From: Janosch Frank <frankja@linux.ibm.com>
To: pbonzini@redhat.com
Cc: kvm@vger.kernel.org, frankja@linux.ibm.com, david@redhat.com,
borntraeger@de.ibm.com, cohuck@redhat.com,
linux-s390@vger.kernel.org, imbrenda@linux.ibm.com,
thuth@redhat.com
Subject: [kvm-unit-tests GIT PULL 01/12] s390x: sie: Only overwrite r3 if it isn't needed anymore
Date: Tue, 22 Jun 2021 10:20:31 +0200 [thread overview]
Message-ID: <20210622082042.13831-2-frankja@linux.ibm.com> (raw)
In-Reply-To: <20210622082042.13831-1-frankja@linux.ibm.com>
The lmg overwrites r3 which we later use to reference the fprs and fpc.
Let's do the lmg at the end where overwriting is fine.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
---
s390x/cpu.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/s390x/cpu.S b/s390x/cpu.S
index e2ad56c8..82b5e25d 100644
--- a/s390x/cpu.S
+++ b/s390x/cpu.S
@@ -81,11 +81,11 @@ sie64a:
stg %r3,__SF_SIE_SAVEAREA(%r15) # save guest register save area
# Load guest's gprs, fprs and fpc
- lmg %r0,%r13,SIE_SAVEAREA_GUEST_GRS(%r3)
.irp i, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
ld \i, \i * 8 + SIE_SAVEAREA_GUEST_FPRS(%r3)
.endr
lfpc SIE_SAVEAREA_GUEST_FPC(%r3)
+ lmg %r0,%r13,SIE_SAVEAREA_GUEST_GRS(%r3)
# Move scb ptr into r14 for the sie instruction
lg %r14,__SF_SIE_CONTROL(%r15)
--
2.31.1
next prev parent reply other threads:[~2021-06-22 8:21 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-22 8:20 [kvm-unit-tests GIT PULL 00/12] s390x update 2021-22-06 Janosch Frank
2021-06-22 8:20 ` Janosch Frank [this message]
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 02/12] s390x: selftest: Add prefixes to fix report output Janosch Frank
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 03/12] s390x: Don't run PV testcases under tcg Janosch Frank
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 04/12] configure: s390x: Check if the host key document exists Janosch Frank
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 05/12] s390x: run: Skip PV tests when tcg is the accelerator Janosch Frank
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 06/12] s390x: lib: add and use macros for control register bits Janosch Frank
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 07/12] libcflat: add SZ_1M and SZ_2G Janosch Frank
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 08/12] s390x: lib: fix pgtable.h Janosch Frank
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 09/12] s390x: lib: Add idte and other huge pages functions/macros Janosch Frank
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 10/12] s390x: lib: add teid union and clear teid from lowcore Janosch Frank
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 11/12] s390x: mmu: add support for large pages Janosch Frank
2021-06-22 8:20 ` [kvm-unit-tests GIT PULL 12/12] s390x: edat test Janosch Frank
2021-06-22 8:24 ` [kvm-unit-tests GIT PULL 00/12] s390x update 2021-22-06 Paolo Bonzini
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