- 17 5月, 2010 20 次提交
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由 Gleb Natapov 提交于
Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Implement emulation of 16/32 bit task switch in emulator.c Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
When x86_emulate_insn() does not know how to emulate instruction it exits via cannot_emulate label in all cases except when emulating grp3. Fix that. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
If LOCK prefix is used dest arg should be memory, otherwise instruction should generate #UD. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Return X86EMUL_PROPAGATE_FAULT is fault was injected. Also inject #UD for those instruction when appropriate. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
If CR4.DE=1 access to registers DR4/DR5 cause #UD. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Resent spec says that for 0f (20|21|22|23) the 2 bits in the mod field are ignored. Interestingly enough older spec says that 11 is only valid encoding. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
It is undefined and should generate #UD. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
mov r/m, sreg generates #UD ins sreg is incorrect. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Eliminate the need to call back into KVM to get it from emulator. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Use (get|set)_cr callback to emulate lmsw inside emulator. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Use this callback instead of directly call kvm function. Also rename realmode_(set|get)_cr to emulator_(set|get)_cr since function has nothing to do with real mode. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Mov reg, cr instruction doesn't change flags in any meaningful way, so no need to update rflags after instruction execution. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Check return value against correct define instead of open code the value. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
During rep emulation access length to RCX depends on current address mode. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
Set correct operation length. Add RAX (64bit) handling. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gleb Natapov 提交于
LMSW is present in both group tables. It was marked privileged only in one of them. Intel analog of VMMCALL is already marked privileged. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 25 4月, 2010 7 次提交
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由 Gleb Natapov 提交于
Implement jmp far opcode ff/5. It is used by multiboot loader. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Add decoding of Ep type of argument used by callf/jmpf. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
The interrupt shadow created by STI or MOV-SS-like operations is part of the VCPU state and must be preserved across migration. Transfer it in the spare padding field of kvm_vcpu_events.interrupt. As a side effect we now have to make vmx_set_interrupt_shadow robust against both shadow types being set. Give MOV SS a higher priority and skip STI in that case to avoid that VMX throws a fault on next entry. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
This patch makes non-X86EMUL_* family functions not to use the variable rc. Be sure that this changes nothing but makes the purpose of the variable rc clearer. Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
This patch just replaces integer values used inside x86_emulate_insn() and its helper functions to X86EMUL_*. The purpose of this is to make it clear what will happen when the variable rc is compared to X86EMUL_* at the end of x86_emulate_insn(). Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
This patch just replaces the integer values used inside x86's decode functions to X86EMUL_*. By this patch, it becomes clearer that we are using X86EMUL_* value propagated from ops->read_std() in do_fetch_insn_byte(). Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Some instruction are obsolete in a long mode. Inject #UD. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 01 3月, 2010 13 次提交
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由 Takuya Yoshikawa 提交于
This patch fixes emulate_syscall(), emulate_sysenter() and emulate_sysexit() to handle injected faults properly. Even though original code injects faults in these functions, we cannot handle these unless we use the different return value from the UNHANDLEABLE case. So this patch use X86EMUL_* codes instead of -1 and 0 and makes x86_emulate_insn() to handle these propagated faults. Be sure that, in x86_emulate_insn(), goto cannot_emulate and goto done with rc equals X86EMUL_UNHANDLEABLE have same effect. Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Add proper error and permission checking. This patch also change task switching code to load segment selectors before segment descriptors, like SDM requires, otherwise permission checking during segment descriptor loading will be incorrect. Cc: stable@kernel.org (2.6.33, 2.6.32) Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Inject #UD if guest attempts to do so. This is in accordance to Intel SDM. Cc: stable@kernel.org (2.6.33, 2.6.32) Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Instructions with opcode 82 are not valid in 64 bit mode. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Wei Yongjun 提交于
Just remove redundant semicolon. Signed-off-by: NWei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Instructions which are not allowed to have LOCK prefix should generate #UD if one is used. [avi: fold opcode 82 fix from another patch] Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Add CPL checking in case emulator is tricked into emulating privilege instruction from userspace. Signed-off-by: NGleb Natapov <gleb@redhat.com> Cc: stable@kernel.org Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
POPF behaves differently depending on current CPU mode. Emulate correct logic to prevent guest from changing flags that it can't change otherwise. Signed-off-by: NGleb Natapov <gleb@redhat.com> Cc: stable@kernel.org Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Make emulator check that vcpu is allowed to execute IN, INS, OUT, OUTS, CLI, STI. Signed-off-by: NGleb Natapov <gleb@redhat.com> Cc: stable@kernel.org Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Currently when x86 emulator needs to access memory, page walk is done with broadest permission possible, so if emulated instruction was executed by userspace process it can still access kernel memory. Fix that by providing correct memory access to page walker during emulation. Signed-off-by: NGleb Natapov <gleb@redhat.com> Cc: stable@kernel.org Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
For some instructions CPU behaves differently for real-mode and virtual 8086. Let emulator know which mode cpu is in, so it will not poke into vcpu state directly. Signed-off-by: NGleb Natapov <gleb@redhat.com> Cc: stable@kernel.org Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Use groups mechanism to decode 0F C7 instructions. Signed-off-by: NGleb Natapov <gleb@redhat.com> Cc: stable@kernel.org Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Use groups mechanism to decode 0F BA instructions. Signed-off-by: NGleb Natapov <gleb@redhat.com> Cc: stable@kernel.org Signed-off-by: NAvi Kivity <avi@redhat.com>
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