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-rw-r--r--MAINTAINERS42
-rw-r--r--arch/arm64/kvm/arm.c6
-rw-r--r--arch/x86/kvm/svm/sev.c72
-rw-r--r--arch/x86/kvm/svm/svm.c11
-rw-r--r--arch/x86/kvm/svm/svm.h2
-rwxr-xr-xtools/kvm/kvm_stat/kvm_stat3
-rw-r--r--tools/testing/selftests/kvm/lib/aarch64/ucall.c9
7 files changed, 92 insertions, 53 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 6cc825857722..8e7e66cf8063 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10846,6 +10846,7 @@ M: Marc Zyngier <maz@kernel.org>
R: James Morse <james.morse@arm.com>
R: Alexandru Elisei <alexandru.elisei@arm.com>
R: Suzuki K Poulose <suzuki.poulose@arm.com>
+R: Oliver Upton <oliver.upton@linux.dev>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: kvmarm@lists.cs.columbia.edu (moderated for non-subscribers)
S: Maintained
@@ -10912,28 +10913,51 @@ F: tools/testing/selftests/kvm/*/s390x/
F: tools/testing/selftests/kvm/s390x/
KERNEL VIRTUAL MACHINE FOR X86 (KVM/x86)
+M: Sean Christopherson <seanjc@google.com>
M: Paolo Bonzini <pbonzini@redhat.com>
-R: Sean Christopherson <seanjc@google.com>
-R: Vitaly Kuznetsov <vkuznets@redhat.com>
-R: Wanpeng Li <wanpengli@tencent.com>
-R: Jim Mattson <jmattson@google.com>
-R: Joerg Roedel <joro@8bytes.org>
L: kvm@vger.kernel.org
S: Supported
-W: http://www.linux-kvm.org
T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
F: arch/x86/include/asm/kvm*
-F: arch/x86/include/asm/pvclock-abi.h
F: arch/x86/include/asm/svm.h
F: arch/x86/include/asm/vmx*.h
F: arch/x86/include/uapi/asm/kvm*
F: arch/x86/include/uapi/asm/svm.h
F: arch/x86/include/uapi/asm/vmx.h
-F: arch/x86/kernel/kvm.c
-F: arch/x86/kernel/kvmclock.c
F: arch/x86/kvm/
F: arch/x86/kvm/*/
+KVM PARAVIRT (KVM/paravirt)
+M: Paolo Bonzini <pbonzini@redhat.com>
+R: Wanpeng Li <wanpengli@tencent.com>
+R: Vitaly Kuznetsov <vkuznets@redhat.com>
+L: kvm@vger.kernel.org
+S: Supported
+T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
+F: arch/x86/kernel/kvm.c
+F: arch/x86/kernel/kvmclock.c
+F: arch/x86/include/asm/pvclock-abi.h
+F: include/linux/kvm_para.h
+F: include/uapi/linux/kvm_para.h
+F: include/uapi/asm-generic/kvm_para.h
+F: include/asm-generic/kvm_para.h
+F: arch/um/include/asm/kvm_para.h
+F: arch/x86/include/asm/kvm_para.h
+F: arch/x86/include/uapi/asm/kvm_para.h
+
+KVM X86 HYPER-V (KVM/hyper-v)
+M: Vitaly Kuznetsov <vkuznets@redhat.com>
+M: Sean Christopherson <seanjc@google.com>
+M: Paolo Bonzini <pbonzini@redhat.com>
+L: kvm@vger.kernel.org
+S: Supported
+T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
+F: arch/x86/kvm/hyperv.*
+F: arch/x86/kvm/kvm_onhyperv.*
+F: arch/x86/kvm/svm/hyperv.*
+F: arch/x86/kvm/svm/svm_onhyperv.*
+F: arch/x86/kvm/vmx/evmcs.*
+
KERNFS
M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
M: Tejun Heo <tj@kernel.org>
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index a0188144a122..83a7f61354d3 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -2112,11 +2112,11 @@ static int finalize_hyp_mode(void)
return 0;
/*
- * Exclude HYP BSS from kmemleak so that it doesn't get peeked
- * at, which would end badly once the section is inaccessible.
- * None of other sections should ever be introspected.
+ * Exclude HYP sections from kmemleak so that they don't get peeked
+ * at, which would end badly once inaccessible.
*/
kmemleak_free_part(__hyp_bss_start, __hyp_bss_end - __hyp_bss_start);
+ kmemleak_free_part(__va(hyp_mem_base), hyp_mem_size);
return pkvm_drop_host_privileges();
}
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 51fd985cf21d..0c240ed04f96 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -844,7 +844,7 @@ static int __sev_dbg_encrypt_user(struct kvm *kvm, unsigned long paddr,
/* If source buffer is not aligned then use an intermediate buffer */
if (!IS_ALIGNED((unsigned long)vaddr, 16)) {
- src_tpage = alloc_page(GFP_KERNEL);
+ src_tpage = alloc_page(GFP_KERNEL_ACCOUNT);
if (!src_tpage)
return -ENOMEM;
@@ -865,7 +865,7 @@ static int __sev_dbg_encrypt_user(struct kvm *kvm, unsigned long paddr,
if (!IS_ALIGNED((unsigned long)dst_vaddr, 16) || !IS_ALIGNED(size, 16)) {
int dst_offset;
- dst_tpage = alloc_page(GFP_KERNEL);
+ dst_tpage = alloc_page(GFP_KERNEL_ACCOUNT);
if (!dst_tpage) {
ret = -ENOMEM;
goto e_free;
@@ -1665,19 +1665,24 @@ static void sev_migrate_from(struct kvm *dst_kvm, struct kvm *src_kvm)
{
struct kvm_sev_info *dst = &to_kvm_svm(dst_kvm)->sev_info;
struct kvm_sev_info *src = &to_kvm_svm(src_kvm)->sev_info;
+ struct kvm_vcpu *dst_vcpu, *src_vcpu;
+ struct vcpu_svm *dst_svm, *src_svm;
struct kvm_sev_info *mirror;
+ unsigned long i;
dst->active = true;
dst->asid = src->asid;
dst->handle = src->handle;
dst->pages_locked = src->pages_locked;
dst->enc_context_owner = src->enc_context_owner;
+ dst->es_active = src->es_active;
src->asid = 0;
src->active = false;
src->handle = 0;
src->pages_locked = 0;
src->enc_context_owner = NULL;
+ src->es_active = false;
list_cut_before(&dst->regions_list, &src->regions_list, &src->regions_list);
@@ -1704,26 +1709,21 @@ static void sev_migrate_from(struct kvm *dst_kvm, struct kvm *src_kvm)
list_del(&src->mirror_entry);
list_add_tail(&dst->mirror_entry, &owner_sev_info->mirror_vms);
}
-}
-static int sev_es_migrate_from(struct kvm *dst, struct kvm *src)
-{
- unsigned long i;
- struct kvm_vcpu *dst_vcpu, *src_vcpu;
- struct vcpu_svm *dst_svm, *src_svm;
+ kvm_for_each_vcpu(i, dst_vcpu, dst_kvm) {
+ dst_svm = to_svm(dst_vcpu);
- if (atomic_read(&src->online_vcpus) != atomic_read(&dst->online_vcpus))
- return -EINVAL;
+ sev_init_vmcb(dst_svm);
- kvm_for_each_vcpu(i, src_vcpu, src) {
- if (!src_vcpu->arch.guest_state_protected)
- return -EINVAL;
- }
+ if (!dst->es_active)
+ continue;
- kvm_for_each_vcpu(i, src_vcpu, src) {
+ /*
+ * Note, the source is not required to have the same number of
+ * vCPUs as the destination when migrating a vanilla SEV VM.
+ */
+ src_vcpu = kvm_get_vcpu(dst_kvm, i);
src_svm = to_svm(src_vcpu);
- dst_vcpu = kvm_get_vcpu(dst, i);
- dst_svm = to_svm(dst_vcpu);
/*
* Transfer VMSA and GHCB state to the destination. Nullify and
@@ -1740,8 +1740,23 @@ static int sev_es_migrate_from(struct kvm *dst, struct kvm *src)
src_svm->vmcb->control.vmsa_pa = INVALID_PAGE;
src_vcpu->arch.guest_state_protected = false;
}
- to_kvm_svm(src)->sev_info.es_active = false;
- to_kvm_svm(dst)->sev_info.es_active = true;
+}
+
+static int sev_check_source_vcpus(struct kvm *dst, struct kvm *src)
+{
+ struct kvm_vcpu *src_vcpu;
+ unsigned long i;
+
+ if (!sev_es_guest(src))
+ return 0;
+
+ if (atomic_read(&src->online_vcpus) != atomic_read(&dst->online_vcpus))
+ return -EINVAL;
+
+ kvm_for_each_vcpu(i, src_vcpu, src) {
+ if (!src_vcpu->arch.guest_state_protected)
+ return -EINVAL;
+ }
return 0;
}
@@ -1789,11 +1804,9 @@ int sev_vm_move_enc_context_from(struct kvm *kvm, unsigned int source_fd)
if (ret)
goto out_dst_vcpu;
- if (sev_es_guest(source_kvm)) {
- ret = sev_es_migrate_from(kvm, source_kvm);
- if (ret)
- goto out_source_vcpu;
- }
+ ret = sev_check_source_vcpus(kvm, source_kvm);
+ if (ret)
+ goto out_source_vcpu;
sev_migrate_from(kvm, source_kvm);
kvm_vm_dead(source_kvm);
@@ -2914,7 +2927,7 @@ int sev_es_string_io(struct vcpu_svm *svm, int size, unsigned int port, int in)
count, in);
}
-void sev_es_init_vmcb(struct vcpu_svm *svm)
+static void sev_es_init_vmcb(struct vcpu_svm *svm)
{
struct kvm_vcpu *vcpu = &svm->vcpu;
@@ -2967,6 +2980,15 @@ void sev_es_init_vmcb(struct vcpu_svm *svm)
}
}
+void sev_init_vmcb(struct vcpu_svm *svm)
+{
+ svm->vmcb->control.nested_ctl |= SVM_NESTED_CTL_SEV_ENABLE;
+ clr_exception_intercept(svm, UD_VECTOR);
+
+ if (sev_es_guest(svm->vcpu.kvm))
+ sev_es_init_vmcb(svm);
+}
+
void sev_es_vcpu_reset(struct vcpu_svm *svm)
{
/*
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 87da90360bc7..44bbf25dfeb9 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1212,15 +1212,8 @@ static void init_vmcb(struct kvm_vcpu *vcpu)
svm->vmcb->control.int_ctl |= V_GIF_ENABLE_MASK;
}
- if (sev_guest(vcpu->kvm)) {
- svm->vmcb->control.nested_ctl |= SVM_NESTED_CTL_SEV_ENABLE;
- clr_exception_intercept(svm, UD_VECTOR);
-
- if (sev_es_guest(vcpu->kvm)) {
- /* Perform SEV-ES specific VMCB updates */
- sev_es_init_vmcb(svm);
- }
- }
+ if (sev_guest(vcpu->kvm))
+ sev_init_vmcb(svm);
svm_hv_init_vmcb(vmcb);
init_vmcb_after_set_cpuid(vcpu);
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 1bddd336a27e..9223ac100ef5 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -649,10 +649,10 @@ void __init sev_set_cpu_caps(void);
void __init sev_hardware_setup(void);
void sev_hardware_unsetup(void);
int sev_cpu_init(struct svm_cpu_data *sd);
+void sev_init_vmcb(struct vcpu_svm *svm);
void sev_free_vcpu(struct kvm_vcpu *vcpu);
int sev_handle_vmgexit(struct kvm_vcpu *vcpu);
int sev_es_string_io(struct vcpu_svm *svm, int size, unsigned int port, int in);
-void sev_es_init_vmcb(struct vcpu_svm *svm);
void sev_es_vcpu_reset(struct vcpu_svm *svm);
void sev_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector);
void sev_es_prepare_switch_to_guest(struct sev_es_save_area *hostsa);
diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat
index 5a5bd74f55bd..9c366b3a676d 100755
--- a/tools/kvm/kvm_stat/kvm_stat
+++ b/tools/kvm/kvm_stat/kvm_stat
@@ -1646,7 +1646,8 @@ Press any other key to refresh statistics immediately.
.format(values))
if len(pids) > 1:
sys.exit('Error: Multiple processes found (pids: {}). Use "-p"'
- ' to specify the desired pid'.format(" ".join(pids)))
+ ' to specify the desired pid'
+ .format(" ".join(map(str, pids))))
namespace.pid = pids[0]
argparser = argparse.ArgumentParser(description=description_text,
diff --git a/tools/testing/selftests/kvm/lib/aarch64/ucall.c b/tools/testing/selftests/kvm/lib/aarch64/ucall.c
index e0b0164e9af8..be1d9728c4ce 100644
--- a/tools/testing/selftests/kvm/lib/aarch64/ucall.c
+++ b/tools/testing/selftests/kvm/lib/aarch64/ucall.c
@@ -73,20 +73,19 @@ void ucall_uninit(struct kvm_vm *vm)
void ucall(uint64_t cmd, int nargs, ...)
{
- struct ucall uc = {
- .cmd = cmd,
- };
+ struct ucall uc = {};
va_list va;
int i;
+ WRITE_ONCE(uc.cmd, cmd);
nargs = nargs <= UCALL_MAX_ARGS ? nargs : UCALL_MAX_ARGS;
va_start(va, nargs);
for (i = 0; i < nargs; ++i)
- uc.args[i] = va_arg(va, uint64_t);
+ WRITE_ONCE(uc.args[i], va_arg(va, uint64_t));
va_end(va);
- *ucall_exit_mmio_addr = (vm_vaddr_t)&uc;
+ WRITE_ONCE(*ucall_exit_mmio_addr, (vm_vaddr_t)&uc);
}
uint64_t get_ucall(struct kvm_vm *vm, uint32_t vcpu_id, struct ucall *uc)
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-25 08:58:50 +0000