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mirror of https://github.com/edk2-porting/linux-next.git synced 2025-01-12 15:44:01 +08:00
linux-next/arch
Andrey Smetanin 765eaa0f70 kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack
The SynIC message protocol mandates that the message slot is claimed
by atomically setting message type to something other than HVMSG_NONE.
If another message is to be delivered while the slot is still busy,
message pending flag is asserted to indicate to the guest that the
hypervisor wants to be notified when the slot is released.

To make sure the protocol works regardless of where the message
sources are (kernel or userspace), clear the pending flag on SINT ACK
notification, and let the message sources compete for the slot again.

Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
CC: Gleb Natapov <gleb@kernel.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: "K. Y. Srinivasan" <kys@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-12-16 18:49:44 +01:00
..
alpha mm: mlock: add mlock flags to enable VM_LOCKONFAULT usage 2015-11-05 19:34:48 -08:00
arc ARC fixes for 4.4-rc1 2015-11-14 09:09:37 -08:00
arm KVM: arm/arm64: Fix preemptible timer active state crazyness 2015-11-24 18:04:00 +01:00
arm64 arm64: kvm: report original PAR_EL1 upon panic 2015-11-24 18:20:58 +01:00
avr32 dmaengine updates for 4.4-rc1 2015-11-10 10:05:17 -08:00
blackfin
c6x irqdomain: Use irq_domain_get_of_node() instead of direct field access 2015-10-13 19:01:23 +02:00
cris cris: Drop reference to get_cmos_time() 2015-11-02 20:03:05 +01:00
frv kmap_atomic_to_page() has no users, remove it 2015-11-09 15:11:24 -08:00
h8300 h8300 update for v4.4 2015-11-12 15:26:39 -08:00
hexagon
ia64 Power management and ACPI updates for v4.4-rc1 2015-11-04 18:10:13 -08:00
m32r
m68k block: change ->make_request_fn() and users to return a queue cookie 2015-11-07 10:40:46 -07:00
metag Metag architecture changes for v4.4 2015-11-10 16:24:25 -08:00
microblaze kmap_atomic_to_page() has no users, remove it 2015-11-09 15:11:24 -08:00
mips KVM/ARM Fixes for v4.4-rc3. 2015-11-24 19:34:40 +01:00
mn10300
nios2 nios2 update for v4.4-rc1 2015-11-09 16:36:10 -08:00
openrisc
parisc Merge branch 'parisc-4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 2015-11-22 12:50:58 -08:00
powerpc KVM: Use common function for VCPU lookup by id 2015-11-30 12:47:04 +01:00
s390 KVM: s390: consider system MHA for guest storage 2015-12-15 17:08:22 +01:00
score
sh Merge branch 'akpm' (patches from Andrew) 2015-11-07 14:32:45 -08:00
sparc sparc/sparc64: allocate sys_membarrier system call number 2015-11-09 15:11:24 -08:00
tile kmap_atomic_to_page() has no users, remove it 2015-11-09 15:11:24 -08:00
um um: Switch clocksource to hrtimers 2015-11-06 22:54:49 +01:00
unicore32 pwm: Changes for v4.4-rc1 2015-11-11 09:16:10 -08:00
x86 kvm/x86: Hyper-V SynIC message slot pending clearing at SINT ack 2015-12-16 18:49:44 +01:00
xtensa Merge branch 'for-4.4/io-poll' of git://git.kernel.dk/linux-block 2015-11-10 17:23:49 -08:00
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