204 Commits

Author	SHA1	Message	Date
Marcelo Tosatti	aaee2c94f7	KVM: MMU: Switch to mmu spinlock ... Convert the synchronization of the shadow handling to a separate mmu_lock spinlock. Also guard fetch() by mmap_sem in read-mode to protect against alias and memslot changes. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>	2008-01-30 18:01:21 +02:00
Marcelo Tosatti	7ec5458821	KVM: Add kvm_read_guest_atomic() ... In preparation for a mmu spinlock, add kvm_read_guest_atomic() and use it in fetch() and prefetch_page(). Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>	2008-01-30 18:01:20 +02:00
Marcelo Tosatti	10589a4699	KVM: MMU: Concurrent guest walkers ... Do not hold kvm->lock mutex across the entire pagefault code, only acquire it in places where it is necessary, such as mmu hash list, active list, rmap and parent pte handling. Allow concurrent guest walkers by switching walk_addr() to use mmap_sem in read-mode. And get rid of the lockless __gfn_to_page. [avi: move kvm_mmu_pte_write() locking inside the function] [avi: add locking for real mode] [avi: fix cmpxchg locking] Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>	2008-01-30 18:01:20 +02:00
Avi Kivity	0fce5623ba	KVM: Move drivers/kvm/* to virt/kvm/ ... Signed-off-by: Avi Kivity <avi@qumranet.com>	2008-01-30 18:01:18 +02:00