Commit 27ce8258 authored Mar 15, 2014 by Igor Mammedov Committed by Paolo Bonzini Mar 17, 2014

KVM: x86 emulator: emulate MOVAPS



HCK memory driver test fails when testing 32-bit Windows 8.1
with baloon driver.

tracing KVM shows error:
reason EXIT_ERR rip 0x81c18326 info 0 0

x/10i 0x81c18326-20
0x0000000081c18312:  add    %al,(%eax)
0x0000000081c18314:  add    %cl,-0x7127711d(%esi)
0x0000000081c1831a:  rolb   $0x0,0x80ec(%ecx)
0x0000000081c18321:  and    $0xfffffff0,%esp
0x0000000081c18324:  mov    %esp,%esi
0x0000000081c18326:  movaps %xmm0,(%esi)
0x0000000081c18329:  movaps %xmm1,0x10(%esi)
0x0000000081c1832d:  movaps %xmm2,0x20(%esi)
0x0000000081c18331:  movaps %xmm3,0x30(%esi)
0x0000000081c18335:  movaps %xmm4,0x40(%esi)

which points to MOVAPS instruction currently no emulated by KVM.
Fix it by adding appropriate entries to opcode table in KVM's emulator.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 8fbb1daf

arch/x86/kvm/emulate.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -3668,6 +3668,10 @@ static const struct gprefix pfx_vmovntpx = {
		I(0, em_mov), N, N, N,
		};

		static const struct gprefix pfx_0f_28_0f_29 = {
		I(Aligned, em_mov), N, N, N,
		};

		static const struct escape escape_d9 = { {
		N, N, N, N, N, N, N, I(DstMem, em_fnstcw),
		}, {
		@@ -3870,7 +3874,9 @@ static const struct opcode twobyte_table[256] = {
		IIP(ModRM \| SrcMem \| Priv \| Op3264, em_cr_write, cr_write, check_cr_write),
		IIP(ModRM \| SrcMem \| Priv \| Op3264, em_dr_write, dr_write, check_dr_write),
		N, N, N, N,
		N, N, N, GP(ModRM \| DstMem \| SrcReg \| Sse \| Mov \| Aligned, &pfx_vmovntpx),
		GP(ModRM \| DstReg \| SrcMem \| Mov \| Sse, &pfx_0f_28_0f_29),
		GP(ModRM \| DstMem \| SrcReg \| Mov \| Sse, &pfx_0f_28_0f_29),
		N, GP(ModRM \| DstMem \| SrcReg \| Sse \| Mov \| Aligned, &pfx_vmovntpx),
		N, N, N, N,
		/* 0x30 - 0x3F */
		II(ImplicitOps \| Priv, em_wrmsr, wrmsr),

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