David Hildenbrand 5c0aea0e8d KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING ...

We needed the lock to avoid racing with creation of the irqchip on x86. As
kvm_set_irq_routing() calls srcu_synchronize_expedited(), this lock
might be held for a longer time.

Let's introduce an arch specific callback to check if we can actually
add irq routes. For x86, all we have to do is check if we have an
irqchip in the kernel. We don't need kvm->lock at that point as the
irqchip is marked as inititalized only when actually fully created.

Reported-by: Steve Rutherford <srutherford@google.com>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Fixes: 1df6ddede10a ("KVM: x86: race between KVM_SET_GSI_ROUTING and KVM_CREATE_IRQCHIP")
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2017-05-02 14:45:45 +02:00

..

alpha

sched/headers: Move task->mm handling methods to <linux/sched/mm.h>

2017-03-03 01:43:28 +01:00

arc

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

arm

KVM/ARM Changes for v4.12.

2017-04-27 17:33:14 +02:00

arm64

KVM/ARM Changes for v4.12.

2017-04-27 17:33:14 +02:00

avr32

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

blackfin

sched/headers: Move task->mm handling methods to <linux/sched/mm.h>

2017-03-03 01:43:28 +01:00

c6x

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>

2017-03-02 08:42:36 +01:00

cris

Merge branch 'prep-for-5level'

2017-03-10 08:59:07 -08:00

frv

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

h8300

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

hexagon

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

ia64

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

m32r

sched/headers: Move task->mm handling methods to <linux/sched/mm.h>

2017-03-03 01:43:28 +01:00

m68k

sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>

2017-03-02 08:42:37 +01:00

metag

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

microblaze

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

mips

KVM: add kvm_{test,clear}_request to replace {test,clear}_bit

2017-04-27 14:12:22 +02:00

mn10300

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

nios2

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

openrisc

openrisc: Export symbols needed by modules

2017-03-16 00:12:57 +09:00

parisc

parisc: Fix system shutdown halt

2017-03-18 17:27:45 +01:00

powerpc

KVM: add kvm_{test,clear}_request to replace {test,clear}_bit

2017-04-27 14:12:22 +02:00

s390

KVM: add kvm_{test,clear}_request to replace {test,clear}_bit

2017-04-27 14:12:22 +02:00

score

Fixup for arch/score after extable.h introduction

2017-03-11 14:16:50 -08:00

sh

Merge branch 'prep-for-5level'

2017-03-10 08:59:07 -08:00

sparc

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

tile

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

um

x86/arch_prctl/64: Rename do_arch_prctl() to do_arch_prctl_64()

2017-03-20 16:10:32 +01:00

unicore32

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

x86

KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING

2017-05-02 14:45:45 +02:00

xtensa

arch, mm: convert all architectures to use 5level-fixup.h

2017-03-09 11:48:47 -08:00

.gitignore

…

Kconfig

scripts/spelling.txt: add "an user" pattern and fix typo instances

2017-02-27 18:43:46 -08:00