qemu-kvm/kvm-target-s390x-Fix-cc_calc_sla_64-missing-overflows.patch

58 lines
2.1 KiB
Diff
Raw Normal View History

From 300a84c83fc6f112bed7e488f0e64eb6c07d47bf Mon Sep 17 00:00:00 2001
* Wed May 24 2023 Jon Maloy <jmaloy@redhat.com> - 6.2.0-35 - kvm-virtiofsd-Add-basic-support-for-FUSE_SYNCFS-request.patch [bz#2196880] - kvm-s390-kvm-adjust-diag318-resets-to-retain-data.patch [bz#2169308] - kvm-target-s390x-Fix-SLDA-sign-bit-index.patch [bz#2169308] - kvm-target-s390x-Fix-SRDA-CC-calculation.patch [bz#2169308] - kvm-target-s390x-Fix-cc_calc_sla_64-missing-overflows.patch [bz#2169308] - kvm-target-s390x-Fix-shifting-32-bit-values-for-more-tha.patch [bz#2169308] - kvm-s390x-sigp-Reorder-the-SIGP-STOP-code.patch [bz#2169308] - kvm-s390x-tcg-Fix-BRASL-with-a-large-negative-offset.patch [bz#2169308] - kvm-s390x-tcg-Fix-BRCL-with-a-large-negative-offset.patch [bz#2169308] - kvm-target-s390x-Fix-determination-of-overflow-condition.patch [bz#2169308] - kvm-target-s390x-Fix-determination-of-overflow-conditioo.patch [bz#2169308] - kvm-s390x-follow-qdev-tree-to-detect-SCSI-device-on-a-CC.patch [bz#2169308] - kvm-target-s390x-Fix-the-accumulation-of-ccm-in-op_icm.patch [bz#2169308] - kvm-target-s390x-Fix-writeback-to-v1-in-helper_vstl.patch [bz#2169308] - kvm-target-s390x-fix-handling-of-zeroes-in-vfmin-vfmax.patch [bz#2169308] - kvm-target-s390x-Fix-CLFIT-and-CLGIT-immediate-size.patch [bz#2169308] - kvm-s390x-tcg-Fix-opcode-for-lzrf.patch [bz#2169308] - kvm-target-s390x-Fix-emulation-of-the-VISTR-instruction.patch [bz#2169308] - kvm-s390x-css-revert-SCSW-ctrl-flag-bits-on-error.patch [bz#2169308] - kvm-target-s390x-tcg-Fix-and-improve-the-SACF-instructio.patch [bz#2169308] - kvm-target-s390x-tcg-mem_helper-Test-the-right-bits-in-p.patch [bz#2169308] - Resolves: bz#2196880 ([virtiofs] Backport FUSE_SYNCFS support) - Resolves: bz#2169308 (Backport latest s390x-related fixes from upstream QEMU for qemu-kvm in RHEL 8.9)
2023-05-24 18:04:22 +00:00
From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>
Date: Tue, 23 May 2023 12:34:33 +0200
Subject: [PATCH 05/22] target/s390x: Fix cc_calc_sla_64() missing overflows
* Wed May 24 2023 Jon Maloy <jmaloy@redhat.com> - 6.2.0-35 - kvm-virtiofsd-Add-basic-support-for-FUSE_SYNCFS-request.patch [bz#2196880] - kvm-s390-kvm-adjust-diag318-resets-to-retain-data.patch [bz#2169308] - kvm-target-s390x-Fix-SLDA-sign-bit-index.patch [bz#2169308] - kvm-target-s390x-Fix-SRDA-CC-calculation.patch [bz#2169308] - kvm-target-s390x-Fix-cc_calc_sla_64-missing-overflows.patch [bz#2169308] - kvm-target-s390x-Fix-shifting-32-bit-values-for-more-tha.patch [bz#2169308] - kvm-s390x-sigp-Reorder-the-SIGP-STOP-code.patch [bz#2169308] - kvm-s390x-tcg-Fix-BRASL-with-a-large-negative-offset.patch [bz#2169308] - kvm-s390x-tcg-Fix-BRCL-with-a-large-negative-offset.patch [bz#2169308] - kvm-target-s390x-Fix-determination-of-overflow-condition.patch [bz#2169308] - kvm-target-s390x-Fix-determination-of-overflow-conditioo.patch [bz#2169308] - kvm-s390x-follow-qdev-tree-to-detect-SCSI-device-on-a-CC.patch [bz#2169308] - kvm-target-s390x-Fix-the-accumulation-of-ccm-in-op_icm.patch [bz#2169308] - kvm-target-s390x-Fix-writeback-to-v1-in-helper_vstl.patch [bz#2169308] - kvm-target-s390x-fix-handling-of-zeroes-in-vfmin-vfmax.patch [bz#2169308] - kvm-target-s390x-Fix-CLFIT-and-CLGIT-immediate-size.patch [bz#2169308] - kvm-s390x-tcg-Fix-opcode-for-lzrf.patch [bz#2169308] - kvm-target-s390x-Fix-emulation-of-the-VISTR-instruction.patch [bz#2169308] - kvm-s390x-css-revert-SCSW-ctrl-flag-bits-on-error.patch [bz#2169308] - kvm-target-s390x-tcg-Fix-and-improve-the-SACF-instructio.patch [bz#2169308] - kvm-target-s390x-tcg-mem_helper-Test-the-right-bits-in-p.patch [bz#2169308] - Resolves: bz#2196880 ([virtiofs] Backport FUSE_SYNCFS support) - Resolves: bz#2169308 (Backport latest s390x-related fixes from upstream QEMU for qemu-kvm in RHEL 8.9)
2023-05-24 18:04:22 +00:00
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
* Wed May 24 2023 Jon Maloy <jmaloy@redhat.com> - 6.2.0-35 - kvm-virtiofsd-Add-basic-support-for-FUSE_SYNCFS-request.patch [bz#2196880] - kvm-s390-kvm-adjust-diag318-resets-to-retain-data.patch [bz#2169308] - kvm-target-s390x-Fix-SLDA-sign-bit-index.patch [bz#2169308] - kvm-target-s390x-Fix-SRDA-CC-calculation.patch [bz#2169308] - kvm-target-s390x-Fix-cc_calc_sla_64-missing-overflows.patch [bz#2169308] - kvm-target-s390x-Fix-shifting-32-bit-values-for-more-tha.patch [bz#2169308] - kvm-s390x-sigp-Reorder-the-SIGP-STOP-code.patch [bz#2169308] - kvm-s390x-tcg-Fix-BRASL-with-a-large-negative-offset.patch [bz#2169308] - kvm-s390x-tcg-Fix-BRCL-with-a-large-negative-offset.patch [bz#2169308] - kvm-target-s390x-Fix-determination-of-overflow-condition.patch [bz#2169308] - kvm-target-s390x-Fix-determination-of-overflow-conditioo.patch [bz#2169308] - kvm-s390x-follow-qdev-tree-to-detect-SCSI-device-on-a-CC.patch [bz#2169308] - kvm-target-s390x-Fix-the-accumulation-of-ccm-in-op_icm.patch [bz#2169308] - kvm-target-s390x-Fix-writeback-to-v1-in-helper_vstl.patch [bz#2169308] - kvm-target-s390x-fix-handling-of-zeroes-in-vfmin-vfmax.patch [bz#2169308] - kvm-target-s390x-Fix-CLFIT-and-CLGIT-immediate-size.patch [bz#2169308] - kvm-s390x-tcg-Fix-opcode-for-lzrf.patch [bz#2169308] - kvm-target-s390x-Fix-emulation-of-the-VISTR-instruction.patch [bz#2169308] - kvm-s390x-css-revert-SCSW-ctrl-flag-bits-on-error.patch [bz#2169308] - kvm-target-s390x-tcg-Fix-and-improve-the-SACF-instructio.patch [bz#2169308] - kvm-target-s390x-tcg-mem_helper-Test-the-right-bits-in-p.patch [bz#2169308] - Resolves: bz#2196880 ([virtiofs] Backport FUSE_SYNCFS support) - Resolves: bz#2169308 (Backport latest s390x-related fixes from upstream QEMU for qemu-kvm in RHEL 8.9)
2023-05-24 18:04:22 +00:00
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: [4/21] 2f91de2ac980d6ffa4da0ec41bb30562624a2396
* Wed May 24 2023 Jon Maloy <jmaloy@redhat.com> - 6.2.0-35 - kvm-virtiofsd-Add-basic-support-for-FUSE_SYNCFS-request.patch [bz#2196880] - kvm-s390-kvm-adjust-diag318-resets-to-retain-data.patch [bz#2169308] - kvm-target-s390x-Fix-SLDA-sign-bit-index.patch [bz#2169308] - kvm-target-s390x-Fix-SRDA-CC-calculation.patch [bz#2169308] - kvm-target-s390x-Fix-cc_calc_sla_64-missing-overflows.patch [bz#2169308] - kvm-target-s390x-Fix-shifting-32-bit-values-for-more-tha.patch [bz#2169308] - kvm-s390x-sigp-Reorder-the-SIGP-STOP-code.patch [bz#2169308] - kvm-s390x-tcg-Fix-BRASL-with-a-large-negative-offset.patch [bz#2169308] - kvm-s390x-tcg-Fix-BRCL-with-a-large-negative-offset.patch [bz#2169308] - kvm-target-s390x-Fix-determination-of-overflow-condition.patch [bz#2169308] - kvm-target-s390x-Fix-determination-of-overflow-conditioo.patch [bz#2169308] - kvm-s390x-follow-qdev-tree-to-detect-SCSI-device-on-a-CC.patch [bz#2169308] - kvm-target-s390x-Fix-the-accumulation-of-ccm-in-op_icm.patch [bz#2169308] - kvm-target-s390x-Fix-writeback-to-v1-in-helper_vstl.patch [bz#2169308] - kvm-target-s390x-fix-handling-of-zeroes-in-vfmin-vfmax.patch [bz#2169308] - kvm-target-s390x-Fix-CLFIT-and-CLGIT-immediate-size.patch [bz#2169308] - kvm-s390x-tcg-Fix-opcode-for-lzrf.patch [bz#2169308] - kvm-target-s390x-Fix-emulation-of-the-VISTR-instruction.patch [bz#2169308] - kvm-s390x-css-revert-SCSW-ctrl-flag-bits-on-error.patch [bz#2169308] - kvm-target-s390x-tcg-Fix-and-improve-the-SACF-instructio.patch [bz#2169308] - kvm-target-s390x-tcg-mem_helper-Test-the-right-bits-in-p.patch [bz#2169308] - Resolves: bz#2196880 ([virtiofs] Backport FUSE_SYNCFS support) - Resolves: bz#2169308 (Backport latest s390x-related fixes from upstream QEMU for qemu-kvm in RHEL 8.9)
2023-05-24 18:04:22 +00:00
Bugzilla: https://bugzilla.redhat.com/2169308
commit df103c09bc2f549d36ba6313a69c18fc003ef1ee
Author: Ilya Leoshkevich <iii@linux.ibm.com>
Date: Wed Jan 12 17:50:14 2022 +0100
target/s390x: Fix cc_calc_sla_64() missing overflows
An overflow occurs for SLAG when at least one shifted bit is not equal
to sign bit. Therefore, we need to check that `shift + 1` bits are
neither all 0s nor all 1s. The current code checks only `shift` bits,
missing some overflows.
Fixes: cbe24bfa91d2 ("target-s390: Convert SHIFT, ROTATE SINGLE")
Co-developed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20220112165016.226996-4-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
target/s390x/tcg/cc_helper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/s390x/tcg/cc_helper.c b/target/s390x/tcg/cc_helper.c
index c2c96c3a3c..c9b7b0e8c6 100644
--- a/target/s390x/tcg/cc_helper.c
+++ b/target/s390x/tcg/cc_helper.c
@@ -297,7 +297,7 @@ static uint32_t cc_calc_sla_32(uint32_t src, int shift)
static uint32_t cc_calc_sla_64(uint64_t src, int shift)
{
- uint64_t mask = ((1ULL << shift) - 1ULL) << (64 - shift);
+ uint64_t mask = -1ULL << (63 - shift);
uint64_t sign = 1ULL << 63;
uint64_t match;
int64_t r;
--
2.37.3