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| author | Christoffer Dall <christoffer.dall@linaro.org> | 2013-10-02 21:22:28 (GMT) |
|---|---|---|
| committer | Matthew Weigel <Matthew.Weigel@freescale.com> | 2014-12-11 18:39:48 (GMT) |
| commit | a450af45f9aa201d453bc0427914850745dbffb2 (patch) | |
| tree | 874c0cecc5e27783c300e9ac4213ec7ebd8cb164 /arch/x86 | |
| parent | b8b7e9a42d15e054dbaedf7c7892e4105da4fb95 (diff) | |
| download | linux-fsl-qoriq-a450af45f9aa201d453bc0427914850745dbffb2.tar.xz | |
KVM: Move gfn_to_index to x86 specific code
The gfn_to_index function relies on huge page defines which either may
not make sense on systems that don't support huge pages or are defined
in an unconvenient way for other architectures. Since this is
x86-specific, move the function to arch/x86/include/asm/kvm_host.h.
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
(cherry picked from commit 6d9d41e57440e32a3400f37aa05ef7a1a09ced64)
Signed-off-by: Diana Craciun <Diana.Craciun@freescale.com>
Change-Id: Iaf39a658cb1300b06dd59e1b84aa6f8c173cf948
Reviewed-on: http://git.am.freescale.net:8181/22042
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index c76ff74..4134cf6 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -79,6 +79,13 @@ #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1)) #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE) +static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) +{ + /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ + return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - + (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); +} + #define SELECTOR_TI_MASK (1 << 2) #define SELECTOR_RPL_MASK 0x03 |