Pull parisc fixes from Helge Deller:
"Some interesting background to the current patchset:
It turned out that the fldw instruction (which loads a 32-bit word
from memory into one half of a FP register) failed on unaligned
addresses and even trashed some other random FP register instead. It's
a trivial one-liner fix in the exception handler but this failure
dates back to the very beginnings of the parisc-port. It's strange
that it was never noticed before.
Another patch fixes an annoyance noticed by Randy Dunlap. Running
"make ARCH=parisc64 randconfig" always returned a 32-bit config,
although one would expect a 64-bit config. Masahiro Yamada suggested
to mimik sparc Kconfig code, which fixed the issue nicely. This
allowed to drop some compiler build checks too.
Third, it's possible to build an optimized 32-bit kernel for PA8X00
(64-bit) CPUs, which then wouldn't start on 32-bit-only (PA1.x)
machines. I've added a bootup check which prevents that and which
prints a message to the console. This can be tested with qemu, which
currently only supports 32-bit emulation.
The other patches are usual clean-up stuff like added return value
checks and typo fixes in comments.
Summary:
- Fix emulation of fldw instruction on unaligned addresses
- Fix "make ARCH=parisc64 randconfig" to return a 64-bit config
- Prevent boot if trying to boot a 32-bit kernel compiled for PA8X00
CPUs on 32-bit only machines
- ccio-dma: Handle kmalloc failure in ccio_init_resources()"
* tag 'parisc-for-6.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Add runtime check to prevent PA2.0 kernels on PA1.x machines
parisc: ccio-dma: Handle kmalloc failure in ccio_init_resources()
parisc: led: Move from strlcpy with unused retval to strscpy
parisc: ccio-dma: Fix typo in comment
Revert "parisc: Show error if wrong 32/64-bit compiler is being used"
parisc: Make CONFIG_64BIT available for ARCH=parisc64 only
parisc: Fix exception handler for fldw and fstw instructions
projects / kernel.git / commitdiff