diff options
Diffstat (limited to '0023-x86emul-set-fake-operand-size-for-AVX512CD-broadcast.patch')
| -rw-r--r-- | 0023-x86emul-set-fake-operand-size-for-AVX512CD-broadcast.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/0023-x86emul-set-fake-operand-size-for-AVX512CD-broadcast.patch b/0023-x86emul-set-fake-operand-size-for-AVX512CD-broadcast.patch new file mode 100644 index 0000000..d94f56e --- /dev/null +++ b/0023-x86emul-set-fake-operand-size-for-AVX512CD-broadcast.patch @@ -0,0 +1,35 @@ +From a0d6b75b832d2f7c54429de1a550fe122bcd6881 Mon Sep 17 00:00:00 2001 +From: Jan Beulich <jbeulich@suse.com> +Date: Tue, 24 Sep 2024 14:37:52 +0200 +Subject: [PATCH 23/35] x86emul: set (fake) operand size for AVX512CD broadcast + insns + +Back at the time I failed to pay attention to op_bytes still being zero +when reaching the respective case block: With the ext0f38_table[] +entries having simd_packed_int, the defaulting at the bottom of +x86emul_decode() won't set the field to non-zero for F3-prefixed insns. + +Fixes: 37ccca740c26 ("x86emul: support AVX512CD insns") +Signed-off-by: Jan Beulich <jbeulich@suse.com> +Acked-by: Andrew Cooper <andrew.cooper3@citrix.com> +master commit: 6fa6b7feaafd622db3a2f3436750cf07782f4c12 +master date: 2024-08-23 09:12:24 +0200 +--- + xen/arch/x86/x86_emulate/x86_emulate.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/xen/arch/x86/x86_emulate/x86_emulate.c b/xen/arch/x86/x86_emulate/x86_emulate.c +index 4d9649a2af..305f4286bf 100644 +--- a/xen/arch/x86/x86_emulate/x86_emulate.c ++++ b/xen/arch/x86/x86_emulate/x86_emulate.c +@@ -5928,6 +5928,7 @@ x86_emulate( + evex.w == ((b >> 4) & 1)), + X86_EXC_UD); + d |= TwoOp; ++ op_bytes = 1; /* fake */ + /* fall through */ + case X86EMUL_OPC_EVEX_66(0x0f38, 0xc4): /* vpconflict{d,q} [xyz]mm/mem,[xyz]mm{k} */ + fault_suppression = false; +-- +2.46.1 + |