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| author | Benjamin Gray <bgray@linux.ibm.com> | 2024-04-17 14:23:18 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-05-03 13:46:51 +0300 |
| commit | 75171f06c4507c3b6b5a69d793879fb20d108bb1 (patch) | |
| tree | 82a5db6c1f962cb180135e9cec442e812ffbe028 /arch/powerpc/include | |
| parent | d7228a58d9438d6f219dc7f33eab0d1980b3bd2f (diff) | |
| download | linux-75171f06c4507c3b6b5a69d793879fb20d108bb1.tar.xz | |
powerpc/dexcr: Track the DEXCR per-process
Add capability to make the DEXCR act as a per-process SPR.
We do not yet have an interface for changing the values per task. We
also expect the kernel to use a single DEXCR value across all tasks
while in privileged state, so there is no need to synchronize after
changing it (the userspace aspects will synchronize upon returning to
userspace).
Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240417112325.728010-3-bgray@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index b2c51d337e60..882e31296ea6 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -260,6 +260,7 @@ struct thread_struct { unsigned long sier2; unsigned long sier3; unsigned long hashkeyr; + unsigned long dexcr; #endif }; |