powerpc/32: Remove verification of MSR_PR on syscall in the ASM entry

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system_call_exception() checks MSR_PR and BUGs if a syscall
is issued from kernel mode.

No need to handle it anymore from the ASM entry code.

null_syscall reduction 2 cycles (348 => 346 cycles)

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1eddb42cb12092b1e3d72608d182c365db3da41d.1612796617.git.christophe.leroy@csgroup.eu

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Christophe Leroy 2021-02-08 15:10:34 +00:00 • committed by Michael Ellerman

parent 6f76a01173

commit 4d67facbcb

3 changed files with 0 additions and 36 deletions

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30

arch/powerpc/kernel/entry_32.S

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3

arch/powerpc/kernel/head_32.h

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3

arch/powerpc/kernel/head_booke.h

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