diff options
| author | Kevin Hilman <khilman@linaro.org> | 2015-05-22 14:30:13 -0700 |
|---|---|---|
| committer | Kevin Hilman <khilman@linaro.org> | 2015-05-22 14:30:13 -0700 |
| commit | e49d192fe7dcdc7bc46987f9981dc90f61e5f28c (patch) | |
| tree | 84579e5de62f4d67d65203450d0e0268e1e47f2f /arch/arm/kvm/psci.c | |
| parent | a61d3b775855a1d67d97ca0aa389489cb8a9320d (diff) | |
| parent | 51af817611f2c0987030d024f24fc7ea95dd33e6 (diff) | |
Merge branch 'linux-3.18.y' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into linux-linaro-lsk-v3.18lsk-v3.18-15.05
* 'linux-3.18.y' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable: (222 commits)
Linux 3.18.14
Drivers: hv: vmbus: Don't wait after requesting offers
hfsplus: don't store special "osx" xattr prefix on-disk
drm/radeon: check new address before removing old one
drm/radeon: add SI DPM quirk for Sapphire R9 270 Dual-X 2G GDDR5
drm/radeon: adjust pll when audio is not enabled
3w-sas: fix command completion race
3w-9xxx: fix command completion race
3w-xxxx: fix command completion race
ext4: move check under lock scope to close a race.
ext4: fix data corruption caused by unwritten and delayed extents
uas: Set max_sectors_240 quirk for ASM1053 devices
uas: Add US_FL_MAX_SECTORS_240 flag
uas: Allow uas_use_uas_driver to return usb-storage flags
rbd: end I/O the entire obj_request on error
tty/serial: at91: maxburst was missing for dma transfers
ACPI / SBS: Enable battery manager when present
btrfs: unlock i_mutex after attempting to delete subvolume during send
ASoC: rt5677: fixed wrong DMIC ref clock
ASoC: dapm: Enable autodisable on SOC_DAPM_SINGLE_TLV_AUTODISABLE
...
Diffstat (limited to 'arch/arm/kvm/psci.c')
| -rw-r--r-- | arch/arm/kvm/psci.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c index 09cf37737ee2..58cb3248d277 100644 --- a/arch/arm/kvm/psci.c +++ b/arch/arm/kvm/psci.c @@ -15,6 +15,7 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <linux/preempt.h> #include <linux/kvm_host.h> #include <linux/wait.h> @@ -166,6 +167,23 @@ static unsigned long kvm_psci_vcpu_affinity_info(struct kvm_vcpu *vcpu) static void kvm_prepare_system_event(struct kvm_vcpu *vcpu, u32 type) { + int i; + struct kvm_vcpu *tmp; + + /* + * The KVM ABI specifies that a system event exit may call KVM_RUN + * again and may perform shutdown/reboot at a later time that when the + * actual request is made. Since we are implementing PSCI and a + * caller of PSCI reboot and shutdown expects that the system shuts + * down or reboots immediately, let's make sure that VCPUs are not run + * after this call is handled and before the VCPUs have been + * re-initialized. + */ + kvm_for_each_vcpu(i, tmp, vcpu->kvm) { + tmp->arch.pause = true; + kvm_vcpu_kick(tmp); + } + memset(&vcpu->run->system_event, 0, sizeof(vcpu->run->system_event)); vcpu->run->system_event.type = type; vcpu->run->exit_reason = KVM_EXIT_SYSTEM_EVENT; |