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| author | Joerg Roedel <joerg.roedel@amd.com> | 2010-01-28 12:37:56 +0100 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-03-01 12:36:08 -0300 |
| commit | 8f0b1ab6fb045a1324d9435ba00c2940783b0041 (patch) | |
| tree | 34db9f9080cea014150249da16348ed3e3e01fc3 /arch/x86/kvm/mmu.c | |
| parent | c45b4fd416f5497b6b38dd70acc0e5b01399e5c9 (diff) | |
| download | linux-8f0b1ab6fb045a1324d9435ba00c2940783b0041.tar.gz linux-8f0b1ab6fb045a1324d9435ba00c2940783b0041.tar.bz2 linux-8f0b1ab6fb045a1324d9435ba00c2940783b0041.zip | |
KVM: Introduce kvm_host_page_size
This patch introduces a generic function to find out the
host page size for a given gfn. This function is needed by
the kvm iommu code. This patch also simplifies the x86
host_mapping_level function.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index dc4d954efacd..913ef4b7939a 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -468,24 +468,10 @@ static int has_wrprotected_page(struct kvm *kvm, static int host_mapping_level(struct kvm *kvm, gfn_t gfn) { - unsigned long page_size = PAGE_SIZE; - struct vm_area_struct *vma; - unsigned long addr; + unsigned long page_size; int i, ret = 0; - addr = gfn_to_hva(kvm, gfn); - if (kvm_is_error_hva(addr)) - return PT_PAGE_TABLE_LEVEL; - - down_read(¤t->mm->mmap_sem); - vma = find_vma(current->mm, addr); - if (!vma) - goto out; - - page_size = vma_kernel_pagesize(vma); - -out: - up_read(¤t->mm->mmap_sem); + page_size = kvm_host_page_size(kvm, gfn); for (i = PT_PAGE_TABLE_LEVEL; i < (PT_PAGE_TABLE_LEVEL + KVM_NR_PAGE_SIZES); ++i) { |