# HG changeset patch
# User Christoph Egger <Christoph.Egger@xxxxxxx>
# Date 1305187246 -3600
# Node ID 19d6541c4abec3486c83de76102ec46d7fe22a16
# Parent b6e8e916ed2827fb1329de0de2e23ee5b6b78662
nestedsvm: update rip on invlpga intercept
Fixes endless loop.
Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx>
---
diff -r b6e8e916ed28 -r 19d6541c4abe xen/arch/x86/hvm/svm/emulate.c
--- a/xen/arch/x86/hvm/svm/emulate.c Thu May 12 08:58:02 2011 +0100
+++ b/xen/arch/x86/hvm/svm/emulate.c Thu May 12 09:00:46 2011 +0100
@@ -107,6 +107,7 @@
MAKE_INSTR(VMSAVE, 3, 0x0f, 0x01, 0xdb);
MAKE_INSTR(STGI, 3, 0x0f, 0x01, 0xdc);
MAKE_INSTR(CLGI, 3, 0x0f, 0x01, 0xdd);
+MAKE_INSTR(INVLPGA,3, 0x0f, 0x01, 0xdf);
static const u8 *opc_bytes[INSTR_MAX_COUNT] =
{
@@ -126,6 +127,7 @@
[INSTR_VMSAVE] = OPCODE_VMSAVE,
[INSTR_STGI] = OPCODE_STGI,
[INSTR_CLGI] = OPCODE_CLGI,
+ [INSTR_INVLPGA] = OPCODE_INVLPGA,
};
static int fetch(struct vcpu *v, u8 *buf, unsigned long addr, int len)
diff -r b6e8e916ed28 -r 19d6541c4abe xen/arch/x86/hvm/svm/svm.c
--- a/xen/arch/x86/hvm/svm/svm.c Thu May 12 08:58:02 2011 +0100
+++ b/xen/arch/x86/hvm/svm/svm.c Thu May 12 09:00:46 2011 +0100
@@ -2061,7 +2061,10 @@
break;
case VMEXIT_INVLPGA:
+ if ( (inst_len = __get_instruction_length(v, INSTR_INVLPGA)) == 0 )
+ break;
svm_invlpga_intercept(v, regs->eax, regs->ecx);
+ __update_guest_eip(regs, inst_len);
break;
case VMEXIT_VMMCALL:
diff -r b6e8e916ed28 -r 19d6541c4abe xen/include/asm-x86/hvm/svm/emulate.h
--- a/xen/include/asm-x86/hvm/svm/emulate.h Thu May 12 08:58:02 2011 +0100
+++ b/xen/include/asm-x86/hvm/svm/emulate.h Thu May 12 09:00:46 2011 +0100
@@ -38,6 +38,7 @@
INSTR_VMSAVE,
INSTR_STGI,
INSTR_CLGI,
+ INSTR_INVLPGA,
INSTR_MAX_COUNT /* Must be last - Number of instructions supported */
};
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