From: Qing He <qing.he@intel.com>
Date: Mon, 24 Sep 2007 09:22:13 +0000 (+0800)
Subject: KVM: x86_emulator: no writeback for bt
X-Git-Tag: firefly_0821_release~23631^2~234
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e4f8e03956de4b1a1dc4bbbdefa9c973d01ee91f;p=firefly-linux-kernel-4.4.55.git

KVM: x86_emulator: no writeback for bt

Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 6161e3f66585..0afe660aec4b 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -1629,6 +1629,7 @@ twobyte_insn:
 		break;
 	case 0xa3:
 	      bt:		/* bt */
+		c->dst.type = OP_NONE;
 		/* only subword offset */
 		c->src.val &= (c->dst.bytes << 3) - 1;
 		emulate_2op_SrcV_nobyte("bt", c->src, c->dst, ctxt->eflags);