From 714b93da1a6d97307dfafb9915517879d8a66c0d Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Fri, 5 Jan 2007 16:36:53 -0800 Subject: [PATCH] KVM: MMU: Replace atomic allocations by preallocated objects The mmu sometimes needs memory for reverse mapping and parent pte chains. however, we can't allocate from within the mmu because of the atomic context. So, move the allocations to a central place that can be executed before the main mmu machinery, where we can bail out on failure before any damage is done. (error handling is deffered for now, but the basic structure is there) Signed-off-by: Avi Kivity Acked-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/kvm/paging_tmpl.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/kvm/paging_tmpl.h') diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h index 6acb16ea5ce2..4e6670ff1847 100644 --- a/drivers/kvm/paging_tmpl.h +++ b/drivers/kvm/paging_tmpl.h @@ -323,7 +323,7 @@ static int FNAME(fix_write_pf)(struct kvm_vcpu *vcpu, mark_page_dirty(vcpu->kvm, gfn); *shadow_ent |= PT_WRITABLE_MASK; *guest_ent |= PT_DIRTY_MASK; - rmap_add(vcpu->kvm, shadow_ent); + rmap_add(vcpu, shadow_ent); return 1; } @@ -353,6 +353,9 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, int write_pt = 0; pgprintk("%s: addr %lx err %x\n", __FUNCTION__, addr, error_code); + + mmu_topup_memory_caches(vcpu); + /* * Look up the shadow pte for the faulting address. */ -- cgit v1.2.3