* [PATCH] ARCv2: Don't pretend we may set L-bit in STATUS32 with kflag instruction
@ 2018-01-18 18:07 Alexey Brodkin
0 siblings, 0 replies; only message in thread
From: Alexey Brodkin @ 2018-01-18 18:07 UTC (permalink / raw)
To: linux-snps-arc; +Cc: linux-kernel, Vineet Gupta, Alexey Brodkin
As per PRM "kflag" instruction doesn't change state of
L-flag ("Zero-Overhead loop disabled") in STATUS32 register
so let's not act as if we can affect this bit.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
---
arch/arc/include/asm/entry-arcv2.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arc/include/asm/entry-arcv2.h b/arch/arc/include/asm/entry-arcv2.h
index 257a68f3c2fe..309f4e6721b3 100644
--- a/arch/arc/include/asm/entry-arcv2.h
+++ b/arch/arc/include/asm/entry-arcv2.h
@@ -184,7 +184,7 @@
.macro FAKE_RET_FROM_EXCPN
lr r9, [status32]
bic r9, r9, (STATUS_U_MASK|STATUS_DE_MASK|STATUS_AE_MASK)
- or r9, r9, (STATUS_L_MASK|STATUS_IE_MASK)
+ or r9, r9, STATUS_IE_MASK
kflag r9
.endm
--
2.11.0
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2018-01-18 18:07 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-01-18 18:07 [PATCH] ARCv2: Don't pretend we may set L-bit in STATUS32 with kflag instruction Alexey Brodkin
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®