aboutsummaryrefslogtreecommitdiff
path: root/include/linux/kvm_host.h
AgeCommit message (Collapse)AuthorFilesLines
2008-04-27KVM: kill file->f_count abuse in kvmAl Viro1-1/+0
Use kvm own refcounting instead of playing with ->filp->f_count. That will allow to get rid of a lot of crap in anon_inode_getfd() and kill a race in kvm_dev_ioctl_create_vm() (file might have been closed immediately by another thread, so ->filp might point to already freed struct file when we get around to setting it). Signed-off-by: Al Viro <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: Rename debugfs_dir to kvm_debugfs_dirHollis Blanchard1-1/+1
It's a globally exported symbol now. Signed-off-by: Hollis Blanchard <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: add ioctls to save/store mpstateMarcelo Tosatti1-0/+4
So userspace can save/restore the mpstate during migration. [avi: export the #define constants describing the value] [christian: add s390 stubs] [avi: ditto for ia64] Signed-off-by: Marcelo Tosatti <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Carsten Otte <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: hlt emulation should take in-kernel APIC/PIT timers into accountMarcelo Tosatti1-0/+1
Timers that fire between guest hlt and vcpu_block's add_wait_queue() are ignored, possibly resulting in hangs. Also make sure that atomic_inc and waitqueue_active tests happen in the specified order, otherwise the following race is open: CPU0 CPU1 if (waitqueue_active(wq)) add_wait_queue() if (!atomic_read(pit_timer->pending)) schedule() atomic_inc(pit_timer->pending) Signed-off-by: Marcelo Tosatti <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: Add kvm trace userspace interfaceFeng(Eric) Liu1-0/+14
This interface allows user a space application to read the trace of kvm related events through relayfs. Signed-off-by: Feng (Eric) Liu <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: MMU: Don't assume struct page for x86Anthony Liguori1-0/+12
This patch introduces a gfn_to_pfn() function and corresponding functions like kvm_release_pfn_dirty(). Using these new functions, we can modify the x86 MMU to no longer assume that it can always get a struct page for any given gfn. We don't want to eliminate gfn_to_page() entirely because a number of places assume they can do gfn_to_page() and then kmap() the results. When we support IO memory, gfn_to_page() will fail for IO pages although gfn_to_pfn() will succeed. This does not implement support for avoiding reference counting for reserved RAM or for IO memory. However, it should make those things pretty straight forward. Since we're only introducing new common symbols, I don't think it will break the non-x86 architectures but I haven't tested those. I've tested Intel, AMD, NPT, and hugetlbfs with Windows and Linux guests. [avi: fix overflow when shifting left pfns by adding casts] Signed-off-by: Anthony Liguori <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: add vm refcountingIzik Eidus1-0/+4
the main purpose of adding this functions is the abilaty to release the spinlock that protect the kvm list while still be able to do operations on a specific kvm in a safe way. Signed-off-by: Izik Eidus <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: Move some x86 specific constants and structures to include/asm-x86Avi Kivity1-13/+0
Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: detect if VCPU triple faultsJoerg Roedel1-0/+1
In the current inject_page_fault path KVM only checks if there is another PF pending and injects a DF then. But it has to check for a pending DF too to detect a shutdown condition in the VCPU. If this is not detected the VCPU goes to a PF -> DF -> PF loop when it should triple fault. This patch detects this condition and handles it with an KVM_SHUTDOWN exit to userspace. Signed-off-by: Joerg Roedel <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: MMU: large page supportMarcelo Tosatti1-0/+5
Create large pages mappings if the guest PTE's are marked as such and the underlying memory is hugetlbfs backed. If the largepage contains write-protected pages, a large pte is not used. Gives a consistent 2% improvement for data copies on ram mounted filesystem, without NPT/EPT. Anthony measures a 4% improvement on 4-way kernbench, with NPT. Signed-off-by: Marcelo Tosatti <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: MMU: ignore zapped root pagetablesMarcelo Tosatti1-0/+2
Mark zapped root pagetables as invalid and ignore such pages during lookup. This is a problem with the cr3-target feature, where a zapped root table fools the faulting code into creating a read-only mapping. The result is a lockup if the instruction can't be emulated. Signed-off-by: Marcelo Tosatti <[email protected]> Cc: Anthony Liguori <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: Increase the number of user memory slots per vmAvi Kivity1-1/+1
Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: Increase vcpu count to 16Avi Kivity1-1/+1
With NPT support, scalability is much improved. Signed-off-by: Avi Kivity <[email protected]>
2008-04-27KVM: Use CONFIG_PREEMPT_NOTIFIERS around struct preempt_notifierHollis Blanchard1-0/+2
This allows kvm_host.h to be #included even when struct preempt_notifier is undefined. This is needed to build ppc asm-offsets.h. Signed-off-by: Hollis Blanchard <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-03-04KVM: remove the usage of the mmap_sem for the protection of the memory slots.Izik Eidus1-0/+1
This patch replaces the mmap_sem lock for the memory slots with a new kvm private lock, it is needed beacuse untill now there were cases where kvm accesses user memory while holding the mmap semaphore. Signed-off-by: Izik Eidus <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-01-30KVM: Move apic timer migration away from critical sectionAvi Kivity1-0/+6
Migrating the apic timer in the critical section is not very nice, and is absolutely horrible with the real-time port. Move migration to the regular vcpu execution path, triggered by a new bitflag. Cc: Thomas Gleixner <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-01-30KVM: MMU: Switch to mmu spinlockMarcelo Tosatti1-1/+2
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 <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-01-30KVM: Add kvm_read_guest_atomic()Marcelo Tosatti1-0/+2
In preparation for a mmu spinlock, add kvm_read_guest_atomic() and use it in fetch() and prefetch_page(). Signed-off-by: Marcelo Tosatti <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-01-30KVM: local APIC TPR access reporting facilityAvi Kivity1-1/+1
Add a facility to report on accesses to the local apic tpr even if the local apic is emulated in the kernel. This is basically a hack that allows userspace to patch Windows which tends to bang on the tpr a lot. Signed-off-by: Avi Kivity <[email protected]>
2008-01-30KVM: Move kvm_vcpu_kick() to x86.cZhang Xiantao1-0/+1
Moving kvm_vcpu_kick() to x86.c. Since it should be common for all archs, put its declarations in <linux/kvm_host.h> Signed-off-by: Zhang Xiantao <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2008-01-30KVM: Move arch dependent files to new directory arch/x86/kvm/Avi Kivity1-0/+289
This paves the way for multiple architecture support. Note that while ioapic.c could potentially be shared with ia64, it is also moved. Signed-off-by: Avi Kivity <[email protected]>
Powered by cgit, Gruvboxed by Blaster4385.