KVM: x86: Implement kvm_arch_vcpu_pre_fault_memory()

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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>

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Paolo Bonzini 2024-06-11 03:57:58 -04:00

parent 58ef24699b

commit 6e01b7601d

3 changed files with 77 additions and 0 deletions

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1

arch/x86/kvm/Kconfig

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73

arch/x86/kvm/mmu/mmu.c

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arch/x86/kvm/x86.c

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