qemu-kvm/kvm-target-s390x-Fix-writeback-to-v1-in-helper_vstl.patch

From 95d7d0e24fa51913b41cca7c35cb75460b850ecb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>
Date: Tue, 23 May 2023 12:34:33 +0200
Subject: [PATCH 14/22] target/s390x: Fix writeback to v1 in helper_vstl
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

RH-Author: Cédric Le Goater <clg@redhat.com>
RH-MergeRequest: 279: Backport latest s390x-related fixes from upstream QEMU for qemu-kvm in RHEL 8.9
RH-Bugzilla: 2169308 2209605
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: David Hildenbrand <david@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Commit: [13/21] 9db50d12afc0a85921e6bfdb69f12ba29f3dce72

Bugzilla: https://bugzilla.redhat.com/2169308

commit db67a6ff480b346b1415b983f9582028cf8e18f0
Author: Richard Henderson <richard.henderson@linaro.org>
Date:   Thu Apr 28 11:46:56 2022 +0200

    target/s390x: Fix writeback to v1 in helper_vstl

    Fixes: 0e0a5b49ad58 ("s390x/tcg: Implement VECTOR STORE WITH LENGTH")
    Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
    Signed-off-by: David Hildenbrand <david@redhat.com>
    Tested-by: Thomas Huth <thuth@redhat.com>
    Reviewed-by: David Miller <dmiller423@gmail.com>
    Reviewed-by: David Hildenbrand <david@redhat.com>
    Message-Id: <20220428094708.84835-2-david@redhat.com>
    Signed-off-by: Thomas Huth <thuth@redhat.com>

Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
 target/s390x/tcg/vec_helper.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/target/s390x/tcg/vec_helper.c b/target/s390x/tcg/vec_helper.c
index ededf13cf0..48d86722b2 100644
--- a/target/s390x/tcg/vec_helper.c
+++ b/target/s390x/tcg/vec_helper.c
@@ -200,7 +200,6 @@ void HELPER(vstl)(CPUS390XState *env, const void *v1, uint64_t addr,
         addr = wrap_address(env, addr + 8);
         cpu_stq_data_ra(env, addr, s390_vec_read_element64(v1, 1), GETPC());
     } else {
-        S390Vector tmp = {};
         int i;
 
         for (i = 0; i < bytes; i++) {
@@ -209,6 +208,5 @@ void HELPER(vstl)(CPUS390XState *env, const void *v1, uint64_t addr,
             cpu_stb_data_ra(env, addr, byte, GETPC());
             addr = wrap_address(env, addr + 1);
         }
-        *(S390Vector *)v1 = tmp;
     }
 }
-- 
2.37.3