diff options
| author | chai wen <chaiw.fnst@cn.fujitsu.com> | 2013-10-14 18:22:33 +0400 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-10-15 14:43:37 +0400 |
| commit | f2e106692d5189303997ad7b96de8d8123aa5613 (patch) | |
| tree | be15cad31bc5701570a571b3be04e299bb4ac547 /include | |
| parent | a7efdf6bec34f1a693a926ebd08de6ba6e700dff (diff) | |
| download | linux-f2e106692d5189303997ad7b96de8d8123aa5613.tar.xz | |
KVM: Drop FOLL_GET in GUP when doing async page fault
Page pinning is not mandatory in kvm async page fault processing since
after async page fault event is delivered to a guest it accesses page once
again and does its own GUP. Drop the FOLL_GET flag in GUP in async_pf
code, and do some simplifying in check/clear processing.
Suggested-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Gu zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: chai wen <chaiw.fnst@cn.fujitsu.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kvm_host.h | 2 | ||||
| -rw-r--r-- | include/trace/events/kvm.h | 10 |
2 files changed, 5 insertions, 7 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index f6dccde755f6..c9d4236ab442 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -189,7 +189,7 @@ struct kvm_async_pf { gva_t gva; unsigned long addr; struct kvm_arch_async_pf arch; - struct page *page; + bool wakeup_all; }; void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h index 7005d1109ec9..131a0bda7aec 100644 --- a/include/trace/events/kvm.h +++ b/include/trace/events/kvm.h @@ -296,23 +296,21 @@ DEFINE_EVENT(kvm_async_pf_nopresent_ready, kvm_async_pf_ready, TRACE_EVENT( kvm_async_pf_completed, - TP_PROTO(unsigned long address, struct page *page, u64 gva), - TP_ARGS(address, page, gva), + TP_PROTO(unsigned long address, u64 gva), + TP_ARGS(address, gva), TP_STRUCT__entry( __field(unsigned long, address) - __field(pfn_t, pfn) __field(u64, gva) ), TP_fast_assign( __entry->address = address; - __entry->pfn = page ? page_to_pfn(page) : 0; __entry->gva = gva; ), - TP_printk("gva %#llx address %#lx pfn %#llx", __entry->gva, - __entry->address, __entry->pfn) + TP_printk("gva %#llx address %#lx", __entry->gva, + __entry->address) ); #endif |