- 11 May, 2011 40 commits
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Xiao Guangrong authored
The mmu_seq verification can be removed since we get the pfn in the protection of mmu_lock. Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Gleb Natapov authored
Signed-off-by:
Gleb Natapov <gleb@redhat.com> Signed-off-by:
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Justin P. Mattock authored
The patch below removes unsigned long base_addresss; in i8254.h since it is unused. Signed-off-by:
Justin P. Mattock <justinmattock@gmail.com> Signed-off-by:
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Joerg Roedel authored
This patch removes all the old code which handled the nested selective cr0 write intercepts. This code was only in place as a work-around until the instruction emulator is capable of doing the same. This is the case with this patch-set and so the code can be removed. Signed-off-by:
Joerg Roedel <joerg.roedel@amd.com> Signed-off-by:
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Joerg Roedel authored
This patch adds code to check for IOIO intercepts on instructions decoded by the KVM instruction emulator. [avi: fix build error due to missing #define D2bvIP] Signed-off-by:
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Joerg Roedel authored
This patch add intercept checks for emulated one-byte instructions to the KVM instruction emulation path. Signed-off-by:
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Joerg Roedel authored
This patch adds intercepts checks for the remaining twobyte instructions to the KVM instruction emulator. Signed-off-by:
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Joerg Roedel authored
This patch implements the emulator intercept checks for the RDTSCP, MONITOR, and MWAIT instructions. Signed-off-by:
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Joerg Roedel authored
This patch adds the necessary code changes in the instruction emulator and the extensions to svm.c to implement intercept checks for the svm instructions. Signed-off-by:
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Joerg Roedel authored
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:
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Joerg Roedel authored
This patch adds the intercept checks for instruction accessing the debug registers. Signed-off-by:
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Joerg Roedel authored
This patch adds all necessary intercept checks for instructions that access the crX registers. Signed-off-by:
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Joerg Roedel authored
This patch adds a callback into kvm_x86_ops so that svm and vmx code can do intercept checks on emulated instructions. Signed-off-by:
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Joerg Roedel authored
This patch adds a flag for the opcoded to tag instruction which are only recognized in protected mode. The necessary check is added too. Signed-off-by:
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Joerg Roedel authored
This patch adds a check_perm callback for each opcode into the instruction emulator. This will be used to do all necessary permission checks on instructions before checking whether they are intercepted or not. Signed-off-by:
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Joerg Roedel authored
This patch prevents the changed CPU state to be written back when the emulator detected that the instruction was intercepted by the guest. Signed-off-by:
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Avi Kivity authored
Add intercept codes for instructions defined by SVM as interceptable. Signed-off-by:
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Avi Kivity authored
When running in guest mode, certain instructions can be intercepted by hardware. This also holds for nested guests running on emulated virtualization hardware, in particular instructions emulated by kvm itself. This patch adds a framework for intercepting instructions. If an instruction is marked for interception, and if we're running in guest mode, a callback is called to check whether an intercept is needed or not. The callback is called at three points in time: immediately after beginning execution, after checking privilge exceptions, and after checking memory exception. This suits the different interception points defined for different instructions and for the various virtualization instruction sets. In addition, a new X86EMUL_INTERCEPT is defined, which any callback or memory access may define, allowing the more complicated intercepts to be implemented in existing callbacks. Signed-off-by:
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Avi Kivity authored
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Avi Kivity authored
Add support for marking an instruction as SSE, switching registers used to the SSE register file. Signed-off-by: -
Avi Kivity authored
Most SIMD instructions use the 66/f2/f3 prefixes to distinguish between different variants of the same instruction. Usually the encoding is quite regular, but in some cases (including non-SIMD instructions) the prefixes generate very different instructions. Examples include XCHG/PAUSE, MOVQ/MOVDQA/MOVDQU, and MOVBE/CRC32. Allow the emulator to handle these special cases by splitting such opcodes into groups, with different decode flags and execution functions for different prefixes. Signed-off-by: -
Avi Kivity authored
Needed for emulating fpu instructions. Signed-off-by: -
Avi Kivity authored
Currently we store a rep prefix as 1 or 2 depending on whether it is a REPE or REPNE. Since sse instructions depend on the prefix value, store it as the original opcode to simplify things further on. Signed-off-by: -
Avi Kivity authored
Since sse instructions can issue 16-byte mmios, we need to support them. We can't increase the kvm_run mmio buffer size to 16 bytes without breaking compatibility, so instead we break the large mmios into two smaller 8-byte ones. Since the bus is 64-bit we aren't breaking any atomicity guarantees. Signed-off-by: -
Avi Kivity authored
Make room for sse mmio completions. Signed-off-by: -
Avi Kivity authored
Needed for coalesced mmio using sse. Signed-off-by: -
Gleb Natapov authored
Fix race between nmi injection and enabling nmi window in a simpler way. Signed-off-by:Marcelo Tosatti <mtosatti@redhat.com>
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Marcelo Tosatti authored
This reverts commit f8636849. Simpler fix to follow. Signed-off-by:
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Glauber Costa authored
As Avi recently mentioned, the new standard mechanism for exposing features is KVM_GET_SUPPORTED_CPUID, not spamming CAPs. For some reason async pf missed that. So expose async_pf here. Signed-off-by:
Glauber Costa <glommer@redhat.com> CC: Gleb Natapov <gleb@redhat.com> CC: Avi Kivity <avi@redhat.com> Signed-off-by:
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Avi Kivity authored
Use vmx_set_nmi_mask() instead of open-coding management of the hardware bit and the software hint (nmi_known_unmasked). There's a slight change of behaviour when running without hardware virtual NMI support - we now clear the NMI mask if NMI delivery faulted in that case as well. This improves emulation accuracy. Signed-off-by: -
Jan Kiszka authored
We use boot_cpu_has now. Signed-off-by:
Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by:
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Avi Kivity authored
vmx_complete_atomic_exit() cached it for us, so we can use it here. Signed-off-by: -
Avi Kivity authored
Only read it if we're going to use it later. Signed-off-by: -
Avi Kivity authored
Move the exit reason checks to the front of the function, for early exit in the common case. Signed-off-by: -
Avi Kivity authored
Check for the exit reason first; this allows us, later, to avoid a VMREAD for VM_EXIT_INTR_INFO_FIELD. Signed-off-by: -
Avi Kivity authored
When we haven't injected an interrupt, we don't need to recover the nmi blocking state (since the guest can't set it by itself). This allows us to avoid a VMREAD later on. Signed-off-by: -
Avi Kivity authored
We may read the cpl quite often in the same vmexit (instruction privilege check, memory access checks for instruction and operands), so we gain a bit if we cache the value. Signed-off-by: -
Avi Kivity authored
In long mode, vm86 mode is disallowed, so we need not check for it. Reading rflags.vm may require a VMREAD, so it is expensive. Signed-off-by: -
Avi Kivity authored
If called several times within the same exit, return cached results. Signed-off-by: -
Avi Kivity authored
Some rflags bits are owned by the host, not guest, so we need to use kvm_get_rflags() to strip those bits away or kvm_set_rflags() to add them back. Signed-off-by:
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