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authorDominik Dingel <dingel@linux.vnet.ibm.com>2013-06-17 16:25:18 +0200
committerChristian Borntraeger <borntraeger@de.ibm.com>2014-01-30 12:50:39 +0100
commit24eb3a824c4f3ccfaa2305dc1d9d9e2a708828c5 (patch)
treea889cb48f43502fb8db57d40ef6f342382d638b6 /arch/s390/include/asm/processor.h
parenta91b8ebe8671980151e0a19ee9fec6b0e1ae1d58 (diff)
downloadop-kernel-dev-24eb3a824c4f3ccfaa2305dc1d9d9e2a708828c5.zip
op-kernel-dev-24eb3a824c4f3ccfaa2305dc1d9d9e2a708828c5.tar.gz
KVM: s390: Add FAULT_FLAG_RETRY_NOWAIT for guest fault
In the case of a fault, we will retry to exit sie64 but with gmap fault indication for this thread set. This makes it possible to handle async page faults. Based on a patch from Martin Schwidefsky. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/processor.h')
-rw-r--r--arch/s390/include/asm/processor.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 0a876bc..dc5fc4f 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -79,6 +79,7 @@ struct thread_struct {
unsigned long ksp; /* kernel stack pointer */
mm_segment_t mm_segment;
unsigned long gmap_addr; /* address of last gmap fault. */
+ unsigned int gmap_pfault; /* signal of a pending guest pfault */
struct per_regs per_user; /* User specified PER registers */
struct per_event per_event; /* Cause of the last PER trap */
unsigned long per_flags; /* Flags to control debug behavior */
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