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Marcelo Tosatti 622395a9e6 KVM: only abort guest entry if timer count goes from 0->1 
Only abort guest entry if the timer count went from 0->1, since for 1->2
or larger the bit will either be set already or a timer irq will have
been injected.

Using atomic_inc_and_test() for it also introduces an SMP barrier
to the LAPIC version (thought it was unecessary because of timer
migration, but guest can be scheduled to a different pCPU between exit
and kvm_vcpu_block(), so there is the possibility for a race).

Noticed by Avi.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20 12:42:32 +03:00
..
alpha Merge branch 'generic-ipi' into generic-ipi-for-linus 2008-07-15 21:55:59 +02:00
arm Merge branch 'generic-ipi' into generic-ipi-for-linus 2008-07-15 21:55:59 +02:00
avr32 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc 2008-07-16 15:17:52 -07:00
blackfin Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
cris Merge branch 'generic-ipi' into generic-ipi-for-linus 2008-07-15 21:55:59 +02:00
frv PCI: remove unused arch pcibios_update_resource() functions 2008-06-27 13:14:01 -07:00
h8300 [PATCH] take init_files to fs/file.c 2008-05-16 17:22:20 -04:00
ia64 KVM: Add coalesced MMIO support (ia64 part) 2008-07-20 12:42:31 +03:00
m32r smp_call_function: get rid of the unused nonatomic/retry argument 2008-06-26 11:24:35 +02:00
m68k Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
m68knommu Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2008-07-16 17:25:46 -07:00
mips Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2008-07-16 17:25:46 -07:00
mn10300 mn10300: provide __ucmpdi2() for MN10300 2008-07-04 10:40:07 -07:00
parisc Merge branch 'generic-ipi' into generic-ipi-for-linus 2008-07-15 21:55:59 +02:00
powerpc KVM: Add coalesced MMIO support (powerpc part) 2008-07-20 12:42:31 +03:00
s390 KVM: Remove decache_vcpus_on_cpu() and related callbacks 2008-07-20 12:42:25 +03:00
sh Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2008-07-16 17:25:46 -07:00
sparc Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
sparc64 Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2008-07-16 17:25:46 -07:00
um Merge branch 'generic-ipi' into generic-ipi-for-linus 2008-07-15 21:55:59 +02:00
v850 [PATCH] take init_files to fs/file.c 2008-05-16 17:22:20 -04:00
x86 KVM: only abort guest entry if timer count goes from 0->1 2008-07-20 12:42:32 +03:00
xtensa [PATCH] take init_files to fs/file.c 2008-05-16 17:22:20 -04:00
.gitignore
Kconfig Add generic helpers for arch IPI function calls 2008-06-26 11:21:34 +02:00