diff options
| author | Takuya Yoshikawa | 2012-08-01 11:03:28 +0200 |
|---|---|---|
| committer | Avi Kivity | 2012-08-06 11:47:30 +0200 |
| commit | d89cc617b954aff4030fce178f7d86f59aaf713d (patch) | |
| tree | d04f2ccdddd1d718044f47fdf8442054d87799f6 /arch/x86/kvm/mmu.c | |
| parent | KVM: MMU: Use gfn_to_rmap() instead of directly reading rmap array (diff) | |
| download | kernel-qcow2-linux-d89cc617b954aff4030fce178f7d86f59aaf713d.tar.gz kernel-qcow2-linux-d89cc617b954aff4030fce178f7d86f59aaf713d.tar.xz kernel-qcow2-linux-d89cc617b954aff4030fce178f7d86f59aaf713d.zip | |
KVM: Push rmap into kvm_arch_memory_slot
Two reasons:
- x86 can integrate rmap and rmap_pde and remove heuristics in
__gfn_to_rmap().
- Some architectures do not need rmap.
Since rmap is one of the most memory consuming stuff in KVM, ppc'd
better restrict the allocation to Book3S HV.
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index ee768bb2367f..aa9a987ddefb 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -970,11 +970,8 @@ static unsigned long *__gfn_to_rmap(gfn_t gfn, int level, { unsigned long idx; - if (likely(level == PT_PAGE_TABLE_LEVEL)) - return &slot->rmap[gfn - slot->base_gfn]; - idx = gfn_to_index(gfn, slot->base_gfn, level); - return &slot->arch.rmap_pde[level - PT_DIRECTORY_LEVEL][idx]; + return &slot->arch.rmap[level - PT_PAGE_TABLE_LEVEL][idx]; } /* |