diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-20 21:13:26 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-20 21:13:26 -0700 |
commit | f076ab8d048f152b968bb1c6313fed88abb037fe (patch) | |
tree | fe9ff7bc40d04c5a12eb41a90cc0e1dbf8ae4e45 /arch/x86/kvm/svm.c | |
parent | db6d8c7a4027b48d797b369a53f8470aaeed7063 (diff) | |
parent | 597a5f551ec4cd0aa0966e4fff4684ecc8c31c0d (diff) |
Merge branch 'kvm-updates-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'kvm-updates-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (70 commits)
KVM: Adjust smp_call_function_mask() callers to new requirements
KVM: MMU: Fix potential race setting upper shadow ptes on nonpae hosts
KVM: x86 emulator: emulate clflush
KVM: MMU: improve invalid shadow root page handling
KVM: MMU: nuke shadowed pgtable pages and ptes on memslot destruction
KVM: Prefix some x86 low level function with kvm_, to avoid namespace issues
KVM: check injected pic irq within valid pic irqs
KVM: x86 emulator: Fix HLT instruction
KVM: Apply the kernel sigmask to vcpus blocked due to being uninitialized
KVM: VMX: Add ept_sync_context in flush_tlb
KVM: mmu_shrink: kvm_mmu_zap_page requires slots_lock to be held
x86: KVM guest: make kvm_smp_prepare_boot_cpu() static
KVM: SVM: fix suspend/resume support
KVM: s390: rename private structures
KVM: s390: Set guest storage limit and offset to sane values
KVM: Fix memory leak on guest exit
KVM: s390: dont allocate dirty bitmap
KVM: move slots_lock acquision down to vapic_exit
KVM: VMX: Fake emulate Intel perfctr MSRs
KVM: VMX: Fix a wrong usage of vmcs_config
...
Diffstat (limited to 'arch/x86/kvm/svm.c')
-rw-r--r-- | arch/x86/kvm/svm.c | 131 |
1 files changed, 90 insertions, 41 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 6b0d5fa5bab..b756e876dce 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -27,6 +27,8 @@ #include <asm/desc.h> +#define __ex(x) __kvm_handle_fault_on_reboot(x) + MODULE_AUTHOR("Qumranet"); MODULE_LICENSE("GPL"); @@ -129,17 +131,17 @@ static inline void push_irq(struct kvm_vcpu *vcpu, u8 irq) static inline void clgi(void) { - asm volatile (SVM_CLGI); + asm volatile (__ex(SVM_CLGI)); } static inline void stgi(void) { - asm volatile (SVM_STGI); + asm volatile (__ex(SVM_STGI)); } static inline void invlpga(unsigned long addr, u32 asid) { - asm volatile (SVM_INVLPGA :: "a"(addr), "c"(asid)); + asm volatile (__ex(SVM_INVLPGA) :: "a"(addr), "c"(asid)); } static inline unsigned long kvm_read_cr2(void) @@ -270,19 +272,11 @@ static int has_svm(void) static void svm_hardware_disable(void *garbage) { - struct svm_cpu_data *svm_data - = per_cpu(svm_data, raw_smp_processor_id()); - - if (svm_data) { - uint64_t efer; + uint64_t efer; - wrmsrl(MSR_VM_HSAVE_PA, 0); - rdmsrl(MSR_EFER, efer); - wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK); - per_cpu(svm_data, raw_smp_processor_id()) = NULL; - __free_page(svm_data->save_area); - kfree(svm_data); - } + wrmsrl(MSR_VM_HSAVE_PA, 0); + rdmsrl(MSR_EFER, efer); + wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK); } static void svm_hardware_enable(void *garbage) @@ -321,6 +315,19 @@ static void svm_hardware_enable(void *garbage) page_to_pfn(svm_data->save_area) << PAGE_SHIFT); } +static void svm_cpu_uninit(int cpu) +{ + struct svm_cpu_data *svm_data + = per_cpu(svm_data, raw_smp_processor_id()); + + if (!svm_data) + return; + + per_cpu(svm_data, raw_smp_processor_id()) = NULL; + __free_page(svm_data->save_area); + kfree(svm_data); +} + static int svm_cpu_init(int cpu) { struct svm_cpu_data *svm_data; @@ -458,6 +465,11 @@ err: static __exit void svm_hardware_unsetup(void) { + int cpu; + + for_each_online_cpu(cpu) + svm_cpu_uninit(cpu); + __free_pages(pfn_to_page(iopm_base >> PAGE_SHIFT), IOPM_ALLOC_ORDER); iopm_base = 0; } @@ -707,10 +719,6 @@ static void svm_vcpu_put(struct kvm_vcpu *vcpu) rdtscll(vcpu->arch.host_tsc); } -static void svm_vcpu_decache(struct kvm_vcpu *vcpu) -{ -} - static void svm_cache_regs(struct kvm_vcpu *vcpu) { struct vcpu_svm *svm = to_svm(vcpu); @@ -949,7 +957,9 @@ static void new_asid(struct vcpu_svm *svm, struct svm_cpu_data *svm_data) static unsigned long svm_get_dr(struct kvm_vcpu *vcpu, int dr) { - return to_svm(vcpu)->db_regs[dr]; + unsigned long val = to_svm(vcpu)->db_regs[dr]; + KVMTRACE_2D(DR_READ, vcpu, (u32)dr, (u32)val, handler); + return val; } static void svm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long value, @@ -1004,6 +1014,16 @@ static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) fault_address = svm->vmcb->control.exit_info_2; error_code = svm->vmcb->control.exit_info_1; + + if (!npt_enabled) + KVMTRACE_3D(PAGE_FAULT, &svm->vcpu, error_code, + (u32)fault_address, (u32)(fault_address >> 32), + handler); + else + KVMTRACE_3D(TDP_FAULT, &svm->vcpu, error_code, + (u32)fault_address, (u32)(fault_address >> 32), + handler); + return kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code); } @@ -1081,6 +1101,19 @@ static int io_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) return kvm_emulate_pio(&svm->vcpu, kvm_run, in, size, port); } +static int nmi_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) +{ + KVMTRACE_0D(NMI, &svm->vcpu, handler); + return 1; +} + +static int intr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) +{ + ++svm->vcpu.stat.irq_exits; + KVMTRACE_0D(INTR, &svm->vcpu, handler); + return 1; +} + static int nop_on_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) { return 1; @@ -1219,6 +1252,9 @@ static int rdmsr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) if (svm_get_msr(&svm->vcpu, ecx, &data)) kvm_inject_gp(&svm->vcpu, 0); else { + KVMTRACE_3D(MSR_READ, &svm->vcpu, ecx, (u32)data, + (u32)(data >> 32), handler); + svm->vmcb->save.rax = data & 0xffffffff; svm->vcpu.arch.regs[VCPU_REGS_RDX] = data >> 32; svm->next_rip = svm->vmcb->save.rip + 2; @@ -1284,16 +1320,19 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 data) case MSR_K7_EVNTSEL1: case MSR_K7_EVNTSEL2: case MSR_K7_EVNTSEL3: + case MSR_K7_PERFCTR0: + case MSR_K7_PERFCTR1: + case MSR_K7_PERFCTR2: + case MSR_K7_PERFCTR3: /* - * only support writing 0 to the performance counters for now - * to make Windows happy. Should be replaced by a real - * performance counter emulation later. + * Just discard all writes to the performance counters; this + * should keep both older linux and windows 64-bit guests + * happy */ - if (data != 0) - goto unhandled; + pr_unimpl(vcpu, "unimplemented perfctr wrmsr: 0x%x data 0x%llx\n", ecx, data); + break; default: - unhandled: return kvm_set_msr_common(vcpu, ecx, data); } return 0; @@ -1304,6 +1343,10 @@ static int wrmsr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) u32 ecx = svm->vcpu.arch.regs[VCPU_REGS_RCX]; u64 data = (svm->vmcb->save.rax & -1u) | ((u64)(svm->vcpu.arch.regs[VCPU_REGS_RDX] & -1u) << 32); + + KVMTRACE_3D(MSR_WRITE, &svm->vcpu, ecx, (u32)data, (u32)(data >> 32), + handler); + svm->next_rip = svm->vmcb->save.rip + 2; if (svm_set_msr(&svm->vcpu, ecx, data)) kvm_inject_gp(&svm->vcpu, 0); @@ -1323,6 +1366,8 @@ static int msr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) static int interrupt_window_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) { + KVMTRACE_0D(PEND_INTR, &svm->vcpu, handler); + svm->vmcb->control.intercept &= ~(1ULL << INTERCEPT_VINTR); svm->vmcb->control.int_ctl &= ~V_IRQ_MASK; /* @@ -1364,8 +1409,8 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm, [SVM_EXIT_EXCP_BASE + PF_VECTOR] = pf_interception, [SVM_EXIT_EXCP_BASE + NM_VECTOR] = nm_interception, [SVM_EXIT_EXCP_BASE + MC_VECTOR] = mc_interception, - [SVM_EXIT_INTR] = nop_on_interception, - [SVM_EXIT_NMI] = nop_on_interception, + [SVM_EXIT_INTR] = intr_interception, + [SVM_EXIT_NMI] = nmi_interception, [SVM_EXIT_SMI] = nop_on_interception, [SVM_EXIT_INIT] = nop_on_interception, [SVM_EXIT_VINTR] = interrupt_window_interception, @@ -1397,6 +1442,9 @@ static int handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) struct vcpu_svm *svm = to_svm(vcpu); u32 exit_code = svm->vmcb->control.exit_code; + KVMTRACE_3D(VMEXIT, vcpu, exit_code, (u32)svm->vmcb->save.rip, + (u32)((u64)svm->vmcb->save.rip >> 32), entryexit); + if (npt_enabled) { int mmu_reload = 0; if ((vcpu->arch.cr0 ^ svm->vmcb->save.cr0) & X86_CR0_PG) { @@ -1470,6 +1518,8 @@ static inline void svm_inject_irq(struct vcpu_svm *svm, int irq) { struct vmcb_control_area *control; + KVMTRACE_1D(INJ_VIRQ, &svm->vcpu, (u32)irq, handler); + control = &svm->vmcb->control; control->int_vector = irq; control->int_ctl &= ~V_INTR_PRIO_MASK; @@ -1660,9 +1710,9 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) sync_lapic_to_cr8(vcpu); save_host_msrs(vcpu); - fs_selector = read_fs(); - gs_selector = read_gs(); - ldt_selector = read_ldt(); + fs_selector = kvm_read_fs(); + gs_selector = kvm_read_gs(); + ldt_selector = kvm_read_ldt(); svm->host_cr2 = kvm_read_cr2(); svm->host_dr6 = read_dr6(); svm->host_dr7 = read_dr7(); @@ -1716,17 +1766,17 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) /* Enter guest mode */ "push %%rax \n\t" "mov %c[vmcb](%[svm]), %%rax \n\t" - SVM_VMLOAD "\n\t" - SVM_VMRUN "\n\t" - SVM_VMSAVE "\n\t" + __ex(SVM_VMLOAD) "\n\t" + __ex(SVM_VMRUN) "\n\t" + __ex(SVM_VMSAVE) "\n\t" "pop %%rax \n\t" #else /* Enter guest mode */ "push %%eax \n\t" "mov %c[vmcb](%[svm]), %%eax \n\t" - SVM_VMLOAD "\n\t" - SVM_VMRUN "\n\t" - SVM_VMSAVE "\n\t" + __ex(SVM_VMLOAD) "\n\t" + __ex(SVM_VMRUN) "\n\t" + __ex(SVM_VMSAVE) "\n\t" "pop %%eax \n\t" #endif @@ -1795,9 +1845,9 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) write_dr7(svm->host_dr7); kvm_write_cr2(svm->host_cr2); - load_fs(fs_selector); - load_gs(gs_selector); - load_ldt(ldt_selector); + kvm_load_fs(fs_selector); + kvm_load_gs(gs_selector); + kvm_load_ldt(ldt_selector); load_host_msrs(vcpu); reload_tss(vcpu); @@ -1889,7 +1939,6 @@ static struct kvm_x86_ops svm_x86_ops = { .prepare_guest_switch = svm_prepare_guest_switch, .vcpu_load = svm_vcpu_load, .vcpu_put = svm_vcpu_put, - .vcpu_decache = svm_vcpu_decache, .set_guest_debug = svm_guest_debug, .get_msr = svm_get_msr, |