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KVM: SVM: Add intercept checks for descriptor table accesses

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This patch add intercept checks into the KVM instruction
emulator to check for the 8 instructions that access the
descriptor table addresses.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel
2011-04-04 12:39:30 +02:00
committed by Avi Kivity
parent 3b88e41a41
commit dee6bb70e4
2 changed files with 20 additions and 2 deletions
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14
arch/x86/kvm/emulate.c
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@@ -2630,8 +2630,18 @@ static struct opcode group5[] = {
D(SrcMem | ModRM | Stack), N,
};
static struct opcode group6[] = {
DI(ModRM | Prot, sldt),
DI(ModRM | Prot, str),
DI(ModRM | Prot | Priv, lldt),
DI(ModRM | Prot | Priv, ltr),
N, N, N, N,
};
static struct group_dual group7 = { {
N, N, DI(ModRM | SrcMem | Priv, lgdt), DI(ModRM | SrcMem | Priv, lidt),
DI(ModRM | Mov | DstMem | Priv, sgdt),
DI(ModRM | Mov | DstMem | Priv, sidt),
DI(ModRM | SrcMem | Priv, lgdt), DI(ModRM | SrcMem | Priv, lidt),
DI(SrcNone | ModRM | DstMem | Mov, smsw), N,
DI(SrcMem16 | ModRM | Mov | Priv, lmsw),
DI(SrcMem | ModRM | ByteOp | Priv | NoAccess, invlpg),
@@ -2766,7 +2776,7 @@ static struct opcode opcode_table[256] = {
static struct opcode twobyte_table[256] = {
/* 0x00 - 0x0F */
N, GD(0, &group7), N, N,
G(0, group6), GD(0, &group7), N, N,
N, D(ImplicitOps | VendorSpecific), DI(ImplicitOps | Priv, clts), N,
DI(ImplicitOps | Priv, invd), DI(ImplicitOps | Priv, wbinvd), N, N,
N, D(ImplicitOps | ModRM), N, N,