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(parent: d836450) | patch
powerpc/8xx: Allow STRICT_KERNEL_RwX with pinned TLB
authorChristophe Leroy <christophe.leroy@csgroup.eu>
Tue, 19 May 2020 05:49:25 +0000 (05:49 +0000)
committerMichael Ellerman <mpe@ellerman.id.au>
Tue, 26 May 2020 12:22:23 +0000 (22:22 +1000)
commitbe7fa81e8aa6347fbc7f16cfc6448da88216b579
treef638ecdb345c8a2f375f7c7ff1013a1cbbaa01e1tree | snapshot
parentd8364508cf3c9114014063dafef056c56b8fd025commit | diff
powerpc/8xx: Allow STRICT_KERNEL_RwX with pinned TLB

Pinned TLB are 8M. Now that there is no strict boundary anymore
between text and RO data, it is possible to use 8M pinned executable
TLB that covers both text and RO data.

When PIN_TLB_DATA or PIN_TLB_TEXT is selected, enforce 8M RW data
alignment and allow STRICT_KERNEL_RWX.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c535fc97bf0dd8693192e25feeed8088701e00c6.1589866984.git.christophe.leroy@csgroup.eu
arch/powerpc/Kconfig diff | blob | history
arch/powerpc/mm/nohash/8xx.c diff | blob | history
arch/powerpc/platforms/8xx/Kconfig diff | blob | history
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