From: Nico Boehr <nrb@linux.ibm.com>
To: thuth@redhat.com, pbonzini@redhat.com, andrew.jones@linux.dev
Cc: kvm@vger.kernel.org, frankja@linux.ibm.com, imbrenda@linux.ibm.com
Subject: [kvm-unit-tests GIT PULL 05/13] s390x: mvpg: Dirty CC before mvpg execution
Date: Wed, 24 Apr 2024 12:59:24 +0200 [thread overview]
Message-ID: <20240424105935.184138-6-nrb@linux.ibm.com> (raw)
In-Reply-To: <20240424105935.184138-1-nrb@linux.ibm.com>
From: Janosch Frank <frankja@linux.ibm.com>
Dirtying the CC allows us to find missing CC changes when mvpg is
emulated.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Link: https://lore.kernel.org/r/20240131074427.70871-5-frankja@linux.ibm.com
Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
---
s390x/mvpg.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/s390x/mvpg.c b/s390x/mvpg.c
index 296338d4..62d42e36 100644
--- a/s390x/mvpg.c
+++ b/s390x/mvpg.c
@@ -40,12 +40,14 @@ static uint8_t *fresh;
static inline int mvpg(unsigned long r0, void *dest, void *src)
{
register unsigned long reg0 asm ("0") = r0;
+ uint64_t bogus_cc = 3;
int cc;
- asm volatile(" mvpg %1,%2\n"
+ asm volatile(" tmll %[bogus_cc],3\n"
+ " mvpg %1,%2\n"
" ipm %0\n"
" srl %0,28"
- : "=&d" (cc) : "a" (dest), "a" (src), "d" (reg0)
+ : "=&d" (cc) : "a" (dest), "a" (src), "d" (reg0), [bogus_cc] "d" (bogus_cc)
: "memory", "cc");
return cc;
}
--
2.44.0
next prev parent reply other threads:[~2024-04-24 10:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-24 10:59 [kvm-unit-tests GIT PULL 00/13] s390x: Improvement of CMM test, lot of small bugfixes and two refactorings Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 01/13] s390x/Makefile: simplify Secure Execution boot image generation Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 02/13] lib: s390x: sigp: Dirty CC before sigp execution Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 03/13] lib: s390x: uv: Dirty CC before uvc execution Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 04/13] lib: s390x: css: Dirty CC before css instructions Nico Boehr
2024-04-24 10:59 ` Nico Boehr [this message]
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 06/13] s390x: sclp: Dirty CC before sclp execution Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 07/13] lib: s390x: sigp: Name inline assembly arguments Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 08/13] s390x: add pv-attest to unittests.cfg Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 09/13] s390x: emulator: Fix error path of invalid function code Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 10/13] s390x: Fix is_pv check in run script Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 11/13] s390x: Use local accel variable in arch_cmd_s390x Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 12/13] lib: s390: fix guest length in uv_create_guest() Nico Boehr
2024-04-24 10:59 ` [kvm-unit-tests GIT PULL 13/13] s390x: cmm: test no-translate bit after reset Nico Boehr
2024-04-24 11:32 ` [kvm-unit-tests GIT PULL 00/13] s390x: Improvement of CMM test, lot of small bugfixes and two refactorings Thomas Huth
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