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| author | Avi Kivity <avi@qumranet.com> | 2007-12-30 12:29:05 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-01-30 18:01:21 +0200 |
| commit | d7824fff896a1698a07a8046dc362f4500c302f7 (patch) | |
| tree | 249e23ec224bc621bea1ef24fa83f5a749d6b35b /include | |
| parent | 7ec54588210df29ea637e6054489bc942c0ef371 (diff) | |
| download | linux-d7824fff896a1698a07a8046dc362f4500c302f7.tar.bz2 | |
KVM: MMU: Avoid calling gfn_to_page() in mmu_set_spte()
Since gfn_to_page() is a sleeping function, and we want to make the core mmu
spinlocked, we need to pass the page from the walker context (which can sleep)
to the shadow context (which cannot).
[marcelo: avoid recursive locking of mmap_sem]
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/kvm_host.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h index 44b89259f6c4..20597bc16744 100644 --- a/include/asm-x86/kvm_host.h +++ b/include/asm-x86/kvm_host.h @@ -224,6 +224,11 @@ struct kvm_vcpu_arch { int last_pt_write_count; u64 *last_pte_updated; + struct { + gfn_t gfn; /* presumed gfn during guest pte update */ + struct page *page; /* page corresponding to that gfn */ + } update_pte; + struct i387_fxsave_struct host_fx_image; struct i387_fxsave_struct guest_fx_image; |