- 30 Jan, 2008 40 commits
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Izik Eidus authored
This changes kvm_write_guest_page/kvm_read_guest_page to use copy_to_user/read_from_user, as a result we get better speed and better dirty bit tracking. Signed-off-by:
Izik Eidus <izike@qumranet.com> Signed-off-by:
Avi Kivity <avi@qumranet.com>
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Izik Eidus authored
Convert a guest frame number to the corresponding host virtual address. Signed-off-by:
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Izik Eidus authored
Check for the "error hva", an address outside the user address space that signals a bad gfn. Signed-off-by:
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Avi Kivity authored
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Izik Eidus authored
it is removed beacuse it isnt supported on a real host Signed-off-by:
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Eddie Dong authored
Add wbinvd VM Exit support to prepare for pass-through device cache emulation and also enhance real time responsiveness. Signed-off-by:
Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by:
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Eddie Dong authored
Add comments for secondary/primary Processor-Based VM-execution controls. Signed-off-by:
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Avi Kivity authored
If vmx fails to inject a real-mode interrupt while fetching the interrupt redirection table, it fails to record this in the vectoring information field. So we detect this condition and do it ourselves. Signed-off-by: -
Avi Kivity authored
We'll want to write to it in order to fix real-mode irq injection problems, but it is a read-only field. Storing it in a variable solves that issue. Signed-off-by: -
Avi Kivity authored
Instead of injecting real-mode interrupts by writing the interrupt frame into guest memory, abuse vmx by injecting a software interrupt. We need to pretend the software interrupt instruction had a length > 0, so we have to adjust rip backward. This lets us not to mess with writing guest memory, which is complex and also sleeps. Signed-off-by: -
Dor Laor authored
Every write access to guest pages should be tracked. Signed-off-by:
Dor Laor <dor.laor@qumranet.com> Signed-off-by:
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Hollis Blanchard authored
Signed-off-by:
Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by:
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Hollis Blanchard authored
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Hollis Blanchard authored
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Hollis Blanchard authored
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Avi Kivity authored
Signed-off-by: -
Uri Lublin authored
Recommended by Izik Eidus. Signed-off-by:
Uri Lublin <uril@qumranet.com> Signed-off-by:
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Avi Kivity authored
Now that rex_prefix is part of the decode cache, there is no need to pass it along. Signed-off-by: -
Avi Kivity authored
Instructions like 'inc reg' that have the register operand encoded in the opcode are currently specially decoded. Extend decode_register_operand() to handle that case, indicated by having DstReg or SrcReg without ModRM. Signed-off-by: -
Avi Kivity authored
Share the common parts of SrcReg and DstReg decoding. Signed-off-by: -
Carsten Otte authored
This patch moves implementation of the following functions from kvm_main.c to x86.c: free_pio_guest_pages, vcpu_find_pio_dev, pio_copy_data, complete_pio, kernel_pio, pio_string_write, kvm_emulate_pio, kvm_emulate_pio_string The function inject_gp, which was duplicated by yesterday's patch series, is removed from kvm_main.c now because it is not needed anymore. Signed-off-by:
Carsten Otte <cotte@de.ibm.com> Acked-by:
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Carsten Otte authored
This patch moves the following functions to from kvm_main.c to x86.c: emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev, emulator_read/write_emulated, emulator_write_phys, emulator_write_emulated_onepage, emulator_cmpxchg_emulated, get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr, kvm_report_emulation_failure, emulate_instruction The following data type is moved to x86.c: struct x86_emulate_ops emulate_ops Signed-off-by:
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Carsten Otte authored
This patch moves the implementation of the functions of kvm_get/set_msr, kvm_get/set_msr_common, and set_efer from kvm_main.c to x86.c. The definition of EFER_RESERVED_BITS is moved too. Signed-off-by:
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Anthony Liguori authored
KVM's nopage handler calls gfn_to_page() which acquires the mmap_sem when calling out to get_user_pages(). nopage handlers are already invoked with the mmap_sem held though. Introduce a __gfn_to_page() for use by the nopage handler which requires the lock to already be held. This was noticed by tglx. Signed-off-by:
Anthony Liguori <aliguori@us.ibm.com> Signed-off-by:
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Sheng Yang authored
This patch based on CR8/TPR patch, and enable the TPR shadow (FlexPriority) for 32bit Windows. Since TPR is accessed very frequently by 32bit Windows, especially SMP guest, with FlexPriority enabled, we saw significant performance gain. Signed-off-by:
Sheng Yang <sheng.yang@intel.com> Signed-off-by:
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Carsten Otte authored
This patch moves the definitions of CR0_RESERVED_BITS, CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following functions from kvm_main.c to x86.c: set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(), load_pdptrs() The static function wrapper inject_gp is duplicated in kvm_main.c and x86.c for now, the version in kvm_main.c should disappear once the last user of it is gone too. The function load_pdptrs is no longer static, and now defined in x86.h for the time being, until the last user of it is gone from kvm_main.c. Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com> Acked-by:
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Carsten Otte authored
This patch moves the implementation of get_apic_base and set_apic_base from kvm_main.c to x86.c Signed-off-by:
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Carsten Otte authored
This patch moves the definition of segment_descriptor_64 for AMD64 and EM64T from kvm_main.c to segment_descriptor.h. It also adds a proper #ifndef...#define...#endif around that header file. The implementation of segment_base is moved from kvm_main.c to x86.c. Signed-off-by:
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Carsten Otte authored
This patch splits kvm_vm_ioctl into archtecture independent parts, and x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c. The patch is unchanged since last submission. Common ioctls for all architectures are: KVM_CREATE_VCPU, KVM_GET_DIRTY_LOG, KVM_SET_USER_MEMORY_REGION x86 specific ioctls are: KVM_SET_MEMORY_REGION, KVM_GET/SET_NR_MMU_PAGES, KVM_SET_MEMORY_ALIAS, KVM_CREATE_IRQCHIP, KVM_CREATE_IRQ_LINE, KVM_GET/SET_IRQCHIP KVM_SET_TSS_ADDR Signed-off-by:
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Avi Kivity authored
Emulation may cause a shadow pte to be instantiated, which requires memory resources. Make sure the caches are filled to avoid an oops. Signed-off-by: -
Avi Kivity authored
The code that dispatches the page fault and emulates if we failed to map is duplicated across vmx and svm. Merge it to simplify further bugfixing. Signed-off-by: -
Avi Kivity authored
The 'mov abs' instruction family (opcodes 0xa0 - 0xa3) still depends on cr2 provided by the page fault handler. This is wrong for several reasons: - if an instruction accessed misaligned data that crosses a page boundary, and if the fault happened on the second page, cr2 will point at the second page, not the data itself. - if we're emulating in real mode, or due to a FlexPriority exit, there is no cr2 generated. So, this change adds decoding for this instruction form and drops reliance on cr2. Signed-off-by: -
Laurent Vivier authored
This patch lets GCC to determine which registers to save when we switch to/from a VCPU in the case of AMD i386 * Original code saves following registers: ebx, ecx, edx, esi, edi, ebp * Patched code: - informs GCC that we modify following registers using the clobber description: ebx, ecx, edx, esi, edi - rbp is saved (pop/push) because GCC seems to ignore its use in the clobber description. Signed-off-by:Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by:
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Laurent Vivier authored
This patch lets GCC to determine which registers to save when we switch to/from a VCPU in the case of AMD x86_64. * Original code saves following registers: rbx, rcx, rdx, rsi, rdi, rbp, r8, r9, r10, r11, r12, r13, r14, r15 * Patched code: - informs GCC that we modify following registers using the clobber description: rbx, rcx, rdx, rsi, rdi r8, r9, r10, r11, r12, r13, r14, r15 - rbp is saved (pop/push) because GCC seems to ignore its use in the clobber description. Signed-off-by: -
Laurent Vivier authored
This patch lets GCC to determine which registers to save when we switch to/from a VCPU in the case of intel i386. * Original code saves following registers: eax, ebx, ecx, edx, edi, esi, ebp (using popa) * Patched code: - informs GCC that we modify following registers using the clobber description: ebx, edi, rsi - doesn't save eax because it is an output operand (vmx->fail) - cannot put ecx in clobber description because it is an input operand, but as we modify it and we want to keep its value (vcpu), we must save it (pop/push) - ebp is saved (pop/push) because GCC seems to ignore its use the clobber description. - edx is saved (pop/push) because it is reserved by GCC (REGPARM) and cannot be put in the clobber description. - line "mov (%%esp), %3 \n\t" has been removed because %3 is ecx and ecx is restored just after. Signed-off-by: -
Laurent Vivier authored
This patch lets GCC to determine which registers to save when we switch to/from a VCPU in the case of intel x86_64. * Original code saves following registers: rax, rbx, rcx, rdx, rsi, rdi, rbp, r8, r9, r10, r11, r12, r13, r14, r15 * Patched code: - informs GCC that we modify following registers using the clobber description: rbx, rdi, rsi, r8, r9, r10, r11, r12, r13, r14, r15 - doesn't save rax because it is an output operand (vmx->fail) - cannot put rcx in clobber description because it is an input operand, but as we modify it and we want to keep its value (vcpu), we must save it (pop/push) - rbp is saved (pop/push) because GCC seems to ignore its use in the clobber description. - rdx is saved (pop/push) because it is reserved by GCC (REGPARM) and cannot be put in the clobber description. - line "mov (%%rsp), %3 \n\t" has been removed because %3 is rcx and rcx is restored just after. - line ASM_VMX_VMWRITE_RSP_RDX() is moved out of the ifdef/else/endif Signed-off-by: -
Izik Eidus authored
Currently kvm has a wart in that it requires three extra pages for use as a tss when emulating real mode on Intel. This patch moves the allocation internally, only requiring userspace to tell us where in the physical address space we can place the tss. Signed-off-by:
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Izik Eidus authored
Reserve a few memory slots for kernel internal use. This is good for case you have to register memory region and you want to be sure it was not registered from userspace, and for case you want to register a memory region that won't be seen from userspace. Signed-off-by:
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Izik Eidus authored
Remove kvm memory slot allocation mechanism from the ioctl and put it to exported function. Signed-off-by:
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Izik Eidus authored
kvm_vm_ioctl_set_memory_region() is able to remove memory in addition to adding it. Therefore when using kernel swapping support for old userspaces, we need to munmap the memory if the user request to remove it Signed-off-by:
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