From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org
Subject: [PATCH 2/5] KVM: x86 emulator: emulate LLDT
Date: Wed, 27 Jun 2012 18:19:02 +0300 [thread overview]
Message-ID: <1340810369-25392-5-git-send-email-avi@redhat.com> (raw)
In-Reply-To: <1340810369-25392-1-git-send-email-avi@redhat.com>
Opcode 0F 00 /2. Used by isolinux durign the protected mode transition.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/emulate.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 4eea1e4..85f7a5f 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -3006,6 +3006,15 @@ static int em_mov_sreg_rm(struct x86_emulate_ctxt *ctxt)
return load_segment_descriptor(ctxt, sel, ctxt->modrm_reg);
}
+static int em_lldt(struct x86_emulate_ctxt *ctxt)
+{
+ u16 sel = ctxt->src.val;
+
+ /* Disable writeback. */
+ ctxt->dst.type = OP_NONE;
+ return load_segment_descriptor(ctxt, sel, VCPU_SREG_LDTR);
+}
+
static int em_invlpg(struct x86_emulate_ctxt *ctxt)
{
int rc;
@@ -3551,7 +3560,7 @@ static int check_perm_out(struct x86_emulate_ctxt *ctxt)
static struct opcode group6[] = {
DI(Prot, sldt),
DI(Prot, str),
- DI(Prot | Priv, lldt),
+ II(Prot | Priv | SrcMem16, em_lldt, lldt),
DI(Prot | Priv, ltr),
N, N, N, N,
};
--
1.7.10.1
next prev parent reply other threads:[~2012-06-27 15:19 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-27 15:18 [PATCH v2 00/26] Big big real mode improvements Avi Kivity
2012-06-27 15:18 ` [PATCH v2 01/26] KVM: VMX: Return correct CPL during transition to protected mode Avi Kivity
2012-06-27 15:19 ` [PATCH 1/5] KVM: x86 emulator: emulate BSWAP Avi Kivity
2012-06-27 15:19 ` [PATCH v2 02/26] KVM: Split cpuid register access from computation Avi Kivity
2012-06-27 15:19 ` Avi Kivity [this message]
2012-06-27 15:19 ` [PATCH v2 03/26] KVM: x86 emulator: change ->get_cpuid() accessor to use the x86 semantics Avi Kivity
2012-06-27 15:19 ` [PATCH 3/5] KVM: x86 emulator: make read_segment_descriptor() return the address Avi Kivity
2012-06-27 15:19 ` [PATCH v2 04/26] KVM: x86 emulator: emulate cpuid Avi Kivity
2012-06-27 15:19 ` [PATCH 4/5] KVM: x86 emulator: make loading TR set the busy bit Avi Kivity
2012-06-27 15:19 ` [PATCH v2 05/26] KVM: x86 emulator: allow loading null SS in long mode Avi Kivity
2012-06-27 15:19 ` [PATCH 5/5] KVM: x86 emulator: implement LTR Avi Kivity
2012-06-27 15:19 ` [PATCH v2 06/26] KVM: x86 emulator: fix LIDT/LGDT in long mode Avi Kivity
2012-06-27 15:19 ` [PATCH v2 07/26] KVM: VMX: Relax check on unusable segment Avi Kivity
2012-06-27 15:19 ` [PATCH v2 08/26] KVM: VMX: Limit iterations with emulator_invalid_guest_state Avi Kivity
2012-06-27 15:19 ` [PATCH v2 09/26] KVM: x86 emulator: emulate LEAVE Avi Kivity
2012-06-27 15:19 ` [PATCH v2 10/26] KVM: x86 emulator: initialize memop Avi Kivity
2012-06-27 15:19 ` [PATCH v2 11/26] KVM: Fix SS default ESP/EBP based addressing Avi Kivity
2012-06-27 15:19 ` [PATCH v2 12/26] KVM: x86 emulator: emulate SGDT/SIDT Avi Kivity
2012-06-27 15:19 ` [PATCH v2 13/26] KVM: VMX: Fix interrupt exit condition during emulation Avi Kivity
2012-06-27 15:19 ` [PATCH v2 14/26] KVM: VMX: Continue emulating after batch exhausted Avi Kivity
2012-06-27 15:19 ` [PATCH v2 15/26] KVM: x86 emulator: emulate LAHF Avi Kivity
2012-06-27 15:19 ` [PATCH v2 16/26] KVM: x86 emulator: fix byte-sized MOVZX/MOVSX Avi Kivity
2012-06-27 15:19 ` [PATCH v2 17/26] KVM: x86 emulator: split push logic from push opcode emulation Avi Kivity
2012-06-27 15:19 ` [PATCH v2 18/26] KVM: x86 emulator: implement ENTER Avi Kivity
2012-06-27 15:19 ` [PATCH v2 19/26] KVM: VMX: Stop invalid guest state emulation on pending event Avi Kivity
2012-06-27 15:19 ` [PATCH v2 20/26] KVM: VMX: Improve error reporting during invalid guest state emulation Avi Kivity
2012-06-27 15:19 ` [PATCH v2 21/26] KVM: x86 emulator: emulate BSWAP Avi Kivity
2012-06-27 15:19 ` [PATCH v2 22/26] KVM: x86 emulator: emulate LLDT Avi Kivity
2012-06-27 15:19 ` [PATCH v2 23/26] KVM: x86 emulator: make read_segment_descriptor() return the address Avi Kivity
2012-06-27 15:19 ` [PATCH v2 24/26] KVM: x86 emulator: make loading TR set the busy bit Avi Kivity
2012-06-27 15:19 ` [PATCH v2 25/26] KVM: x86 emulator: implement LTR Avi Kivity
2012-06-27 15:19 ` [PATCH v2 26/26] KVM: VMX: Emulate invalid guest state by default Avi Kivity
2012-06-27 15:23 ` [PATCH v2 00/26] Big big real mode improvements Avi Kivity
-- strict thread matches above, loose matches on Subject: below --
2012-06-13 14:30 [PATCH 0/5] Big real mode - addendum Avi Kivity
2012-06-13 14:30 ` [PATCH 2/5] KVM: x86 emulator: emulate LLDT Avi Kivity
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