hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

The usual smattering of fixes and tunings that came in too late for the 

merge window, but should not wait four months before they appear in
 a release.  I also travelled a bit more than usual in the first part
 of May, which didn't help with picking up patches and reports promptly.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQEcBAABAgAGBQJc6RkmAAoJEL/70l94x66DhEAH/ijCkibV9vOUu8n/lSxMjAzi
 I/Y1VEaVRFuQ6u0QSjWBBg22tVsWuWiVbonJ63w3JMRwi5Q5zW9REE7EaKRAa/eC
 FiFE7vTesYh6sGVwdMCwoinjMDyCp7hybvtBc608+MWhVmrdzTYtPm5N85wxIDtW
 xH5Kr2mVeLC43X3vfegolmXZ1obAbZEToJvOgJrYFhnzsmVYYl182kfGtrppBoO0
 XXDPuDRGpTrm6A2oADMdOv+mT9p51pHsedmHQaDGXwAGEC/BkOGKdIdBfwppEwy7
 QP2NGqwkHIyghV1aCPacT6O6G6xL0i2rfvlJ7+e6o7deU4uMXAqIdQ2DbIcHy3g=
 =5IW2
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "The usual smattering of fixes and tunings that came in too late for
  the merge window, but should not wait four months before they appear
  in a release.

  I also travelled a bit more than usual in the first part of May, which
  didn't help with picking up patches and reports promptly"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (33 commits)
  KVM: x86: fix return value for reserved EFER
  tools/kvm_stat: fix fields filter for child events
  KVM: selftests: Wrap vcpu_nested_state_get/set functions with x86 guard
  kvm: selftests: aarch64: compile with warnings on
  kvm: selftests: aarch64: fix default vm mode
  kvm: selftests: aarch64: dirty_log_test: fix unaligned memslot size
  KVM: s390: fix memory slot handling for KVM_SET_USER_MEMORY_REGION
  KVM: x86/pmu: do not mask the value that is written to fixed PMUs
  KVM: x86/pmu: mask the result of rdpmc according to the width of the counters
  x86/kvm/pmu: Set AMD's virt PMU version to 1
  KVM: x86: do not spam dmesg with VMCS/VMCB dumps
  kvm: Check irqchip mode before assign irqfd
  kvm: svm/avic: fix off-by-one in checking host APIC ID
  KVM: selftests: do not blindly clobber registers in guest asm
  KVM: selftests: Remove duplicated TEST_ASSERT in hyperv_cpuid.c
  KVM: LAPIC: Expose per-vCPU timer_advance_ns to userspace
  KVM: LAPIC: Fix lapic_timer_advance_ns parameter overflow
  kvm: vmx: Fix -Wmissing-prototypes warnings
  KVM: nVMX: Fix using __this_cpu_read() in preemptible context
  kvm: fix compilation on s390
  ...
This commit is contained in:
Linus Torvalds 2019-05-26 13:45:15 -07:00
parent 128f2bfafc 66f61c9288
commit 862f0a3227
44 changed files with 399 additions and 303 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
MAINTAINERS
View File

@ -8611,14 +8611,12 @@ F: arch/x86/include/asm/svm.h
F: arch/x86/kvm/svm.c
KERNEL VIRTUAL MACHINE FOR ARM/ARM64 (KVM/arm, KVM/arm64)
M: Christoffer Dall <christoffer.dall@arm.com>
M: Marc Zyngier <marc.zyngier@arm.com>
R: James Morse <james.morse@arm.com>
R: Julien Thierry <julien.thierry@arm.com>
R: Suzuki K Pouloze <suzuki.poulose@arm.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: kvmarm@lists.cs.columbia.edu
W: http://systems.cs.columbia.edu/projects/kvm-arm
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git
S: Maintained
F: arch/arm/include/uapi/asm/kvm*

1
arch/arm/kvm/hyp/Makefile
View File

@ -11,6 +11,7 @@ CFLAGS_ARMV7VE :=$(call cc-option, -march=armv7ve)
obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/vgic-v3-sr.o
obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/timer-sr.o
obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/aarch32.o
obj-$(CONFIG_KVM_ARM_HOST) += tlb.o
obj-$(CONFIG_KVM_ARM_HOST) += cp15-sr.o

3
arch/arm64/include/asm/kvm_host.h
View File

@ -592,9 +592,6 @@ static inline int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu)
void kvm_set_pmu_events(u32 set, struct perf_event_attr *attr);
void kvm_clr_pmu_events(u32 clr);
void __pmu_switch_to_host(struct kvm_cpu_context *host_ctxt);
bool __pmu_switch_to_guest(struct kvm_cpu_context *host_ctxt);
void kvm_vcpu_pmu_restore_guest(struct kvm_vcpu *vcpu);
void kvm_vcpu_pmu_restore_host(struct kvm_vcpu *vcpu);
#else

1
arch/arm64/kvm/hyp/Makefile
View File

@ -10,6 +10,7 @@ KVM=../../../../virt/kvm
obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/vgic-v3-sr.o
obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/timer-sr.o
obj-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/hyp/aarch32.o
obj-$(CONFIG_KVM_ARM_HOST) += vgic-v2-cpuif-proxy.o
obj-$(CONFIG_KVM_ARM_HOST) += sysreg-sr.o

39
arch/arm64/kvm/hyp/switch.c
View File

@ -16,6 +16,7 @@
*/
#include <linux/arm-smccc.h>
#include <linux/kvm_host.h>
#include <linux/types.h>
#include <linux/jump_label.h>
#include <uapi/linux/psci.h>
@ -505,6 +506,44 @@ static void __hyp_text __set_host_arch_workaround_state(struct kvm_vcpu *vcpu)
#endif
}
/**
* Disable host events, enable guest events
*/
static bool __hyp_text __pmu_switch_to_guest(struct kvm_cpu_context *host_ctxt)
{
struct kvm_host_data *host;
struct kvm_pmu_events *pmu;
host = container_of(host_ctxt, struct kvm_host_data, host_ctxt);
pmu = &host->pmu_events;
if (pmu->events_host)
write_sysreg(pmu->events_host, pmcntenclr_el0);
if (pmu->events_guest)
write_sysreg(pmu->events_guest, pmcntenset_el0);
return (pmu->events_host || pmu->events_guest);
}
/**
* Disable guest events, enable host events
*/
static void __hyp_text __pmu_switch_to_host(struct kvm_cpu_context *host_ctxt)
{
struct kvm_host_data *host;
struct kvm_pmu_events *pmu;
host = container_of(host_ctxt, struct kvm_host_data, host_ctxt);
pmu = &host->pmu_events;
if (pmu->events_guest)
write_sysreg(pmu->events_guest, pmcntenclr_el0);
if (pmu->events_host)
write_sysreg(pmu->events_host, pmcntenset_el0);
}
/* Switch to the guest for VHE systems running in EL2 */
int kvm_vcpu_run_vhe(struct kvm_vcpu *vcpu)
{

38
arch/arm64/kvm/pmu.c
View File

@ -53,44 +53,6 @@ void kvm_clr_pmu_events(u32 clr)
ctx->pmu_events.events_guest &= ~clr;
}
/**
* Disable host events, enable guest events
*/
bool __hyp_text __pmu_switch_to_guest(struct kvm_cpu_context *host_ctxt)
{
struct kvm_host_data *host;
struct kvm_pmu_events *pmu;
host = container_of(host_ctxt, struct kvm_host_data, host_ctxt);
pmu = &host->pmu_events;
if (pmu->events_host)
write_sysreg(pmu->events_host, pmcntenclr_el0);
if (pmu->events_guest)
write_sysreg(pmu->events_guest, pmcntenset_el0);
return (pmu->events_host || pmu->events_guest);
}
/**
* Disable guest events, enable host events
*/
void __hyp_text __pmu_switch_to_host(struct kvm_cpu_context *host_ctxt)
{
struct kvm_host_data *host;
struct kvm_pmu_events *pmu;
host = container_of(host_ctxt, struct kvm_host_data, host_ctxt);
pmu = &host->pmu_events;
if (pmu->events_guest)
write_sysreg(pmu->events_guest, pmcntenclr_el0);
if (pmu->events_host)
write_sysreg(pmu->events_host, pmcntenset_el0);
}
#define PMEVTYPER_READ_CASE(idx) \
case idx: \
return read_sysreg(pmevtyper##idx##_el0)

2
arch/s390/include/asm/kvm_host.h
View File

@ -36,7 +36,7 @@
*/
#define KVM_NR_IRQCHIPS 1
#define KVM_IRQCHIP_NUM_PINS 4096
#define KVM_HALT_POLL_NS_DEFAULT 80000
#define KVM_HALT_POLL_NS_DEFAULT 50000
/* s390-specific vcpu->requests bit members */
#define KVM_REQ_ENABLE_IBS KVM_ARCH_REQ(0)

37
arch/s390/kvm/kvm-s390.c
View File

@ -181,7 +181,7 @@ MODULE_PARM_DESC(hpage, "1m huge page backing support");
/* maximum percentage of steal time for polling. >100 is treated like 100 */
static u8 halt_poll_max_steal = 10;
module_param(halt_poll_max_steal, byte, 0644);
MODULE_PARM_DESC(hpage, "Maximum percentage of steal time to allow polling");
MODULE_PARM_DESC(halt_poll_max_steal, "Maximum percentage of steal time to allow polling");
/*
* For now we handle at most 16 double words as this is what the s390 base
@ -4524,21 +4524,28 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
const struct kvm_memory_slot *new,
enum kvm_mr_change change)
{
int rc;
int rc = 0;
/* If the basics of the memslot do not change, we do not want
* to update the gmap. Every update causes several unnecessary
* segment translation exceptions. This is usually handled just
* fine by the normal fault handler + gmap, but it will also
* cause faults on the prefix page of running guest CPUs.
*/
if (old->userspace_addr == mem->userspace_addr &&
old->base_gfn * PAGE_SIZE == mem->guest_phys_addr &&
old->npages * PAGE_SIZE == mem->memory_size)
return;
rc = gmap_map_segment(kvm->arch.gmap, mem->userspace_addr,
mem->guest_phys_addr, mem->memory_size);
switch (change) {
case KVM_MR_DELETE:
rc = gmap_unmap_segment(kvm->arch.gmap, old->base_gfn * PAGE_SIZE,
old->npages * PAGE_SIZE);
break;
case KVM_MR_MOVE:
rc = gmap_unmap_segment(kvm->arch.gmap, old->base_gfn * PAGE_SIZE,
old->npages * PAGE_SIZE);
if (rc)
break;
/* FALLTHROUGH */
case KVM_MR_CREATE:
rc = gmap_map_segment(kvm->arch.gmap, mem->userspace_addr,
mem->guest_phys_addr, mem->memory_size);
break;
case KVM_MR_FLAGS_ONLY:
break;
default:
WARN(1, "Unknown KVM MR CHANGE: %d\n", change);
}
if (rc)
pr_warn("failed to commit memory region\n");
return;

8
arch/x86/kvm/cpuid.c
View File

@ -456,8 +456,9 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
}
break;
}
/* function 4 has additional index. */
case 4: {
/* functions 4 and 0x8000001d have additional index. */
case 4:
case 0x8000001d: {
int i, cache_type;
entry->flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
@ -701,8 +702,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
entry->ecx = entry->edx = 0;
break;
case 0x8000001a:
break;
case 0x8000001d:
case 0x8000001e:
break;
/*Add support for Centaur's CPUID instruction*/
case 0xC0000000:

18
arch/x86/kvm/debugfs.c
View File

@ -9,12 +9,22 @@
*/
#include <linux/kvm_host.h>
#include <linux/debugfs.h>
#include "lapic.h"
bool kvm_arch_has_vcpu_debugfs(void)
{
return true;
}
static int vcpu_get_timer_advance_ns(void *data, u64 *val)
{
struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data;
*val = vcpu->arch.apic->lapic_timer.timer_advance_ns;
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(vcpu_timer_advance_ns_fops, vcpu_get_timer_advance_ns, NULL, "%llu\n");
static int vcpu_get_tsc_offset(void *data, u64 *val)
{
struct kvm_vcpu *vcpu = (struct kvm_vcpu *) data;
@ -51,6 +61,14 @@ int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
if (!ret)
return -ENOMEM;
if (lapic_in_kernel(vcpu)) {
ret = debugfs_create_file("lapic_timer_advance_ns", 0444,
vcpu->debugfs_dentry,
vcpu, &vcpu_timer_advance_ns_fops);
if (!ret)
return -ENOMEM;
}
if (kvm_has_tsc_control) {
ret = debugfs_create_file("tsc-scaling-ratio", 0444,
vcpu->debugfs_dentry,

7
arch/x86/kvm/irq.c
View File

@ -172,3 +172,10 @@ void __kvm_migrate_timers(struct kvm_vcpu *vcpu)
__kvm_migrate_apic_timer(vcpu);
__kvm_migrate_pit_timer(vcpu);
}
bool kvm_arch_irqfd_allowed(struct kvm *kvm, struct kvm_irqfd *args)
{
bool resample = args->flags & KVM_IRQFD_FLAG_RESAMPLE;
return resample ? irqchip_kernel(kvm) : irqchip_in_kernel(kvm);
}

1
arch/x86/kvm/irq.h
View File

@ -114,6 +114,7 @@ static inline int irqchip_in_kernel(struct kvm *kvm)
return mode != KVM_IRQCHIP_NONE;
}
bool kvm_arch_irqfd_allowed(struct kvm *kvm, struct kvm_irqfd *args);
void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu);
void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu);
void kvm_apic_nmi_wd_deliver(struct kvm_vcpu *vcpu);

10
arch/x86/kvm/pmu.c
View File

@ -283,7 +283,7 @@ int kvm_pmu_rdpmc(struct kvm_vcpu *vcpu, unsigned idx, u64 *data)
bool fast_mode = idx & (1u << 31);
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
struct kvm_pmc *pmc;
u64 ctr_val;
u64 mask = fast_mode ? ~0u : ~0ull;
if (!pmu->version)
return 1;
@ -291,15 +291,11 @@ int kvm_pmu_rdpmc(struct kvm_vcpu *vcpu, unsigned idx, u64 *data)
if (is_vmware_backdoor_pmc(idx))
return kvm_pmu_rdpmc_vmware(vcpu, idx, data);
pmc = kvm_x86_ops->pmu_ops->msr_idx_to_pmc(vcpu, idx);
pmc = kvm_x86_ops->pmu_ops->msr_idx_to_pmc(vcpu, idx, &mask);
if (!pmc)
return 1;
ctr_val = pmc_read_counter(pmc);
if (fast_mode)
ctr_val = (u32)ctr_val;
*data = ctr_val;
*data = pmc_read_counter(pmc) & mask;
return 0;
}

3
arch/x86/kvm/pmu.h
View File

@ -25,7 +25,8 @@ struct kvm_pmu_ops {
unsigned (*find_fixed_event)(int idx);
bool (*pmc_is_enabled)(struct kvm_pmc *pmc);
struct kvm_pmc *(*pmc_idx_to_pmc)(struct kvm_pmu *pmu, int pmc_idx);
struct kvm_pmc *(*msr_idx_to_pmc)(struct kvm_vcpu *vcpu, unsigned idx);
struct kvm_pmc *(*msr_idx_to_pmc)(struct kvm_vcpu *vcpu, unsigned idx,
u64 *mask);
int (*is_valid_msr_idx)(struct kvm_vcpu *vcpu, unsigned idx);
bool (*is_valid_msr)(struct kvm_vcpu *vcpu, u32 msr);
int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr, u64 *data);

4
arch/x86/kvm/pmu_amd.c
View File

@ -186,7 +186,7 @@ static int amd_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx)
}
/* idx is the ECX register of RDPMC instruction */
static struct kvm_pmc *amd_msr_idx_to_pmc(struct kvm_vcpu *vcpu, unsigned idx)
static struct kvm_pmc *amd_msr_idx_to_pmc(struct kvm_vcpu *vcpu, unsigned idx, u64 *mask)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
struct kvm_pmc *counters;
@ -269,10 +269,10 @@ static void amd_pmu_refresh(struct kvm_vcpu *vcpu)
pmu->counter_bitmask[KVM_PMC_GP] = ((u64)1 << 48) - 1;
pmu->reserved_bits = 0xffffffff00200000ull;
pmu->version = 1;
/* not applicable to AMD; but clean them to prevent any fall out */
pmu->counter_bitmask[KVM_PMC_FIXED] = 0;
pmu->nr_arch_fixed_counters = 0;
pmu->version = 0;
pmu->global_status = 0;
}

15
arch/x86/kvm/svm.c
View File

@ -379,6 +379,9 @@ module_param(vgif, int, 0444);
static int sev = IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT);
module_param(sev, int, 0444);
static bool __read_mostly dump_invalid_vmcb = 0;
module_param(dump_invalid_vmcb, bool, 0644);
static u8 rsm_ins_bytes[] = "\x0f\xaa";
static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
@ -2024,7 +2027,11 @@ static void avic_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
if (!kvm_vcpu_apicv_active(vcpu))
return;
if (WARN_ON(h_physical_id >= AVIC_MAX_PHYSICAL_ID_COUNT))
/*
* Since the host physical APIC id is 8 bits,
* we can support host APIC ID upto 255.
*/
if (WARN_ON(h_physical_id > AVIC_PHYSICAL_ID_ENTRY_HOST_PHYSICAL_ID_MASK))
return;
entry = READ_ONCE(*(svm->avic_physical_id_cache));
@ -4824,6 +4831,11 @@ static void dump_vmcb(struct kvm_vcpu *vcpu)
struct vmcb_control_area *control = &svm->vmcb->control;
struct vmcb_save_area *save = &svm->vmcb->save;
if (!dump_invalid_vmcb) {
pr_warn_ratelimited("set kvm_amd.dump_invalid_vmcb=1 to dump internal KVM state.\n");
return;
}
pr_err("VMCB Control Area:\n");
pr_err("%-20s%04x\n", "cr_read:", control->intercept_cr & 0xffff);
pr_err("%-20s%04x\n", "cr_write:", control->intercept_cr >> 16);
@ -4982,7 +4994,6 @@ static int handle_exit(struct kvm_vcpu *vcpu)
kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
kvm_run->fail_entry.hardware_entry_failure_reason
= svm->vmcb->control.exit_code;
pr_err("KVM: FAILED VMRUN WITH VMCB:\n");
dump_vmcb(vcpu);
return 0;
}

35
arch/x86/kvm/vmx/nested.c
View File

@ -2784,14 +2784,13 @@ static int nested_vmx_check_vmentry_hw(struct kvm_vcpu *vcpu)
: "cc", "memory"
);
preempt_enable();
if (vmx->msr_autoload.host.nr)
vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, vmx->msr_autoload.host.nr);
if (vmx->msr_autoload.guest.nr)
vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, vmx->msr_autoload.guest.nr);
if (vm_fail) {
preempt_enable();
WARN_ON_ONCE(vmcs_read32(VM_INSTRUCTION_ERROR) !=
VMXERR_ENTRY_INVALID_CONTROL_FIELD);
return 1;
@ -2803,6 +2802,7 @@ static int nested_vmx_check_vmentry_hw(struct kvm_vcpu *vcpu)
local_irq_enable();
if (hw_breakpoint_active())
set_debugreg(__this_cpu_read(cpu_dr7), 7);
preempt_enable();
/*
* A non-failing VMEntry means we somehow entered guest mode with
@ -5423,39 +5423,44 @@ static int vmx_set_nested_state(struct kvm_vcpu *vcpu,
if (!(kvm_state->flags & KVM_STATE_NESTED_GUEST_MODE))
return 0;
vmx->nested.nested_run_pending =
!!(kvm_state->flags & KVM_STATE_NESTED_RUN_PENDING);
ret = -EINVAL;
if (nested_cpu_has_shadow_vmcs(vmcs12) &&
vmcs12->vmcs_link_pointer != -1ull) {
struct vmcs12 *shadow_vmcs12 = get_shadow_vmcs12(vcpu);
if (kvm_state->size < sizeof(*kvm_state) + 2 * sizeof(*vmcs12))
return -EINVAL;
if (kvm_state->size < sizeof(*kvm_state) + VMCS12_SIZE + sizeof(*vmcs12))
goto error_guest_mode;
if (copy_from_user(shadow_vmcs12,
user_kvm_nested_state->data + VMCS12_SIZE,
sizeof(*vmcs12)))
return -EFAULT;
sizeof(*vmcs12))) {
ret = -EFAULT;
goto error_guest_mode;
}
if (shadow_vmcs12->hdr.revision_id != VMCS12_REVISION ||
!shadow_vmcs12->hdr.shadow_vmcs)
return -EINVAL;
goto error_guest_mode;
}
if (nested_vmx_check_controls(vcpu, vmcs12) ||
nested_vmx_check_host_state(vcpu, vmcs12) ||
nested_vmx_check_guest_state(vcpu, vmcs12, &exit_qual))
return -EINVAL;
goto error_guest_mode;
vmx->nested.dirty_vmcs12 = true;
vmx->nested.nested_run_pending =
!!(kvm_state->flags & KVM_STATE_NESTED_RUN_PENDING);
ret = nested_vmx_enter_non_root_mode(vcpu, false);
if (ret) {
vmx->nested.nested_run_pending = 0;
return -EINVAL;
}
if (ret)
goto error_guest_mode;
return 0;
error_guest_mode:
vmx->nested.nested_run_pending = 0;
return ret;
}
void nested_vmx_vcpu_setup(void)

26
arch/x86/kvm/vmx/pmu_intel.c
View File

@ -126,7 +126,7 @@ static int intel_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx)
}
static struct kvm_pmc *intel_msr_idx_to_pmc(struct kvm_vcpu *vcpu,
unsigned idx)
unsigned idx, u64 *mask)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
bool fixed = idx & (1u << 30);
@ -138,6 +138,7 @@ static struct kvm_pmc *intel_msr_idx_to_pmc(struct kvm_vcpu *vcpu,
if (fixed && idx >= pmu->nr_arch_fixed_counters)
return NULL;
counters = fixed ? pmu->fixed_counters : pmu->gp_counters;
*mask &= pmu->counter_bitmask[fixed ? KVM_PMC_FIXED : KVM_PMC_GP];
return &counters[idx];
}
@ -183,9 +184,13 @@ static int intel_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data)
*data = pmu->global_ovf_ctrl;
return 0;
default:
if ((pmc = get_gp_pmc(pmu, msr, MSR_IA32_PERFCTR0)) ||
(pmc = get_fixed_pmc(pmu, msr))) {
*data = pmc_read_counter(pmc);
if ((pmc = get_gp_pmc(pmu, msr, MSR_IA32_PERFCTR0))) {
u64 val = pmc_read_counter(pmc);
*data = val & pmu->counter_bitmask[KVM_PMC_GP];
return 0;
} else if ((pmc = get_fixed_pmc(pmu, msr))) {
u64 val = pmc_read_counter(pmc);
*data = val & pmu->counter_bitmask[KVM_PMC_FIXED];
return 0;
} else if ((pmc = get_gp_pmc(pmu, msr, MSR_P6_EVNTSEL0))) {
*data = pmc->eventsel;
@ -235,11 +240,14 @@ static int intel_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
}
break;
default:
if ((pmc = get_gp_pmc(pmu, msr, MSR_IA32_PERFCTR0)) ||
(pmc = get_fixed_pmc(pmu, msr))) {
if (!msr_info->host_initiated)
data = (s64)(s32)data;
pmc->counter += data - pmc_read_counter(pmc);
if ((pmc = get_gp_pmc(pmu, msr, MSR_IA32_PERFCTR0))) {
if (msr_info->host_initiated)
pmc->counter = data;
else
pmc->counter = (s32)data;
return 0;
} else if ((pmc = get_fixed_pmc(pmu, msr))) {
pmc->counter = data;
return 0;
} else if ((pmc = get_gp_pmc(pmu, msr, MSR_P6_EVNTSEL0))) {
if (data == pmc->eventsel)

26
arch/x86/kvm/vmx/vmx.c
View File

@ -114,6 +114,9 @@ static u64 __read_mostly host_xss;
bool __read_mostly enable_pml = 1;
module_param_named(pml, enable_pml, bool, S_IRUGO);
static bool __read_mostly dump_invalid_vmcs = 0;
module_param(dump_invalid_vmcs, bool, 0644);
#define MSR_BITMAP_MODE_X2APIC 1
#define MSR_BITMAP_MODE_X2APIC_APICV 2
@ -5607,15 +5610,24 @@ static void vmx_dump_dtsel(char *name, uint32_t limit)
void dump_vmcs(void)
{
u32 vmentry_ctl = vmcs_read32(VM_ENTRY_CONTROLS);
u32 vmexit_ctl = vmcs_read32(VM_EXIT_CONTROLS);
u32 cpu_based_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
u32 pin_based_exec_ctrl = vmcs_read32(PIN_BASED_VM_EXEC_CONTROL);
u32 secondary_exec_control = 0;
unsigned long cr4 = vmcs_readl(GUEST_CR4);
u64 efer = vmcs_read64(GUEST_IA32_EFER);
u32 vmentry_ctl, vmexit_ctl;
u32 cpu_based_exec_ctrl, pin_based_exec_ctrl, secondary_exec_control;
unsigned long cr4;
u64 efer;
int i, n;
if (!dump_invalid_vmcs) {
pr_warn_ratelimited("set kvm_intel.dump_invalid_vmcs=1 to dump internal KVM state.\n");
return;
}
vmentry_ctl = vmcs_read32(VM_ENTRY_CONTROLS);
vmexit_ctl = vmcs_read32(VM_EXIT_CONTROLS);
cpu_based_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
pin_based_exec_ctrl = vmcs_read32(PIN_BASED_VM_EXEC_CONTROL);
cr4 = vmcs_readl(GUEST_CR4);
efer = vmcs_read64(GUEST_IA32_EFER);
secondary_exec_control = 0;
if (cpu_has_secondary_exec_ctrls())
secondary_exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);

1
arch/x86/kvm/vmx/vmx.h
View File

@ -319,6 +319,7 @@ void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked);
void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu);
struct shared_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr);
void pt_update_intercept_for_msr(struct vcpu_vmx *vmx);
void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp);
#define POSTED_INTR_ON 0
#define POSTED_INTR_SN 1

4
arch/x86/kvm/x86.c
View File

@ -143,7 +143,7 @@ module_param(tsc_tolerance_ppm, uint, S_IRUGO | S_IWUSR);
* tuning, i.e. allows priveleged userspace to set an exact advancement time.
*/
static int __read_mostly lapic_timer_advance_ns = -1;
module_param(lapic_timer_advance_ns, uint, S_IRUGO | S_IWUSR);
module_param(lapic_timer_advance_ns, int, S_IRUGO | S_IWUSR);
static bool __read_mostly vector_hashing = true;
module_param(vector_hashing, bool, S_IRUGO);
@ -1298,7 +1298,7 @@ static int set_efer(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
u64 efer = msr_info->data;
if (efer & efer_reserved_bits)
return false;
return 1;
if (!msr_info->host_initiated) {
if (!__kvm_valid_efer(vcpu, efer))

16
tools/kvm/kvm_stat/kvm_stat
View File

@ -575,8 +575,12 @@ class TracepointProvider(Provider):
def update_fields(self, fields_filter):
"""Refresh fields, applying fields_filter"""
self.fields = [field for field in self._get_available_fields()
if self.is_field_wanted(fields_filter, field) or
ARCH.tracepoint_is_child(field)]
if self.is_field_wanted(fields_filter, field)]
# add parents for child fields - otherwise we won't see any output!
for field in self._fields:
parent = ARCH.tracepoint_is_child(field)
if (parent and parent not in self._fields):
self.fields.append(parent)
@staticmethod
def _get_online_cpus():
@ -735,8 +739,12 @@ class DebugfsProvider(Provider):
def update_fields(self, fields_filter):
"""Refresh fields, applying fields_filter"""
self._fields = [field for field in self._get_available_fields()
if self.is_field_wanted(fields_filter, field) or
ARCH.debugfs_is_child(field)]
if self.is_field_wanted(fields_filter, field)]
# add parents for child fields - otherwise we won't see any output!
for field in self._fields:
parent = ARCH.debugfs_is_child(field)
if (parent and parent not in self._fields):
self.fields.append(parent)
@property
def fields(self):

2
tools/kvm/kvm_stat/kvm_stat.txt
View File

@ -34,6 +34,8 @@ INTERACTIVE COMMANDS
*c*:: clear filter
*f*:: filter by regular expression
:: *Note*: Child events pull in their parents, and parents' stats summarize
all child events, not just the filtered ones
*g*:: filter by guest name/PID

4
tools/testing/selftests/kvm/Makefile
View File

@ -35,7 +35,9 @@ LIBKVM += $(LIBKVM_$(UNAME_M))
INSTALL_HDR_PATH = $(top_srcdir)/usr
LINUX_HDR_PATH = $(INSTALL_HDR_PATH)/include/
LINUX_TOOL_INCLUDE = $(top_srcdir)/tools/include
CFLAGS += -O2 -g -std=gnu99 -fno-stack-protector -fno-PIE -I$(LINUX_TOOL_INCLUDE) -I$(LINUX_HDR_PATH) -Iinclude -I$(<D) -Iinclude/$(UNAME_M) -I..
CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \
-fno-stack-protector -fno-PIE -I$(LINUX_TOOL_INCLUDE) \
-I$(LINUX_HDR_PATH) -Iinclude -I$(<D) -Iinclude/$(UNAME_M) -I..
no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \
$(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)

8
tools/testing/selftests/kvm/dirty_log_test.c
View File

@ -131,6 +131,7 @@ static void *vcpu_worker(void *data)
while (!READ_ONCE(host_quit)) {
/* Let the guest dirty the random pages */
ret = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(ret == 0, "vcpu_run failed: %d\n", ret);
if (get_ucall(vm, VCPU_ID, &uc) == UCALL_SYNC) {
pages_count += TEST_PAGES_PER_LOOP;
generate_random_array(guest_array, TEST_PAGES_PER_LOOP);
@ -292,7 +293,7 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations,
* A little more than 1G of guest page sized pages. Cover the
* case where the size is not aligned to 64 pages.
*/
guest_num_pages = (1ul << (30 - guest_page_shift)) + 3;
guest_num_pages = (1ul << (30 - guest_page_shift)) + 16;
host_page_size = getpagesize();
host_num_pages = (guest_num_pages * guest_page_size) / host_page_size +
!!((guest_num_pages * guest_page_size) % host_page_size);
@ -426,8 +427,11 @@ int main(int argc, char *argv[])
unsigned long interval = TEST_HOST_LOOP_INTERVAL;
bool mode_selected = false;
uint64_t phys_offset = 0;
unsigned int mode, host_ipa_limit;
unsigned int mode;
int opt, i;
#ifdef __aarch64__
unsigned int host_ipa_limit;
#endif
#ifdef USE_CLEAR_DIRTY_LOG
if (!kvm_check_cap(KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2)) {

2
tools/testing/selftests/kvm/include/kvm_util.h
View File

@ -118,10 +118,12 @@ void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_vcpu_events *events);
void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_vcpu_events *events);
#ifdef __x86_64__
void vcpu_nested_state_get(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_nested_state *state);
int vcpu_nested_state_set(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_nested_state *state, bool ignore_error);
#endif
const char *exit_reason_str(unsigned int exit_reason);

11
tools/testing/selftests/kvm/lib/aarch64/processor.c
View File

@ -7,6 +7,8 @@
#define _GNU_SOURCE /* for program_invocation_name */
#include <linux/compiler.h>
#include "kvm_util.h"
#include "../kvm_util_internal.h"
#include "processor.h"
@ -67,15 +69,13 @@ static uint64_t ptrs_per_pgd(struct kvm_vm *vm)
return 1 << (vm->va_bits - shift);
}
static uint64_t ptrs_per_pte(struct kvm_vm *vm)
static uint64_t __maybe_unused ptrs_per_pte(struct kvm_vm *vm)
{
return 1 << (vm->page_shift - 3);
}
void virt_pgd_alloc(struct kvm_vm *vm, uint32_t pgd_memslot)
{
int rc;
if (!vm->pgd_created) {
vm_paddr_t paddr = vm_phy_pages_alloc(vm,
page_align(vm, ptrs_per_pgd(vm) * 8) / vm->page_size,
@ -181,6 +181,7 @@ vm_paddr_t addr_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva)
unmapped_gva:
TEST_ASSERT(false, "No mapping for vm virtual address, "
"gva: 0x%lx", gva);
exit(1);
}
static void pte_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent, uint64_t page, int level)
@ -226,7 +227,7 @@ struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages,
uint64_t extra_pg_pages = (extra_mem_pages / ptrs_per_4k_pte) * 2;
struct kvm_vm *vm;
vm = vm_create(VM_MODE_P52V48_4K, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR);
vm = vm_create(VM_MODE_P40V48_4K, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR);
kvm_vm_elf_load(vm, program_invocation_name, 0, 0);
vm_vcpu_add_default(vm, vcpuid, guest_code);
@ -312,6 +313,6 @@ void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, uint8_t indent)
get_reg(vm, vcpuid, ARM64_CORE_REG(regs.pstate), &pstate);
get_reg(vm, vcpuid, ARM64_CORE_REG(regs.pc), &pc);
fprintf(stream, "%*spstate: 0x%.16llx pc: 0x%.16llx\n",
fprintf(stream, "%*spstate: 0x%.16lx pc: 0x%.16lx\n",
indent, "", pstate, pc);
}

5
tools/testing/selftests/kvm/lib/kvm_util.c
View File

@ -135,7 +135,6 @@ struct kvm_vm *_vm_create(enum vm_guest_mode mode, uint64_t phy_pages,
int perm, unsigned long type)
{
struct kvm_vm *vm;
int kvm_fd;
vm = calloc(1, sizeof(*vm));
TEST_ASSERT(vm != NULL, "Insufficient Memory");
@ -556,7 +555,6 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
uint32_t flags)
{
int ret;
unsigned long pmem_size = 0;
struct userspace_mem_region *region;
size_t huge_page_size = KVM_UTIL_PGS_PER_HUGEPG * vm->page_size;
@ -1250,6 +1248,7 @@ void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid,
ret, errno);
}
#ifdef __x86_64__
void vcpu_nested_state_get(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_nested_state *state)
{
@ -1281,6 +1280,7 @@ int vcpu_nested_state_set(struct kvm_vm *vm, uint32_t vcpuid,
return ret;
}
#endif
/*
* VM VCPU System Regs Get
@ -1334,7 +1334,6 @@ void vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_sregs *sregs)
int _vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_sregs *sregs)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
int ret;
TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid);

2
tools/testing/selftests/kvm/lib/ucall.c
View File

@ -142,7 +142,7 @@ uint64_t get_ucall(struct kvm_vm *vm, uint32_t vcpu_id, struct ucall *uc)
vm_vaddr_t gva;
TEST_ASSERT(run->mmio.is_write && run->mmio.len == 8,
"Unexpected ucall exit mmio address access");
gva = *(vm_vaddr_t *)run->mmio.data;
memcpy(&gva, run->mmio.data, sizeof(gva));
memcpy(uc, addr_gva2hva(vm, gva), sizeof(*uc));
}

4
tools/testing/selftests/kvm/lib/x86_64/processor.c
View File

@ -229,8 +229,6 @@ void sregs_dump(FILE *stream, struct kvm_sregs *sregs,
void virt_pgd_alloc(struct kvm_vm *vm, uint32_t pgd_memslot)
{
int rc;
TEST_ASSERT(vm->mode == VM_MODE_P52V48_4K, "Attempt to use "
"unknown or unsupported guest mode, mode: 0x%x", vm->mode);
@ -549,7 +547,6 @@ vm_paddr_t addr_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva)
struct pageDirectoryPointerEntry *pdpe;
struct pageDirectoryEntry *pde;
struct pageTableEntry *pte;
void *hva;
TEST_ASSERT(vm->mode == VM_MODE_P52V48_4K, "Attempt to use "
"unknown or unsupported guest mode, mode: 0x%x", vm->mode);
@ -582,6 +579,7 @@ vm_paddr_t addr_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva)
unmapped_gva:
TEST_ASSERT(false, "No mapping for vm virtual address, "
"gva: 0x%lx", gva);
exit(EXIT_FAILURE);
}
static void kvm_setup_gdt(struct kvm_vm *vm, struct kvm_dtable *dt, int gdt_memslot,

1
tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c
View File

@ -87,6 +87,7 @@ int main(int argc, char *argv[])
while (1) {
rc = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(rc == 0, "vcpu_run failed: %d\n", rc);
TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
"Unexpected exit reason: %u (%s),\n",
run->exit_reason,

7
tools/testing/selftests/kvm/x86_64/evmcs_test.c
View File

@ -19,8 +19,6 @@
#define VCPU_ID 5
static bool have_nested_state;
void l2_guest_code(void)
{
GUEST_SYNC(6);
@ -73,7 +71,6 @@ void guest_code(struct vmx_pages *vmx_pages)
int main(int argc, char *argv[])
{
struct vmx_pages *vmx_pages = NULL;
vm_vaddr_t vmx_pages_gva = 0;
struct kvm_regs regs1, regs2;
@ -88,8 +85,6 @@ int main(int argc, char *argv[])
.args[0] = (unsigned long)&evmcs_ver
};
struct kvm_cpuid_entry2 *entry = kvm_get_supported_cpuid_entry(1);
/* Create VM */
vm = vm_create_default(VCPU_ID, 0, guest_code);
@ -113,7 +108,7 @@ int main(int argc, char *argv[])
vcpu_regs_get(vm, VCPU_ID, &regs1);
vmx_pages = vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_args_set(vm, VCPU_ID, 1, vmx_pages_gva);
for (stage = 1;; stage++) {

9
tools/testing/selftests/kvm/x86_64/hyperv_cpuid.c
View File

@ -52,15 +52,11 @@ static void test_hv_cpuid(struct kvm_cpuid2 *hv_cpuid_entries,
TEST_ASSERT(entry->index == 0,
".index field should be zero");
TEST_ASSERT(entry->index == 0,
".index field should be zero");
TEST_ASSERT(entry->flags == 0,
".flags field should be zero");
TEST_ASSERT(entry->padding[0] == entry->padding[1]
== entry->padding[2] == 0,
".index field should be zero");
TEST_ASSERT(!entry->padding[0] && !entry->padding[1] &&
!entry->padding[2], "padding should be zero");
/*
* If needed for debug:
@ -90,7 +86,6 @@ struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(struct kvm_vm *vm)
{
int nent = 20; /* should be enough */
static struct kvm_cpuid2 *cpuid;
int ret;
cpuid = malloc(sizeof(*cpuid) + nent * sizeof(struct kvm_cpuid_entry2));

1
tools/testing/selftests/kvm/x86_64/platform_info_test.c
View File

@ -81,7 +81,6 @@ static void test_msr_platform_info_disabled(struct kvm_vm *vm)
int main(int argc, char *argv[])
{
struct kvm_vm *vm;
struct kvm_run *state;
int rv;
uint64_t msr_platform_info;

3
tools/testing/selftests/kvm/x86_64/smm_test.c
View File

@ -87,7 +87,6 @@ void guest_code(struct vmx_pages *vmx_pages)
int main(int argc, char *argv[])
{
struct vmx_pages *vmx_pages = NULL;
vm_vaddr_t vmx_pages_gva = 0;
struct kvm_regs regs;
@ -115,7 +114,7 @@ int main(int argc, char *argv[])
vcpu_set_msr(vm, VCPU_ID, MSR_IA32_SMBASE, SMRAM_GPA);
if (kvm_check_cap(KVM_CAP_NESTED_STATE)) {
vmx_pages = vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_args_set(vm, VCPU_ID, 1, vmx_pages_gva);
} else {
printf("will skip SMM test with VMX enabled\n");

7
tools/testing/selftests/kvm/x86_64/state_test.c
View File

@ -22,8 +22,6 @@
#define VCPU_ID 5
static bool have_nested_state;
void l2_guest_code(void)
{
GUEST_SYNC(6);
@ -122,7 +120,6 @@ void guest_code(struct vmx_pages *vmx_pages)
int main(int argc, char *argv[])
{
struct vmx_pages *vmx_pages = NULL;
vm_vaddr_t vmx_pages_gva = 0;
struct kvm_regs regs1, regs2;
@ -132,8 +129,6 @@ int main(int argc, char *argv[])
struct ucall uc;
int stage;
struct kvm_cpuid_entry2 *entry = kvm_get_supported_cpuid_entry(1);
/* Create VM */
vm = vm_create_default(VCPU_ID, 0, guest_code);
vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid());
@ -142,7 +137,7 @@ int main(int argc, char *argv[])
vcpu_regs_get(vm, VCPU_ID, &regs1);
if (kvm_check_cap(KVM_CAP_NESTED_STATE)) {
vmx_pages = vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_args_set(vm, VCPU_ID, 1, vmx_pages_gva);
} else {
printf("will skip nested state checks\n");

54
tools/testing/selftests/kvm/x86_64/sync_regs_test.c
View File

@ -25,9 +25,15 @@
void guest_code(void)
{
/*
* use a callee-save register, otherwise the compiler
* saves it around the call to GUEST_SYNC.
*/
register u32 stage asm("rbx");
for (;;) {
GUEST_SYNC(0);
asm volatile ("inc %r11");
stage++;
asm volatile ("" : : "r" (stage));
}
}
@ -147,7 +153,7 @@ int main(int argc, char *argv[])
compare_vcpu_events(&events, &run->s.regs.events);
/* Set and verify various register values. */
run->s.regs.regs.r11 = 0xBAD1DEA;
run->s.regs.regs.rbx = 0xBAD1DEA;
run->s.regs.sregs.apic_base = 1 << 11;
/* TODO run->s.regs.events.XYZ = ABC; */
@ -158,9 +164,9 @@ int main(int argc, char *argv[])
"Unexpected exit reason: %u (%s),\n",
run->exit_reason,
exit_reason_str(run->exit_reason));
TEST_ASSERT(run->s.regs.regs.r11 == 0xBAD1DEA + 1,
"r11 sync regs value incorrect 0x%llx.",
run->s.regs.regs.r11);
TEST_ASSERT(run->s.regs.regs.rbx == 0xBAD1DEA + 1,
"rbx sync regs value incorrect 0x%llx.",
run->s.regs.regs.rbx);
TEST_ASSERT(run->s.regs.sregs.apic_base == 1 << 11,
"apic_base sync regs value incorrect 0x%llx.",
run->s.regs.sregs.apic_base);
@ -179,15 +185,15 @@ int main(int argc, char *argv[])
*/
run->kvm_valid_regs = TEST_SYNC_FIELDS;
run->kvm_dirty_regs = 0;
run->s.regs.regs.r11 = 0xDEADBEEF;
run->s.regs.regs.rbx = 0xDEADBEEF;
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
"Unexpected exit reason: %u (%s),\n",
run->exit_reason,
exit_reason_str(run->exit_reason));
TEST_ASSERT(run->s.regs.regs.r11 != 0xDEADBEEF,
"r11 sync regs value incorrect 0x%llx.",
run->s.regs.regs.r11);
TEST_ASSERT(run->s.regs.regs.rbx != 0xDEADBEEF,
"rbx sync regs value incorrect 0x%llx.",
run->s.regs.regs.rbx);
/* Clear kvm_valid_regs bits and kvm_dirty_bits.
* Verify s.regs values are not overwritten with existing guest values
@ -195,21 +201,21 @@ int main(int argc, char *argv[])
*/
run->kvm_valid_regs = 0;
run->kvm_dirty_regs = 0;
run->s.regs.regs.r11 = 0xAAAA;
regs.r11 = 0xBAC0;
run->s.regs.regs.rbx = 0xAAAA;
regs.rbx = 0xBAC0;
vcpu_regs_set(vm, VCPU_ID, &regs);
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
"Unexpected exit reason: %u (%s),\n",
run->exit_reason,
exit_reason_str(run->exit_reason));
TEST_ASSERT(run->s.regs.regs.r11 == 0xAAAA,
"r11 sync regs value incorrect 0x%llx.",
run->s.regs.regs.r11);
TEST_ASSERT(run->s.regs.regs.rbx == 0xAAAA,
"rbx sync regs value incorrect 0x%llx.",
run->s.regs.regs.rbx);
vcpu_regs_get(vm, VCPU_ID, &regs);
TEST_ASSERT(regs.r11 == 0xBAC0 + 1,
"r11 guest value incorrect 0x%llx.",
regs.r11);
TEST_ASSERT(regs.rbx == 0xBAC0 + 1,
"rbx guest value incorrect 0x%llx.",
regs.rbx);
/* Clear kvm_valid_regs bits. Verify s.regs values are not overwritten
* with existing guest values but that guest values are overwritten
@ -217,19 +223,19 @@ int main(int argc, char *argv[])
*/
run->kvm_valid_regs = 0;
run->kvm_dirty_regs = TEST_SYNC_FIELDS;
run->s.regs.regs.r11 = 0xBBBB;
run->s.regs.regs.rbx = 0xBBBB;
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
"Unexpected exit reason: %u (%s),\n",
run->exit_reason,
exit_reason_str(run->exit_reason));
TEST_ASSERT(run->s.regs.regs.r11 == 0xBBBB,
"r11 sync regs value incorrect 0x%llx.",
run->s.regs.regs.r11);
TEST_ASSERT(run->s.regs.regs.rbx == 0xBBBB,
"rbx sync regs value incorrect 0x%llx.",
run->s.regs.regs.rbx);
vcpu_regs_get(vm, VCPU_ID, &regs);
TEST_ASSERT(regs.r11 == 0xBBBB + 1,
"r11 guest value incorrect 0x%llx.",
regs.r11);
TEST_ASSERT(regs.rbx == 0xBBBB + 1,
"rbx guest value incorrect 0x%llx.",
regs.rbx);
kvm_vm_free(vm);

5
tools/testing/selftests/kvm/x86_64/vmx_close_while_nested_test.c
View File

@ -39,8 +39,6 @@ static void l1_guest_code(struct vmx_pages *vmx_pages)
{
#define L2_GUEST_STACK_SIZE 64
unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE];
uint32_t control;
uintptr_t save_cr3;
GUEST_ASSERT(prepare_for_vmx_operation(vmx_pages));
GUEST_ASSERT(load_vmcs(vmx_pages));
@ -55,7 +53,6 @@ static void l1_guest_code(struct vmx_pages *vmx_pages)
int main(int argc, char *argv[])
{
struct vmx_pages *vmx_pages;
vm_vaddr_t vmx_pages_gva;
struct kvm_cpuid_entry2 *entry = kvm_get_supported_cpuid_entry(1);
@ -68,7 +65,7 @@ int main(int argc, char *argv[])
vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid());
/* Allocate VMX pages and shared descriptors (vmx_pages). */
vmx_pages = vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_args_set(vm, VCPU_ID, 1, vmx_pages_gva);
for (;;) {

2
tools/testing/selftests/kvm/x86_64/vmx_set_nested_state_test.c
View File

@ -75,7 +75,7 @@ void set_revision_id_for_vmcs12(struct kvm_nested_state *state,
u32 vmcs12_revision)
{
/* Set revision_id in vmcs12 to vmcs12_revision. */
*(u32 *)(state->data) = vmcs12_revision;
memcpy(state->data, &vmcs12_revision, sizeof(u32));
}
void set_default_state(struct kvm_nested_state *state)

5
tools/testing/selftests/kvm/x86_64/vmx_tsc_adjust_test.c
View File

@ -121,7 +121,7 @@ static void l1_guest_code(struct vmx_pages *vmx_pages)
GUEST_DONE();
}
void report(int64_t val)
static void report(int64_t val)
{
printf("IA32_TSC_ADJUST is %ld (%lld * TSC_ADJUST_VALUE + %lld).\n",
val, val / TSC_ADJUST_VALUE, val % TSC_ADJUST_VALUE);
@ -129,7 +129,6 @@ void report(int64_t val)
int main(int argc, char *argv[])
{
struct vmx_pages *vmx_pages;
vm_vaddr_t vmx_pages_gva;
struct kvm_cpuid_entry2 *entry = kvm_get_supported_cpuid_entry(1);
@ -142,7 +141,7 @@ int main(int argc, char *argv[])
vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid());
/* Allocate VMX pages and shared descriptors (vmx_pages). */
vmx_pages = vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_args_set(vm, VCPU_ID, 1, vmx_pages_gva);
for (;;) {

121
virt/kvm/arm/aarch32.c
View File

@ -25,127 +25,6 @@
#include <asm/kvm_emulate.h>
#include <asm/kvm_hyp.h>
/*
* stolen from arch/arm/kernel/opcodes.c
*
* condition code lookup table
* index into the table is test code: EQ, NE, ... LT, GT, AL, NV
*
* bit position in short is condition code: NZCV
*/
static const unsigned short cc_map[16] = {
0xF0F0, /* EQ == Z set */
0x0F0F, /* NE */
0xCCCC, /* CS == C set */
0x3333, /* CC */
0xFF00, /* MI == N set */
0x00FF, /* PL */
0xAAAA, /* VS == V set */
0x5555, /* VC */
0x0C0C, /* HI == C set && Z clear */
0xF3F3, /* LS == C clear || Z set */
0xAA55, /* GE == (N==V) */
0x55AA, /* LT == (N!=V) */
0x0A05, /* GT == (!Z && (N==V)) */
0xF5FA, /* LE == (Z || (N!=V)) */
0xFFFF, /* AL always */
0 /* NV */
};
/*
* Check if a trapped instruction should have been executed or not.
*/
bool __hyp_text kvm_condition_valid32(const struct kvm_vcpu *vcpu)
{
unsigned long cpsr;
u32 cpsr_cond;
int cond;
/* Top two bits non-zero? Unconditional. */
if (kvm_vcpu_get_hsr(vcpu) >> 30)
return true;
/* Is condition field valid? */
cond = kvm_vcpu_get_condition(vcpu);
if (cond == 0xE)
return true;
cpsr = *vcpu_cpsr(vcpu);
if (cond < 0) {
/* This can happen in Thumb mode: examine IT state. */
unsigned long it;
it = ((cpsr >> 8) & 0xFC) | ((cpsr >> 25) & 0x3);
/* it == 0 => unconditional. */
if (it == 0)
return true;
/* The cond for this insn works out as the top 4 bits. */
cond = (it >> 4);
}
cpsr_cond = cpsr >> 28;
if (!((cc_map[cond] >> cpsr_cond) & 1))
return false;
return true;
}
/**
* adjust_itstate - adjust ITSTATE when emulating instructions in IT-block
* @vcpu: The VCPU pointer
*
* When exceptions occur while instructions are executed in Thumb IF-THEN
* blocks, the ITSTATE field of the CPSR is not advanced (updated), so we have
* to do this little bit of work manually. The fields map like this:
*
* IT[7:0] -> CPSR[26:25],CPSR[15:10]
*/
static void __hyp_text kvm_adjust_itstate(struct kvm_vcpu *vcpu)
{
unsigned long itbits, cond;
unsigned long cpsr = *vcpu_cpsr(vcpu);
bool is_arm = !(cpsr & PSR_AA32_T_BIT);
if (is_arm || !(cpsr & PSR_AA32_IT_MASK))
return;
cond = (cpsr & 0xe000) >> 13;
itbits = (cpsr & 0x1c00) >> (10 - 2);
itbits |= (cpsr & (0x3 << 25)) >> 25;
/* Perform ITAdvance (see page A2-52 in ARM DDI 0406C) */
if ((itbits & 0x7) == 0)
itbits = cond = 0;
else
itbits = (itbits << 1) & 0x1f;
cpsr &= ~PSR_AA32_IT_MASK;
cpsr |= cond << 13;
cpsr |= (itbits & 0x1c) << (10 - 2);
cpsr |= (itbits & 0x3) << 25;
*vcpu_cpsr(vcpu) = cpsr;
}
/**
* kvm_skip_instr - skip a trapped instruction and proceed to the next
* @vcpu: The vcpu pointer
*/
void __hyp_text kvm_skip_instr32(struct kvm_vcpu *vcpu, bool is_wide_instr)
{
bool is_thumb;
is_thumb = !!(*vcpu_cpsr(vcpu) & PSR_AA32_T_BIT);
if (is_thumb && !is_wide_instr)
*vcpu_pc(vcpu) += 2;
else
*vcpu_pc(vcpu) += 4;
kvm_adjust_itstate(vcpu);
}
/*
* Table taken from ARMv8 ARM DDI0487B-B, table G1-10.
*/

136
virt/kvm/arm/hyp/aarch32.c Normal file
View File

@ -0,0 +1,136 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Hyp portion of the (not much of an) Emulation layer for 32bit guests.
*
* Copyright (C) 2012,2013 - ARM Ltd
* Author: Marc Zyngier <marc.zyngier@arm.com>
*
* based on arch/arm/kvm/emulate.c
* Copyright (C) 2012 - Virtual Open Systems and Columbia University
* Author: Christoffer Dall <c.dall@virtualopensystems.com>
*/
#include <linux/kvm_host.h>
#include <asm/kvm_emulate.h>
#include <asm/kvm_hyp.h>
/*
* stolen from arch/arm/kernel/opcodes.c
*
* condition code lookup table
* index into the table is test code: EQ, NE, ... LT, GT, AL, NV
*
* bit position in short is condition code: NZCV
*/
static const unsigned short cc_map[16] = {
0xF0F0, /* EQ == Z set */
0x0F0F, /* NE */
0xCCCC, /* CS == C set */
0x3333, /* CC */
0xFF00, /* MI == N set */
0x00FF, /* PL */
0xAAAA, /* VS == V set */
0x5555, /* VC */
0x0C0C, /* HI == C set && Z clear */
0xF3F3, /* LS == C clear || Z set */
0xAA55, /* GE == (N==V) */
0x55AA, /* LT == (N!=V) */
0x0A05, /* GT == (!Z && (N==V)) */
0xF5FA, /* LE == (Z || (N!=V)) */
0xFFFF, /* AL always */
0 /* NV */
};
/*
* Check if a trapped instruction should have been executed or not.
*/
bool __hyp_text kvm_condition_valid32(const struct kvm_vcpu *vcpu)
{
unsigned long cpsr;
u32 cpsr_cond;
int cond;
/* Top two bits non-zero? Unconditional. */
if (kvm_vcpu_get_hsr(vcpu) >> 30)
return true;
/* Is condition field valid? */
cond = kvm_vcpu_get_condition(vcpu);
if (cond == 0xE)
return true;
cpsr = *vcpu_cpsr(vcpu);
if (cond < 0) {
/* This can happen in Thumb mode: examine IT state. */
unsigned long it;
it = ((cpsr >> 8) & 0xFC) | ((cpsr >> 25) & 0x3);
/* it == 0 => unconditional. */
if (it == 0)
return true;
/* The cond for this insn works out as the top 4 bits. */
cond = (it >> 4);
}
cpsr_cond = cpsr >> 28;
if (!((cc_map[cond] >> cpsr_cond) & 1))
return false;
return true;
}
/**
* adjust_itstate - adjust ITSTATE when emulating instructions in IT-block
* @vcpu: The VCPU pointer
*
* When exceptions occur while instructions are executed in Thumb IF-THEN
* blocks, the ITSTATE field of the CPSR is not advanced (updated), so we have
* to do this little bit of work manually. The fields map like this:
*
* IT[7:0] -> CPSR[26:25],CPSR[15:10]
*/
static void __hyp_text kvm_adjust_itstate(struct kvm_vcpu *vcpu)
{
unsigned long itbits, cond;
unsigned long cpsr = *vcpu_cpsr(vcpu);
bool is_arm = !(cpsr & PSR_AA32_T_BIT);
if (is_arm || !(cpsr & PSR_AA32_IT_MASK))
return;
cond = (cpsr & 0xe000) >> 13;
itbits = (cpsr & 0x1c00) >> (10 - 2);
itbits |= (cpsr & (0x3 << 25)) >> 25;
/* Perform ITAdvance (see page A2-52 in ARM DDI 0406C) */
if ((itbits & 0x7) == 0)
itbits = cond = 0;
else
itbits = (itbits << 1) & 0x1f;
cpsr &= ~PSR_AA32_IT_MASK;
cpsr |= cond << 13;
cpsr |= (itbits & 0x1c) << (10 - 2);
cpsr |= (itbits & 0x3) << 25;
*vcpu_cpsr(vcpu) = cpsr;
}
/**
* kvm_skip_instr - skip a trapped instruction and proceed to the next
* @vcpu: The vcpu pointer
*/
void __hyp_text kvm_skip_instr32(struct kvm_vcpu *vcpu, bool is_wide_instr)
{
bool is_thumb;
is_thumb = !!(*vcpu_cpsr(vcpu) & PSR_AA32_T_BIT);
if (is_thumb && !is_wide_instr)
*vcpu_pc(vcpu) += 2;
else
*vcpu_pc(vcpu) += 4;
kvm_adjust_itstate(vcpu);
}

9
virt/kvm/eventfd.c
View File

@ -44,6 +44,12 @@
static struct workqueue_struct *irqfd_cleanup_wq;
bool __attribute__((weak))
kvm_arch_irqfd_allowed(struct kvm *kvm, struct kvm_irqfd *args)
{
return true;
}
static void
irqfd_inject(struct work_struct *work)
{
@ -297,6 +303,9 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)
if (!kvm_arch_intc_initialized(kvm))
return -EAGAIN;
if (!kvm_arch_irqfd_allowed(kvm, args))
return -EINVAL;
irqfd = kzalloc(sizeof(*irqfd), GFP_KERNEL_ACCOUNT);
if (!irqfd)
return -ENOMEM;

7
virt/kvm/kvm_main.c
View File

@ -52,6 +52,7 @@
#include <linux/sort.h>
#include <linux/bsearch.h>
#include <linux/io.h>
#include <linux/lockdep.h>
#include <asm/processor.h>
#include <asm/ioctl.h>
@ -1760,8 +1761,10 @@ static int __kvm_map_gfn(struct kvm_memory_slot *slot, gfn_t gfn,
if (pfn_valid(pfn)) {
page = pfn_to_page(pfn);
hva = kmap(page);
#ifdef CONFIG_HAS_IOMEM
} else {
hva = memremap(pfn_to_hpa(pfn), PAGE_SIZE, MEMREMAP_WB);
#endif
}
if (!hva)
@ -4181,7 +4184,9 @@ static int kvm_suspend(void)
static void kvm_resume(void)
{
if (kvm_usage_count) {
lockdep_assert_held(&kvm_count_lock);
#ifdef CONFIG_LOCKDEP
WARN_ON(lockdep_is_held(&kvm_count_lock));
#endif
hardware_enable_nolock(NULL);
}
}