kernel.git/drivers/kvm/mmu.c, branch linux-2.6.23.y

KVM: VMX: Reset mmu context when entering real mode

2007-12-14T17:50:57Z

patch 8668a3c468ed55d19514117a5a959d91d3d03823 in mainline. Resetting an SMP guest will force AP enter real mode (RESET) with paging enabled in protected mode. While current enter_rmode() can only handle mode switch from nonpaging mode to real mode which leads to SMP reboot failure. Fix by reloading the mmu context on entering real mode. Signed-off-by: Yaozu (Eddie) Dong Signed-off-by: Qing He Signed-off-by: Avi Kivity Signed-off-by: Greg Kroah-Hartman

KVM: MMU: Fix rare oops on guest context switch

2007-09-14T20:59:55Z

A guest context switch to an uncached cr3 can require allocation of shadow pages, but we only recycle shadow pages in kvm_mmu_page_fault(). Move shadow page recycling to mmu_topup_memory_caches(), which is called from both the page fault handler and from guest cr3 reload. Signed-off-by: Avi Kivity Signed-off-by: Linus Torvalds

KVM: MMU: Fix cleaning up the shadow page allocation cache

2007-07-21T06:48:47Z

__free_page() wants a struct page, not a virtual address. Signed-off-by: Avi Kivity Signed-off-by: Linus Torvalds

KVM: MMU: Fix oopses with SLUB

2007-07-20T17:23:59Z

The kvm mmu uses page->private on shadow page tables; so does slub, and an oops result. Fix by allocating regular pages for shadows instead of using slub. Tested-by: S.Çağlar Onur Signed-off-by: Avi Kivity

KVM: Fix memory slot management functions for guest smp

2007-07-20T17:16:29Z

The memory slot management functions were oriented against vcpu 0, where they should be kvm-wide. This causes hangs starting X on guest smp. Fix by making the functions (and resultant tail in the mmu) non-vcpu-specific. Unfortunately this reduces the efficiency of the mmu object cache a bit. We may have to revisit this later. Signed-off-by: Avi Kivity

mm: Remove slab destructors from kmem_cache_create().

2007-07-20T01:11:58Z

Slab destructors were no longer supported after Christoph's c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been BUGs for both slab and slub, and slob never supported them either. This rips out support for the dtor pointer from kmem_cache_create() completely and fixes up every single callsite in the kernel (there were about 224, not including the slab allocator definitions themselves, or the documentation references). Signed-off-by: Paul Mundt

KVM: Clean up #includes

2007-07-16T09:05:49Z

Remove unnecessary ones, and rearange the remaining in the standard order. Signed-off-by: Avi Kivity

KVM: MMU: Fix Wrong tlb flush order

2007-07-16T09:05:48Z

Need to flush the tlb after updating a pte, not before. Signed-off-by: Shaohua Li Signed-off-by: Avi Kivity

KVM: Flush remote tlbs when reducing shadow pte permissions

2007-07-16T09:05:46Z

When a vcpu causes a shadow tlb entry to have reduced permissions, it must also clear the tlb on remote vcpus. We do that by: - setting a bit on the vcpu that requests a tlb flush before the next entry - if the vcpu is currently executing, we send an ipi to make sure it exits before we continue Signed-off-by: Avi Kivity

KVM: Fix vcpu freeing for guest smp

2007-07-16T09:05:45Z

A vcpu can pin up to four mmu shadow pages, which means the freeing loop will never terminate. Fix by first unpinning shadow pages on all vcpus, then freeing shadow pages. Signed-off-by: Avi Kivity