* [PATCH] powerpc/64s: scv entry should set PPR
@ 2020-08-25 7:53 Nicholas Piggin
2020-08-27 7:46 ` Michael Ellerman
0 siblings, 1 reply; 2+ messages in thread
From: Nicholas Piggin @ 2020-08-25 7:53 UTC (permalink / raw)
To: linuxppc-dev; +Cc: Nicholas Piggin
Kernel entry sets PPR to HMT_MEDIUM by convention. The scv entry
path missed this.
Fixes: 7fa95f9adaee ("powerpc/64s: system call support for scv/rfscv instructions")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/kernel/entry_64.S | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 33a42e42c56f..733e40eba4eb 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -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
--
2.23.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] powerpc/64s: scv entry should set PPR
2020-08-25 7:53 [PATCH] powerpc/64s: scv entry should set PPR Nicholas Piggin
@ 2020-08-27 7:46 ` Michael Ellerman
0 siblings, 0 replies; 2+ messages in thread
From: Michael Ellerman @ 2020-08-27 7:46 UTC (permalink / raw)
To: linuxppc-dev, Nicholas Piggin
On Tue, 25 Aug 2020 17:53:09 +1000, Nicholas Piggin wrote:
> Kernel entry sets PPR to HMT_MEDIUM by convention. The scv entry
> path missed this.
Applied to powerpc/fixes.
[1/1] powerpc/64s: scv entry should set PPR
https://git.kernel.org/powerpc/c/e5fe56092e753c50093c60e757561984abff335e
cheers
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