From: Jan Beulich <jbeulich@suse.com>
Date: Wed, 5 Aug 2020 08:29:18 +0000 (+0200)
Subject: x86emul: AVX512PF insns aren't memory accesses
X-Git-Tag: 4.15.0-rc1~937
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=96137cf1426a1d6419ec9fd205e22b03b2af313d;p=people%2Fjgross%2Fxen.git

x86emul: AVX512PF insns aren't memory accesses

These are prefetches, so should be treated just like other prefetches.

Fixes: 467e91bde720 ("x86emul: support AVX512PF insns")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
---

diff --git a/xen/arch/x86/x86_emulate/x86_emulate.c b/xen/arch/x86/x86_emulate/x86_emulate.c
index c54ad589c4..41883ad6d8 100644
--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -12266,6 +12266,8 @@ x86_insn_is_mem_access(const struct x86_emulate_state *state,
          ... X86EMUL_OPC_F2(0x0f, 0x1f): /* NOP space */
         case X86EMUL_OPC(0x0f, 0xb9): /* UD1 */
         case X86EMUL_OPC(0x0f, 0xff): /* UD0 */
+        case X86EMUL_OPC_EVEX_66(0x0f38, 0xc6): /* V{GATH,SCATT}ERPF*D* */
+        case X86EMUL_OPC_EVEX_66(0x0f38, 0xc7): /* V{GATH,SCATT}ERPF*Q* */
             return false;
 
         case X86EMUL_OPC(0x0f, 0x01):