linux-toradex.git/virt, branch v2.6.26-rc2

KVM: Export necessary function for EPT

2008-05-04T11:44:40+00:00

Signed-off-by: Sheng Yang 
Signed-off-by: Avi Kivity

[PATCH] sanitize anon_inode_getfd()

2008-05-01T17:08:50+00:00

a) none of the callers even looks at inode or file returned by anon_inode_getfd()
b) any caller that would try to look at those would be racy, since by the time
it returns we might have raced with close() from another thread and that
file would be pining for fjords.

Signed-off-by: Al Viro

KVM: kill file->f_count abuse in kvm

2008-04-27T15:21:46+00:00

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 
Signed-off-by: Avi Kivity

KVM: Rename debugfs_dir to kvm_debugfs_dir

2008-04-27T15:21:36+00:00

It's a globally exported symbol now.

Signed-off-by: Hollis Blanchard 
Signed-off-by: Avi Kivity

KVM: add ioctls to save/store mpstate

2008-04-27T15:21:16+00:00

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 
Signed-off-by: Christian Borntraeger 
Signed-off-by: Carsten Otte 
Signed-off-by: Avi Kivity

KVM: hlt emulation should take in-kernel APIC/PIT timers into account

2008-04-27T09:04:11+00:00

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 
Signed-off-by: Avi Kivity

KVM: Add kvm trace userspace interface

2008-04-27T09:01:22+00:00

This interface allows user a space application to read the trace of kvm
related events through relayfs.

Signed-off-by: Feng (Eric) Liu 
Signed-off-by: Avi Kivity

KVM: MMU: Don't assume struct page for x86

2008-04-27T09:01:15+00:00

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 
Signed-off-by: Avi Kivity

KVM: add vm refcounting

2008-04-27T09:00:56+00:00

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 
Signed-off-by: Avi Kivity

KVM: Use kzalloc to avoid allocating kvm_regs from kernel stack

2008-04-27T08:53:26+00:00

Since the size of kvm_regs is too big to allocate from kernel stack on ia64,
use kzalloc to allocate it.

Signed-off-by: Xiantao Zhang 
Signed-off-by: Avi Kivity