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powerpc/64s: scv entry should set PPR

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Kernel entry sets PPR to HMT_MEDIUM by convention. The scv entry
path missed this.

Fixes: 7fa95f9ada ("powerpc/64s: system call support for scv/rfscv instructions")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200825075309.224184-1-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2020-08-25 17:53:09 +10:00 committed by Michael Ellerman
parent aa661d7fab
commit e5fe56092e
1 changed files with 4 additions and 0 deletions
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arch/powerpc/kernel/entry_64.S
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@ -113,6 +113,10 @@ END_FTR_SECTION_IFSET(CPU_FTR_TM)
ld r11,exception_marker@toc(r2)
std r11,-16(r10) /* "regshere" marker */
BEGIN_FTR_SECTION
HMT_MEDIUM
END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
/*
* RECONCILE_IRQ_STATE without calling trace_hardirqs_off(), which
* would clobber syscall parameters. Also we always enter with IRQs