of using of_find_compatible_node(), which searches the entire
tree from a given start node and thus can return an unrelated (i.e.
non-sibling) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the parent device node).
While at it, also fix the related cec-node reference leak.
Fixes: 98b4e84d5174 ("drm/mediatek: Add HDMI support") Cc: stable <stable@vger.kernel.org> # 4.8 Cc: Junzhi Zhao <junzhi.zhao@mediatek.com> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: CK Hu <ck.hu@mediatek.com> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 22 Oct 2018 14:03:54 +0000 (09:03 -0500)]
of: Add missing exports of node name compare functions
Commit 54a36a4b1c31 ("of: add node name compare helper functions")
failed to add the module exports to of_node_name_eq() and
of_node_name_prefix(). Add them now.
Fixes: 54a36a4b1c31 ("of: add node name compare helper functions") Signed-off-by: Rob Herring <robh@kernel.org>
Chris Brandt [Thu, 27 Sep 2018 14:12:58 +0000 (09:12 -0500)]
dt-bindings: timer: ostm: Add R7S9210 support
The R7S9210 belongs to the RZ/A2 SoC series
Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Rob Herring <robh@kernel.org>
Biju Das [Thu, 27 Sep 2018 12:23:34 +0000 (13:23 +0100)]
dt-bindings: phy: rcar-gen2: Add r8a7744 support
Add USB PHY support for r8a7744 SoC. Renesas RZ/G1N (R8A7744)
USB PHY is identical to the R-Car Gen2 family.
Signed-off-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Rob Herring <robh@kernel.org>
Biju Das [Thu, 27 Sep 2018 12:08:48 +0000 (13:08 +0100)]
dt-bindings: can: rcar_can: Add r8a7744 support
Document RZ/G1N (r8a7744) SoC specific bindings.
Signed-off-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Rob Herring <robh@kernel.org>
Biju Das [Tue, 25 Sep 2018 17:18:16 +0000 (18:18 +0100)]
dt-bindings: timer: renesas, cmt: Document r8a7744 CMT support
Document SoC specific compatible strings for r8a7744. No driver change
is needed as the fallback strings will activate the right code.
Signed-off-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rob Herring <robh@kernel.org>
Biju Das [Tue, 25 Sep 2018 17:01:04 +0000 (18:01 +0100)]
dt-bindings: thermal: rcar: Add device tree support for r8a7744
Add thermal sensor support for r8a7744 SoC. The Renesas RZ/G1N
(r8a7744) thermal sensor module is identical to the R-Car Gen2 family.
No driver change is needed due to the fallback compatible value
"renesas,rcar-gen2-thermal".
Signed-off-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com> Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rob Herring <robh@kernel.org>
Documentation: dt: Add binding for /secure-chosen/stdout-path
Some platforms may use a single device tree to describe two address
spaces, as described in 0d292a2fa1b9 ("Documentation: dt: Add bindings
for Secure-only devices"). For these platforms it makes sense to define
a secure counterpart of /chosen, namely: /secure-chosen. This new node
is meant to be used by the secure firmware to pass data to the secure
OS. Only the stdout-path property is supported for now.
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Tue, 15 May 2018 13:32:55 +0000 (08:32 -0500)]
dt-bindings: arm: alpine: Move CPU control related binding to cpu-enable-method/al,alpine-smp
It is best practice to have 1 binding per file, so board level bindings
should be separate for various misc SoC bindings. Move the Alpine CPU
control to al,alpine-smp and we can also remove a cross reference.
Cc: Tsahee Zidenberg <tsahee@annapurnalabs.com> Cc: Antoine Tenart <antoine.tenart@free-electrons.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 1 Oct 2018 15:54:51 +0000 (10:54 -0500)]
of: Fix property name in of_node_get_device_type
Commit da99777d1948 ("of: Add device_type access helper functions")
added a new helper not yet used in preparation for some treewide clean
up of accesses to 'device_type' properties. Unfortunately, there's an
error and 'type' was used for the property name. Fix this.
Fixes: da99777d1948 ("of: Add device_type access helper functions") Cc: Frank Rowand <frowand.list@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Tue, 21 Aug 2018 20:41:19 +0000 (15:41 -0500)]
c6x: enable building all dtbs
Enable the 'dtbs' target for c6x. This allows building all the dts
files in arch/c6x/boot/dts/ for enabled platforms or when
COMPILE_TEST and OF_ALL_DTBS are enabled.
Cc: Mark Salter <msalter@redhat.com> Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com> Cc: linux-c6x-dev@linux-c6x.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Thu, 2 Aug 2018 21:32:21 +0000 (15:32 -0600)]
powerpc: enable building all dtbs
Enable the 'dtbs' target for powerpc. This allows building all the dts
files in arch/powerpc/boot/dts/ when COMPILE_TEST and OF_ALL_DTBS are
enabled.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Wed, 10 Jan 2018 21:19:37 +0000 (15:19 -0600)]
kbuild: consolidate Devicetree dtb build rules
There is nothing arch specific about building dtb files other than their
location under /arch/*/boot/dts/. Keeping each arch aligned is a pain.
The dependencies and supported targets are all slightly different.
Also, a cross-compiler for each arch is needed, but really the host
compiler preprocessor is perfectly fine for building dtbs. Move the
build rules to a common location and remove the arch specific ones. This
is done in a single step to avoid warnings about overriding rules.
The build dependencies had been a mixture of 'scripts' and/or 'prepare'.
These pull in several dependencies some of which need a target compiler
(specifically devicetable-offsets.h) and aren't needed to build dtbs.
All that is really needed is dtc, so adjust the dependencies to only be
dtc.
This change enables support 'dtbs_install' on some arches which were
missing the target.
Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Paul Burton <paul.burton@mips.com> Acked-by: Ley Foon Tan <ley.foon.tan@intel.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Michal Marek <michal.lkml@markovi.net> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: linux-kbuild@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-mips@linux-mips.org Cc: nios2-dev@lists.rocketboards.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-xtensa@linux-xtensa.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Wed, 1 Aug 2018 17:49:58 +0000 (11:49 -0600)]
nios2: fix building all dtbs
nios2 has a 'dtbs' target, but nothing is added to 'dtb-*' targets and
no dtbs were getting built. This enables building all the dts files in
arch/nios2/boot/dts/ when COMPILE_TEST and OF_ALL_DTBS are enabled.
Cc: Ley Foon Tan <lftan@altera.com> Cc: nios2-dev@lists.rocketboards.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Wed, 1 Aug 2018 20:14:12 +0000 (14:14 -0600)]
nios2: use common rules to build built-in dtb
Using the common build support for built-in dtb files just requires
adding a .dtb.o target to obj-y.
This has the side effect that CONFIG_NIOS2_DTB_SOURCE should now be just
the dts filename in arch/nios2/boot/dts/ directory. Before any path was
supported, but if you want to build in your dtb to the kernel, it should
be in the kernel tree.
Cc: Ley Foon Tan <lftan@altera.com> Cc: nios2-dev@lists.rocketboards.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Thu, 8 Oct 2015 00:21:18 +0000 (19:21 -0500)]
nios2: build .dtb files in dts directory
Align nios2 with other architectures which build the dtb files in the
same directory as the dts files. This is also in line with most other
build targets which are located in the same directory as the source.
This move will help enable the 'dtbs' target which builds all the dtbs
regardless of kernel config.
This transition could break some scripts if they expect dtb files in
the old location.
Cc: Ley Foon Tan <lftan@altera.com> Cc: nios2-dev@lists.rocketboards.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Tue, 13 Oct 2015 18:24:16 +0000 (13:24 -0500)]
powerpc: build .dtb files in dts directory
Align powerpc with other architectures which build the dtb files in the
same directory as the dts files. This is also in line with most other
build targets which are located in the same directory as the source.
This move will help enable the 'dtbs' target which builds all the dtbs
regardless of kernel config.
This transition could break some scripts if they expect dtb files in the
old location.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Tue, 28 Aug 2018 00:50:26 +0000 (19:50 -0500)]
xtensa: Convert to using %pOFn instead of device_node.name
In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.
Cc: Chris Zankel <chris@zankel.net> Cc: linux-xtensa@linux-xtensa.org Acked-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 18:27:03 +0000 (13:27 -0500)]
microblaze: get cpu node with of_get_cpu_node
"device_type" use is deprecated for FDT though it has continued to be used
for nodes like cpu nodes. Use of_get_cpu_node() instead which works using
node names by default. This will allow the eventually removal of cpu
device_type properties.
Also, fix a leaked reference by adding a missing of_node_put.
Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 18:48:13 +0000 (13:48 -0500)]
fbdev: fsl-diu: get cpu node with of_get_cpu_node
"device_type" use is deprecated for FDT though it has continued to be used
for nodes like cpu nodes. Use of_get_cpu_node() instead which works using
node names by default. This will allow the eventually removal of cpu
device_type properties.
Acked-by: Timur Tabi <timur@kernel.org> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: linux-fbdev@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 14:47:00 +0000 (09:47 -0500)]
of: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
Cc: Frank Rowand <frowand.list@gmail.com> Cc: devicetree@vger.kernel.org Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 14:46:27 +0000 (09:46 -0500)]
iommu: fsl_pamu: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
Cc: Joerg Roedel <joro@8bytes.org> Cc: iommu@lists.linux-foundation.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 13:01:47 +0000 (08:01 -0500)]
edac: cpc925: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
The error messages are removed in the process as it's not the driver's
job to be checking cpu nodes. Any problems with cpu nodes should be
noticed by the architecture code.
Rob Herring [Mon, 27 Aug 2018 14:45:53 +0000 (09:45 -0500)]
clk: mvebu: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
Cc: Michael Turquette <mturquette@baylibre.com> Cc: linux-clk@vger.kernel.org Acked-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 14:44:05 +0000 (09:44 -0500)]
x86: DT: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 14:43:40 +0000 (09:43 -0500)]
SH: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: linux-sh@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 18:41:31 +0000 (13:41 -0500)]
powerpc: 8xx: get cpu node with of_get_cpu_node
"device_type" use is deprecated for FDT though it has continued to be used
for nodes like cpu nodes. Use of_get_cpu_node() instead which works using
node names by default. This will allow the eventually removal of cpu
device_type properties.
Also, fix a leaked reference and add a missing of_node_put.
Cc: Vitaly Bordug <vitb@kernel.crashing.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 18:40:26 +0000 (13:40 -0500)]
powerpc: 4xx: get cpu node with of_get_cpu_node
"device_type" use is deprecated for FDT though it has continued to be used
for nodes like cpu nodes. Use of_get_cpu_node() instead which works using
node names by default. This will allow the eventually removal of cpu
device_type properties.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 17:24:09 +0000 (12:24 -0500)]
powerpc: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 17:21:39 +0000 (12:21 -0500)]
openrisc: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
This also fixes a leaked reference for cpus node.
Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: openrisc@lists.librecores.org Acked-by: Stafford Horne <shorne@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 18:27:25 +0000 (13:27 -0500)]
nios2: get cpu node with of_get_cpu_node
"device_type" use is deprecated for FDT though it has continued to be used
for nodes like cpu nodes. Use of_get_cpu_node() instead which works using
node names by default. This will allow the eventually removal of cpu
device_type properties.
Also, fix a leaked reference by adding a missing of_node_put.
Cc: Ley Foon Tan <lftan@altera.com> Cc: nios2-dev@lists.rocketboards.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 12:53:30 +0000 (07:53 -0500)]
c6x: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names
in preference to the deprecated (for FDT) device_type == "cpu".
Cc: Mark Salter <msalter@redhat.com> Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com> Cc: linux-c6x-dev@linux-c6x.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 14:43:01 +0000 (09:43 -0500)]
arm64: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: linux-arm-kernel@lists.infradead.org Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 14:42:49 +0000 (09:42 -0500)]
ARM: shmobile: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
Cc: Magnus Damm <magnus.damm@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-renesas-soc@vger.kernel.org Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 15:59:05 +0000 (10:59 -0500)]
ARM: topology: remove unneeded check for /cpus node
Checking for "/cpus" node is not necessary as of_get_cpu_node() will fail
later on anyways. The call to of_find_node_by_path() also leaks a
reference. So just remove the check.
Cc: Russell King <linux@armlinux.org.uk> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 15:53:34 +0000 (10:53 -0500)]
ARM: use for_each_of_cpu_node iterator
Use the for_each_of_cpu_node iterator to iterate over cpu nodes. This
has the side effect of defaulting to iterating using "cpu" node names in
preference to the deprecated (for FDT) device_type == "cpu".
Cc: Russell King <linux@armlinux.org.uk> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 18:46:51 +0000 (13:46 -0500)]
of: Support matching cpu nodes with no 'reg' property
For some single core ARM systems, the DTs can have a single cpu node
without a reg property and #address-cells == 0. This case is valid and
should match on cpu #0.
Cc: Frank Rowand <frowand.list@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Wed, 22 Aug 2018 20:04:40 +0000 (15:04 -0500)]
of: Add cpu node iterator for_each_of_cpu_node()
Iterating thru cpu nodes is a common pattern. Create a common iterator
which can find child nodes either by node name or device_type == cpu.
Using the former will allow for eventually dropping device_type
properties which are deprecated for FDT.
Cc: Frank Rowand <frowand.list@gmail.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rob Herring <robh@kernel.org>
of: unittest: Disable interrupt node tests for old world MAC systems
On systems with OF_IMAP_OLDWORLD_MAC set in of_irq_workarounds, the
devicetree interrupt parsing code is different, causing unit tests of
devicetree interrupt nodes to fail. Due to a bug in unittest code, which
tries to dereference an uninitialized pointer, this results in a crash.
Initial introduction of Facebook TiogaPass family equipped with
Aspeed 2500 BMC SoC. TiogaPass is a x86 server development kit
with a ASPEED ast2500 BMC manufactured by Facebook.
This adds an entry of Facebook in Documentation for vendor prefix
Signed-off-by: Vijay Khemka <vijaykhemka@fb.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
which can be summarized as :
power (mW) = capacitance * freq_mhz/1000 * (voltage_mv/1000)^2
or
power (mW) = (capacitance * freq_mhz * (voltage_mv/1000)^2) / 1000
then
power (mW) = power (uW) / 1000
so
power (uW) = capacitance * freq_mhz * (voltage_mv/1000)^2
Furthermore, if we test basic values like :
voltage_mv = 1000mV = 1V
freq_mhz = 1000Mhz
The minimum possible power, when dynamic-power-coefficient equals 1, will
be with current unit:
min power = 1 * 1000 * (1000000)^2 = 10^15 mW
which is not realistic
With the unit used by the code, the min power is
min power = 1 * 1000 * 1^2 = 1000uW = 1mW which is far more realistic
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Acked-by: Punit Agrawal <punit.agrawal@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>
Major changes are I2C and SPI bus checks, YAML output format (for
future validation), some new libfdt functions, and more libfdt
validation of dtbs.
The YAML addition adds an optional dependency on libyaml. pkg-config is
used to test for it and pkg-config became a kconfig dependency in 4.18.
This adds the following commits from upstream:
c86da84d30e4 Add support for YAML encoded output 361b5e7d8067 Make type_marker_length helper public bfbfab047e45 pylibfdt: Add a means to add and delete notes 9005f4108e7c pylibfdt: Allow delprop() to return errors b94c056b137e Make valgrind optional fd06c54d4711 tests: Better testing of dtc -I fs mode c3f50c9a86d9 tests: Allow dtbs_equal_unordered to ignore mem reserves 0ac9fdee37c7 dtc: trivial '-I fs -O dts' test 0fd1c8c783f3 pylibfdt: fdt_get_mem_rsv returns 2 uint64_t values 04853cad18f4 pylibfdt: Don't incorrectly / unnecessarily override uint64_t typemap 9619c8619c37 Kill bogus TYPE_BLOB marker type ac68ff92ae20 parser: add TYPE_STRING marker to path references 90a190eb04d9 checks: add SPI bus checks 53a1bd546905 checks: add I2C bus checks 88f18909db73 dtc: Bump version to v1.4.7 85bce8b2f06d tests: Correction to vg_prepare_blob() 57f7f9e7bc7c tests: Don't call memcmp() with NULL arguments c12b2b0c20eb libfdt: fdt_address_cells() and fdt_size_cells() 3fe0eeda0b7f livetree: Set phandle properties type to uint32 853649acceba pylibfdt: Support the sequential-write interface 9b0e4fe26093 tests: Improve fdt_resize() tests 1087504bb3e8 libfdt: Add necessary header padding in fdt_create() c72fa777e613 libfdt: Copy the struct region in fdt_resize() 32b9c6130762 Preserve datatype markers when emitting dts format 6dcb8ba408ec libfdt: Add helpers for accessing unaligned words 42607f21d43e tests: Fix incorrect check name 'prop_name_chars' 9d78c33bf8a1 tests: fix grep for checks error messages b770f3d1c13f pylibfdt: Support setting the name of a node 2f0d07e678e0 pylibfdt: Add functions to set and get properties as strings 354d3dc55939 pylibfdt: Update the bytearray size with pack() 3c374d46acce pylibfdt: Allow reading integer values from properties 49d32ce40bb4 pylibfdt: Use an unsigned type for fdt32_t 481246a0c13a pylibfdt: Avoid accessing the internal _fdt member in tests 9aafa33d99ed pylibfdt: Add functions to update properties 5a598671fdbf pylibfdt: Support device-tree creation/expansion 483e170625e1 pylibfdt: Add support for reading the memory reserve map 29bb05aa4200 pylibfdt: Add support for the rest of the header functions 582a7159a5d0 pylibfdt: Add support for fdt_next_node() f0f8c9169819 pylibfdt: Reorder functions to match libfdt.h 64a69d123935 pylibfdt: Return string instead of bytearray from getprop() 4d09a83420df fdtput: Add documentation e617cbe1bd67 fdtget: Add documentation 180a93924014 Use <inttypes.h> format specifiers in a bunch of places we should b9af3b396576 scripts/dtc: Fixed format mismatch in fprintf 4b8fcc3d015c libfdt: Add fdt_check_full() function c14223fb2292 tests: Use valgrind client requests for better checking 5b67d2b955a3 tests: Better handling of valgrind errors saving blobs e2556aaeb506 tests: Remove unused #define fb9c6abddaa8 Use size_t for blob lengths in utilfdt_read* 0112fda03bf6 libfdt: Add fdt_header_size() 6473a21d8bfe Consolidate utilfdt_read_len() variants d5db5382c5e5 libfdt: Safer access to memory reservations 719d582e98ec libfdt: Propagate name errors in fdt_getprop_by_offset() 70166d62a27f libfdt: Safer access to strings section eb890c0f77dc libfdt: Make fdt_check_header() more thorough 899d6fad93f3 libfdt: Improve sequential write state checking 04b5b4062ccd libfdt: Clean up header checking functions 44d3efedc816 Preserve datatype information when parsing dts f0be81bd8de0 Make Property a subclass of bytearray 24b1f3f064d4 pylibfdt: Add a method to access the device tree directly
Rob Herring [Thu, 13 Sep 2018 20:16:22 +0000 (15:16 -0500)]
libfdt: Ensure INT_MAX is defined in libfdt_env.h
The next update of libfdt has a new dependency on INT_MAX. Update the
instances of libfdt_env.h in the kernel to either include the necessary
header with the definition or define it locally.
Cc: Russell King <linux@armlinux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linux-arm-kernel@lists.infradead.org Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Thu, 13 Sep 2018 19:38:56 +0000 (14:38 -0500)]
of/unittest: Fix I2C bus unit-address error
dtc has new checks for I2C buses. Fix the warnings in unit-addresses in
the unittests.
drivers/of/unittest-data/testcases.dtb: Warning (i2c_bus_reg): /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest14/i2c@0/test-mux-dev: I2C bus unit address format error, expected "20"
drivers/of/unittest-data/overlay_15.dtb: Warning (i2c_bus_reg): /fragment@0/__overlay__/test-unittest15/i2c@0/test-mux-dev: I2C bus unit address format error, expected "20"
Cc: Frank Rowand <frowand.list@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Tue, 11 Sep 2018 14:28:14 +0000 (09:28 -0500)]
of: fix phandle cache creation for DTs with no phandles
With commit 2025451f9289 ("of: cache phandle nodes to reduce cost of
of_find_node_by_phandle()"), a G3 PowerMac fails to boot. The root cause
is the DT for this system has no phandle properties when booted with
BootX. of_populate_phandle_cache() does not handle the case of no
phandles correctly. The problem is roundup_pow_of_two() for 0 is
undefined. The implementation subtracts 1 underflowing and then things
are in the weeds.
Fixes: 2025451f9289 ("of: cache phandle nodes to reduce cost of of_find_node_by_phandle()") Cc: stable@vger.kernel.org # 4.17+ Reported-by: Finn Thain <fthain@telegraphics.com.au> Tested-by: Stan Johnson <userm57@yahoo.com> Reviewed-by: Frank Rowand <frank.rowand@sony.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Wed, 29 Aug 2018 22:21:45 +0000 (17:21 -0500)]
of: make default address and size cells sizes private
Only some old OpenFirmware implementations rely on default sizes. Any
FDT and modern implementation should have explicit properties. Make the
OF_ROOT_NODE_*_CELLS_DEFAULT defines private so we don't get any outside
users.
This also gets us one step closer to removing the asm/prom.h dependency on
Sparc.
Cc: "David S. Miller" <davem@davemloft.net> Cc: Frank Rowand <frowand.list@gmail.com> Cc: sparclinux@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
Rob Herring [Mon, 27 Aug 2018 13:38:08 +0000 (08:38 -0500)]
of/unittest: remove use of node name pointer in overlay high level test
In preparation for removing the node name pointer, it needs to be
removed from of_unittest_overlay_high_level. However, it's not really
correct to use the node name without the unit-address and we should use
the full node name. This most easily done by iterating over the child
nodes with for_each_child_of_node() which is what of_get_child_by_name()
does internally. While at it, we might as well convert the outer loop to
use for_each_child_of_node() too instead of open coding it.
Reviewed-by: Frank Rowand <frank.rowand@sony.com> Signed-off-by: Rob Herring <robh@kernel.org>
Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"First batch of fixes post-merge window:
- A handful of devicetree changes for i.MX2{3,8} to change over to
new panel bindings. The platforms were moved from legacy
framebuffers to DRM and some development board panels hadn't yet
been converted.
- OMAP fixes related to ti-sysc driver conversion fallout, fixing
some register offsets, no_console_suspend fixes, etc.
- Droid4 changes to fix flaky eMMC probing and vibrator DTS mismerge.
- Fixed 0755->0644 permissions on a newly added file.
- Defconfig changes to make ARM Versatile more useful with QEMU
(helps testing).
- Enable defconfig options for new TI SoC platform that was merged
this window (AM6)"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm64: defconfig: Enable TI's AM6 SoC platform
ARM: defconfig: Update the ARM Versatile defconfig
ARM: dts: omap4-droid4: Fix emmc errors seen on some devices
ARM: dts: Fix file permission for am335x-osd3358-sm-red.dts
ARM: imx_v6_v7_defconfig: Select CONFIG_DRM_PANEL_SEIKO_43WVF1G
ARM: mxs_defconfig: Select CONFIG_DRM_PANEL_SEIKO_43WVF1G
ARM: dts: imx23-evk: Convert to the new display bindings
ARM: dts: imx23-evk: Move regulators outside simple-bus
ARM: dts: imx28-evk: Convert to the new display bindings
ARM: dts: imx28-evk: Move regulators outside simple-bus
Revert "ARM: dts: imx7d: Invert legacy PCI irq mapping"
arm: dts: am4372: setup rtc as system-power-controller
ARM: dts: omap4-droid4: fix vibrations on Droid 4
bus: ti-sysc: Fix no_console_suspend handling
bus: ti-sysc: Fix module register ioremap for larger offsets
ARM: OMAP2+: Fix module address for modules using mpu_rt_idx
ARM: OMAP2+: Fix null hwmod for ti-sysc debug
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"Speculation:
- Make the microcode check more robust
- Make the L1TF memory limit depend on the internal cache physical
address space and not on the CPUID advertised physical address
space, which might be significantly smaller. This avoids disabling
L1TF on machines which utilize the full physical address space.
- Fix the GDT mapping for EFI calls on 32bit PTI
- Fix the MCE nospec implementation to prevent #GP
Fixes and robustness:
- Use the proper operand order for LSL in the VDSO
- Prevent NMI uaccess race against CR3 switching
- Add a lockdep check to verify that text_mutex is held in
text_poke() functions
- Repair the fallout of giving native_restore_fl() a prototype
- Prevent kernel memory dumps based on usermode RIP
- Wipe KASAN shadow stack before rewinding the stack to prevent false
positives
- Move the AMS GOTO enforcement to the actual build stage to allow
user API header extraction without a compiler
- Fix a section mismatch introduced by the on demand VDSO mapping
change
Miscellaneous:
- Trivial typo, GCC quirk removal and CC_SET/OUT() cleanups"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/pti: Fix section mismatch warning/error
x86/vdso: Fix lsl operand order
x86/mce: Fix set_mce_nospec() to avoid #GP fault
x86/efi: Load fixmap GDT in efi_call_phys_epilog()
x86/nmi: Fix NMI uaccess race against CR3 switching
x86: Allow generating user-space headers without a compiler
x86/dumpstack: Don't dump kernel memory based on usermode RIP
x86/asm: Use CC_SET()/CC_OUT() in __gen_sigismember()
x86/alternatives: Lockdep-enforce text_mutex in text_poke*()
x86/entry/64: Wipe KASAN stack shadow before rewind_stack_do_exit()
x86/irqflags: Mark native_restore_fl extern inline
x86/build: Remove jump label quirk for GCC older than 4.5.2
x86/Kconfig: Fix trivial typo
x86/speculation/l1tf: Increase l1tf memory limit for Nehalem+
x86/spectre: Add missing family 6 check to microcode check
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core fixes from Thomas Gleixner:
"A small set of updates for core code:
- Prevent tracing in functions which are called from trace patching
via stop_machine() to prevent executing half patched function trace
entries.
- Remove old GCC workarounds
- Remove pointless includes of notifier.h"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Remove workaround for unreachable warnings from old GCC
notifier: Remove notifier header file wherever not used
watchdog: Mark watchdog touch functions as notrace
Randy Dunlap [Sun, 2 Sep 2018 04:01:28 +0000 (21:01 -0700)]
x86/pti: Fix section mismatch warning/error
Fix the section mismatch warning in arch/x86/mm/pti.c:
WARNING: vmlinux.o(.text+0x6972a): Section mismatch in reference from the function pti_clone_pgtable() to the function .init.text:pti_user_pagetable_walk_pte()
The function pti_clone_pgtable() references
the function __init pti_user_pagetable_walk_pte().
This is often because pti_clone_pgtable lacks a __init
annotation or the annotation of pti_user_pagetable_walk_pte is wrong.
FATAL: modpost: Section mismatches detected.
Fixes: 16c9d44cdd13 ("x86/pti: Map the vsyscall page if needed") Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andy Lutomirski <luto@kernel.org> Link: https://lkml.kernel.org/r/43a6d6a3-d69d-5eda-da09-0b1c88215a2a@infradead.org
Olof Johansson [Sun, 2 Sep 2018 01:22:19 +0000 (18:22 -0700)]
Merge tag 'omap-for-v4.19/fixes-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Fixes for omap variants against v4.19-rc1
These are mostly fixes related to using ti-sysc interconnect target module
driver for accessing right register offsets for sgx and cpsw and for
no_console_suspend regression.
There is also a droid4 emmc fix where emmc may not get detected for some
models, and vibrator dts mismerge fix.
And we have a file permission fix for am335x-osd3358-sm-red.dts that
just got added. And we must tag RTC as system-power-controller for
am437x for PMIC to shut down during poweroff.
* tag 'omap-for-v4.19/fixes-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: omap4-droid4: Fix emmc errors seen on some devices
ARM: dts: Fix file permission for am335x-osd3358-sm-red.dts
arm: dts: am4372: setup rtc as system-power-controller
ARM: dts: omap4-droid4: fix vibrations on Droid 4
bus: ti-sysc: Fix no_console_suspend handling
bus: ti-sysc: Fix module register ioremap for larger offsets
ARM: OMAP2+: Fix module address for modules using mpu_rt_idx
ARM: OMAP2+: Fix null hwmod for ti-sysc debug
Samuel Neves [Sat, 1 Sep 2018 20:14:52 +0000 (21:14 +0100)]
x86/vdso: Fix lsl operand order
In the __getcpu function, lsl is using the wrong target and destination
registers. Luckily, the compiler tends to choose %eax for both variables,
so it has been working so far.
Fixes: 6860db30a8fd ("x86/vdso: Use RDPID in preference to LSL when available") Signed-off-by: Samuel Neves <sneves@dei.uc.pt> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Andy Lutomirski <luto@kernel.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180901201452.27828-1-sneves@dei.uc.pt
Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"Two small fixes, one for the x86 Stoney SoC to get a more accurate clk
frequency and the other to fix a bad allocation in the Nuvoton NPCM7XX
driver"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: x86: Set default parent to 48Mhz
clk: npcm7xx: fix memory allocation
LuckTony [Fri, 31 Aug 2018 16:55:06 +0000 (09:55 -0700)]
x86/mce: Fix set_mce_nospec() to avoid #GP fault
The trick with flipping bit 63 to avoid loading the address of the 1:1
mapping of the poisoned page while the 1:1 map is updated used to work when
unmapping the page. But it falls down horribly when attempting to directly
set the page as uncacheable.
The problem is that when the cache mode is changed to uncachable, the pages
needs to be flushed from the cache first. But the decoy address is
non-canonical due to bit 63 flipped, and the CLFLUSH instruction throws a
#GP fault.
Add code to change_page_attr_set_clr() to fix the address before calling
flush.
Fixes: f989efbd1e3d ("x86/memory_failure: Introduce {set, clear}_mce_nospec()") Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Anvin <hpa@zytor.com> Cc: Borislav Petkov <bp@alien8.de> Cc: linux-edac <linux-edac@vger.kernel.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Jiang <dave.jiang@intel.com> Link: https://lkml.kernel.org/r/20180831165506.GA9605@agluck-desk
Linus Torvalds [Fri, 31 Aug 2018 16:20:30 +0000 (09:20 -0700)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"A few arm64 fixes came in this week, specifically fixing some nasty
truncation of return values from firmware calls and resolving a
VM_BUG_ON due to accessing uninitialised struct pages corresponding to
NOMAP pages.
Summary:
- Fix typos in SVE documentation
- Fix type-checking and implicit truncation for SMCCC calls
- Force CONFIG_HOLES_IN_ZONE=y so that SLAB doesn't fall over NOMAP
regions"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mm: always enable CONFIG_HOLES_IN_ZONE
arm/arm64: smccc-1.1: Handle function result as parameters
arm/arm64: smccc-1.1: Make return values unsigned long
Documentation/arm64/sve: Couple of improvements and typos
Joerg Roedel [Fri, 31 Aug 2018 08:05:38 +0000 (10:05 +0200)]
x86/efi: Load fixmap GDT in efi_call_phys_epilog()
When PTI is enabled on x86-32 the kernel uses the GDT mapped in the fixmap
for the simple reason that this address is also mapped for user-space.
The efi_call_phys_prolog()/efi_call_phys_epilog() wrappers change the GDT
to call EFI runtime services and switch back to the kernel GDT when they
return. But the switch-back uses the writable GDT, not the fixmap GDT.
When that happened and and the CPU returns to user-space it switches to the
user %cr3 and tries to restore user segment registers. This fails because
the writable GDT is not mapped in the user page-table, and without a GDT
the fault handlers also can't be launched. The result is a triple fault and
reboot of the machine.
Fix that by restoring the GDT back to the fixmap GDT which is also mapped
in the user page-table.
Linus Torvalds [Fri, 31 Aug 2018 15:45:16 +0000 (08:45 -0700)]
Merge tag 'for-linus-4.19b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- minor cleanup avoiding a warning when building with new gcc
- a patch to add a new sysfs node for Xen frontend/backend drivers to
make it easier to obtain the state of a pv device
- two fixes for 32-bit pv-guests to avoid intermediate L1TF vulnerable
PTEs
* tag 'for-linus-4.19b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86/xen: remove redundant variable save_pud
xen: export device state to sysfs
x86/pae: use 64 bit atomic xchg function in native_ptep_get_and_clear
x86/xen: don't write ptes directly in 32-bit PV guests
Linus Torvalds [Fri, 31 Aug 2018 15:38:53 +0000 (08:38 -0700)]
Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
- regression fixes for i801 and designware
- better API and leak fix for releasing DMA safe buffers
- better greppable strings for the bitbang algorithm
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: sh_mobile: fix leak when using DMA bounce buffer
i2c: sh_mobile: define start_ch() void as it only returns 0 anyhow
i2c: refactor function to release a DMA safe buffer
i2c: algos: bit: make the error messages grepable
i2c: designware: Re-init controllers with pm_disabled set on resume
i2c: i801: Allow ACPI AML access I/O ports not reserved for SMBus
Andy Lutomirski [Wed, 29 Aug 2018 15:47:18 +0000 (08:47 -0700)]
x86/nmi: Fix NMI uaccess race against CR3 switching
A NMI can hit in the middle of context switching or in the middle of
switch_mm_irqs_off(). In either case, CR3 might not match current->mm,
which could cause copy_from_user_nmi() and friends to read the wrong
memory.
Fix it by adding a new nmi_uaccess_okay() helper and checking it in
copy_from_user_nmi() and in __copy_from_user_nmi()'s callers.
Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Rik van Riel <riel@surriel.com> Cc: Nadav Amit <nadav.amit@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Jann Horn <jannh@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/dd956eba16646fd0b15c3c0741269dfd84452dac.1535557289.git.luto@kernel.org
Ben Hutchings [Wed, 29 Aug 2018 19:43:17 +0000 (20:43 +0100)]
x86: Allow generating user-space headers without a compiler
When bootstrapping an architecture, it's usual to generate the kernel's
user-space headers (make headers_install) before building a compiler. Move
the compiler check (for asm goto support) to the archprepare target so that
it is only done when building code for the target.
Fixes: 6b7836651e59 ("x86: Force asm-goto") Reported-by: Helmut Grohne <helmutg@debian.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180829194317.GA4765@decadent.org.uk
Jann Horn [Tue, 28 Aug 2018 15:49:01 +0000 (17:49 +0200)]
x86/dumpstack: Don't dump kernel memory based on usermode RIP
show_opcodes() is used both for dumping kernel instructions and for dumping
user instructions. If userspace causes #PF by jumping to a kernel address,
show_opcodes() can be reached with regs->ip controlled by the user,
pointing to kernel code. Make sure that userspace can't trick us into
dumping kernel memory into dmesg.
Fixes: 5bd4937f65a3 ("x86/dumpstack: Add a show_ip() function") Signed-off-by: Jann Horn <jannh@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: security@kernel.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180828154901.112726-1-jannh@google.com
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