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| author | Sean Christopherson <seanjc@google.com> | 2023-04-04 17:31:33 -0700 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-04-10 15:17:29 -0700 |
| commit | 9ed3bf411226f446a9795f2b49a15b9df98d7cf5 (patch) | |
| tree | dfbe8e6c2ec072d9d97120f4c79d18074b37e110 /arch/x86/include | |
| parent | 8a1300ff95185b23baff9c226a001c269108f9ea (diff) | |
| download | linux-9ed3bf411226f446a9795f2b49a15b9df98d7cf5.tar.gz linux-9ed3bf411226f446a9795f2b49a15b9df98d7cf5.tar.bz2 linux-9ed3bf411226f446a9795f2b49a15b9df98d7cf5.zip | |
KVM: x86/mmu: Move filling of Hyper-V's TLB range struct into Hyper-V code
Refactor Hyper-V's range-based TLB flushing API to take a gfn+nr_pages
pair instead of a struct, and bury said struct in Hyper-V specific code.
Passing along two params generates much better code for the common case
where KVM is _not_ running on Hyper-V, as forwarding the flush on to
Hyper-V's hv_flush_remote_tlbs_range() from kvm_flush_remote_tlbs_range()
becomes a tail call.
Cc: David Matlack <dmatlack@google.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20230405003133.419177-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index ec22101410ee..09eb37853cb1 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -482,11 +482,6 @@ struct kvm_mmu { u64 pdptrs[4]; /* pae */ }; -struct kvm_tlb_range { - u64 start_gfn; - u64 pages; -}; - enum pmc_type { KVM_PMC_GP = 0, KVM_PMC_FIXED, @@ -1589,8 +1584,8 @@ struct kvm_x86_ops { void (*flush_tlb_all)(struct kvm_vcpu *vcpu); void (*flush_tlb_current)(struct kvm_vcpu *vcpu); int (*flush_remote_tlbs)(struct kvm *kvm); - int (*flush_remote_tlbs_range)(struct kvm *kvm, - struct kvm_tlb_range *range); + int (*flush_remote_tlbs_range)(struct kvm *kvm, gfn_t gfn, + gfn_t nr_pages); /* * Flush any TLB entries associated with the given GVA. |