diff options
| author |   Paolo Bonzini <pbonzini@redhat.com> | 2024-06-11 03:57:58 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-07-12 11:17:47 -0400 |
| commit | 6e01b7601dfed61bcccd8c386c5084fc0d53d20b (patch) | |
| tree | 89d18c832d4be497ceac0499e2406233cb507de6 /arch/x86/kvm/x86.c | |
| parent | KVM: x86/mmu: Make kvm_mmu_do_page_fault() return mapped level (diff) | |
| download | wireguard-linux-6e01b7601dfed61bcccd8c386c5084fc0d53d20b.tar.xz wireguard-linux-6e01b7601dfed61bcccd8c386c5084fc0d53d20b.zip | |
KVM: x86: Implement kvm_arch_vcpu_pre_fault_memory()
Wire KVM_PRE_FAULT_MEMORY ioctl to kvm_mmu_do_page_fault() to populate guest
memory. It can be called right after KVM_CREATE_VCPU creates a vCPU,
since at that point kvm_mmu_create() and kvm_init_mmu() are called and
the vCPU is ready to invoke the KVM page fault handler.
The helper function kvm_tdp_map_page() takes care of the logic to
process RET_PF_* return values and convert them to success or errno.
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Message-ID: <9b866a0ae7147f96571c439e75429a03dcb659b6.1712785629.git.isaku.yamahata@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/x86.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index ba0ad76f53bc..a6968eadd418 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4705,6 +4705,9 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_MEMORY_FAULT_INFO: r = 1; break; + case KVM_CAP_PRE_FAULT_MEMORY: + r = tdp_enabled; + break; case KVM_CAP_EXIT_HYPERCALL: r = KVM_EXIT_HYPERCALL_VALID_MASK; break; |