The following two patches are about how to speed up in xenpaging when page in pages. On suse11-64 with 4G memory,if we page out 2G pages,it will cost about 15.5 seconds, but take 2088 seconds to finish paging in.If page-in costs too much time,it will cause unmesurable problems when vm or dom0 access the paged_out page,such as BSOD,crash. What鈥檚 more,the dom0 is always in high I/O pressure. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
hongkaixing@huawei.com
2012-Jan-05 03:50 UTC
[PATCH 1 of 2] xenpaging:add a new array to speed up page-in in xenpaging
# HG changeset patch
# User hongkaixing<hongkaixing@huawei.com>
# Date 1325149704 -28800
# Node ID 052727b8165ce6e05002184ae894096214c8b537
# Parent 54a5e994a241a506900ee0e197bb42e5f1d8e759
xenpaging:add a new array to speed up page-in in xenpaging
This patch adds a new array named page_out_index to reserve the
victim''s index.
When page in a page,it has to go through a for loop from 0 to num_pages to find
the right page to read,and it costs much time in this loop.After adding the
page_out_index array,it just reads the arrry to get the right page,and saves
much time.
The following is a xenpaging test on suse11-64 with 4G memories.
Nums of page_out pages Page out time Page in time(in unstable code) Page in
time(apply this patch)
512M(131072) 2.6s 540s 530s
2G(524288) 15.5s 2088s 2055s
Signed-off-byhongkaixing<hongkaixing@huawei.com>,shizhen<bicky.shi@huawei.com>
diff -r 54a5e994a241 -r 052727b8165c tools/xenpaging/xenpaging.c
--- a/tools/xenpaging/xenpaging.c Wed Nov 02 17:09:09 2011 +0000
+++ b/tools/xenpaging/xenpaging.c Thu Dec 29 17:08:24 2011 +0800
@@ -599,6 +599,7 @@
struct sigaction act;
xenpaging_t *paging;
xenpaging_victim_t *victims;
+ victim_to_i_t *page_out_index = NULL;
mem_event_request_t req;
mem_event_response_t rsp;
int i;
@@ -637,6 +638,17 @@
}
victims = calloc(paging->num_pages, sizeof(xenpaging_victim_t));
+ if (NULL == victims)
+ {
+ ERROR("Failed to alloc memory\n");
+ goto out;
+ }
+ page_out_index = (victim_to_i_t
*)calloc(paging->domain_info->max_pages, sizeof(victim_to_i_t));
+ if ( NULL == page_out_index )
+ {
+ ERROR("Failed to alloc memory\n");
+ goto out;
+ }
/* ensure that if we get a signal, we''ll do cleanup, then exit */
act.sa_handler = close_handler;
@@ -660,6 +672,7 @@
break;
if ( i % 100 == 0 )
DPRINTF("%d pages evicted\n", i);
+ page_out_index[victims[i].gfn].index=i;
}
DPRINTF("%d pages evicted. Done.\n", i);
@@ -687,17 +700,7 @@
if ( test_and_clear_bit(req.gfn, paging->bitmap) )
{
/* Find where in the paging file to read from */
- for ( i = 0; i < paging->num_pages; i++ )
- {
- if ( victims[i].gfn == req.gfn )
- break;
- }
-
- if ( i >= paging->num_pages )
- {
- DPRINTF("Couldn''t find page
%"PRIx64"\n", req.gfn);
- goto out;
- }
+ i = page_out_index[req.gfn].index ;
if ( req.flags & MEM_EVENT_FLAG_DROP_PAGE )
{
@@ -733,7 +736,11 @@
if ( interrupted )
victims[i].gfn = INVALID_MFN;
else
+ {
evict_victim(paging, &victims[i], fd, i);
+ if( victims[i].gfn !=INVALID_MFN )
+ page_out_index[victims[i].gfn].index = i;
+ }
}
else
{
@@ -798,7 +805,15 @@
out:
close(fd);
unlink_pagefile();
- free(victims);
+ if ( NULL != victims )
+ {
+ free(victims);
+ }
+
+ if ( NULL != page_out_index )
+ {
+ free(page_out_index);
+ }
/* Tear down domain paging */
rc1 = xenpaging_teardown(paging);
diff -r 54a5e994a241 -r 052727b8165c tools/xenpaging/xenpaging.h
--- a/tools/xenpaging/xenpaging.h Wed Nov 02 17:09:09 2011 +0000
+++ b/tools/xenpaging/xenpaging.h Thu Dec 29 17:08:24 2011 +0800
@@ -54,6 +54,10 @@
unsigned long pagein_queue[XENPAGING_PAGEIN_QUEUE_SIZE];
} xenpaging_t;
+typedef struct victim_to_i {
+ /* the index of victim array to read from */
+ int index;
+} victim_to_i_t;
typedef struct xenpaging_victim {
/* the gfn of the page to evict */
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hongkaixing@huawei.com
2012-Jan-05 03:50 UTC
[PATCH 2 of 2] xenpaging:change page-in process to speed up page-in in xenpaging
# HG changeset patch
# User hongkaixing<hongkaixing@huawei.com>
# Date 1325158899 -28800
# Node ID 978daceef147273920f298556489b60dc32ce458
# Parent 052727b8165ce6e05002184ae894096214c8b537
xenpaging:change page-in process to speed up page-in in xenpaging
In this patch,we change the page-in process.Firstly,we add a new function
paging_in_trigger_sync
to handle page-in requests directly.and when the requests'' count is up
to 32,then handle them
batchly;Most importantly,we use an increasing gfn to test_bit,which saves much
time.
In p2m.c,we changes p2m_mem_paging_populate() to return a value;
The following is a xenpaging test on suse11-64 with 4G memory.
Nums of page_out pages Page out time Page in time(in unstable code) Page in
time(apply this patch)
512M(131072) 2.6s 540s 4.7s
2G(524288) 15.5s 2088s 17.7s
Signed-off-byhongkaixing<hongkaixing@huawei.com>,shizhen<bicky.shi@huawei.com>
diff -r 052727b8165c -r 978daceef147 tools/libxc/xc_mem_paging.c
--- a/tools/libxc/xc_mem_paging.c Thu Dec 29 17:08:24 2011 +0800
+++ b/tools/libxc/xc_mem_paging.c Thu Dec 29 19:41:39 2011 +0800
@@ -73,6 +73,13 @@
NULL, NULL, gfn);
}
+int xc_mem_paging_in(xc_interface *xch, domid_t domain_id, unsigned long gfn)
+{
+ return xc_mem_event_control(xch, domain_id,
+ XEN_DOMCTL_MEM_EVENT_OP_PAGING_IN,
+ XEN_DOMCTL_MEM_EVENT_OP_PAGING,
+ NULL, NULL, gfn);
+}
/*
* Local variables:
diff -r 052727b8165c -r 978daceef147 tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h Thu Dec 29 17:08:24 2011 +0800
+++ b/tools/libxc/xenctrl.h Thu Dec 29 19:41:39 2011 +0800
@@ -1841,6 +1841,7 @@
int xc_mem_paging_prep(xc_interface *xch, domid_t domain_id, unsigned long
gfn);
int xc_mem_paging_resume(xc_interface *xch, domid_t domain_id,
unsigned long gfn);
+int xc_mem_paging_in(xc_interface *xch, domid_t domain_id,unsigned long gfn);
int xc_mem_access_enable(xc_interface *xch, domid_t domain_id,
void *shared_page, void *ring_page);
diff -r 052727b8165c -r 978daceef147 tools/xenpaging/xenpaging.c
--- a/tools/xenpaging/xenpaging.c Thu Dec 29 17:08:24 2011 +0800
+++ b/tools/xenpaging/xenpaging.c Thu Dec 29 19:41:39 2011 +0800
@@ -594,6 +594,13 @@
return ret;
}
+static int paging_in_trigger_sync(xenpaging_t *paging,unsigned long gfn)
+{
+ int rc = 0;
+ rc = xc_mem_paging_in(paging->xc_handle,
paging->mem_event.domain_id,gfn);
+ return rc;
+}
+
int main(int argc, char *argv[])
{
struct sigaction act;
@@ -605,6 +612,9 @@
int i;
int rc = -1;
int rc1;
+ int request_count = 0;
+ unsigned long page_in_start_gfn = 0;
+ unsigned long real_page = 0;
xc_interface *xch;
int open_flags = O_CREAT | O_TRUNC | O_RDWR;
@@ -773,24 +783,51 @@
/* Write all pages back into the guest */
if ( interrupted == SIGTERM || interrupted == SIGINT )
{
- int num = 0;
+ request_count = 0;
for ( i = 0; i < paging->domain_info->max_pages; i++ )
{
- if ( test_bit(i, paging->bitmap) )
+ real_page = i + page_in_start_gfn;
+ real_page %= paging->domain_info->max_pages;
+ if ( test_bit(real_page, paging->bitmap) )
{
- paging->pagein_queue[num] = i;
- num++;
- if ( num == XENPAGING_PAGEIN_QUEUE_SIZE )
- break;
+ rc = paging_in_trigger_sync(paging,real_page);
+ if ( 0 == rc )
+ {
+ request_count++;
+ /* If page_in requests up to 32 then handle them */
+ if( request_count >= 32 )
+ {
+ page_in_start_gfn=real_page + 1;
+ break;
+ }
+ }
+ else
+ {
+ /* If IO ring is full then handle requests to free
space */
+ if( ENOSPC == errno )
+ {
+ page_in_start_gfn = real_page;
+ break;
+ }
+ /* If p2mt is not p2m_is_paging,then clear bitmap;
+ * e.g. a page is paged then it is dropped by balloon.
+ */
+ else if ( EINVAL == errno )
+ {
+ clear_bit(i,paging->bitmap);
+ policy_notify_paged_in(i);
+ }
+ /* If hypercall fails then go to teardown xenpaging */
+ else
+ {
+ ERROR("Error paging in page");
+ goto out;
+ }
+ }
}
}
- /*
- * One more round if there are still pages to process.
- * If no more pages to process, exit loop.
- */
- if ( num )
- page_in_trigger();
- else if ( i == paging->domain_info->max_pages )
+ if( (i==paging->domain_info->max_pages) &&
+
!RING_HAS_UNCONSUMED_REQUESTS(&paging->mem_event.back_ring) )
break;
}
else
diff -r 052727b8165c -r 978daceef147 xen/arch/x86/mm/mem_paging.c
--- a/xen/arch/x86/mm/mem_paging.c Thu Dec 29 17:08:24 2011 +0800
+++ b/xen/arch/x86/mm/mem_paging.c Thu Dec 29 19:41:39 2011 +0800
@@ -57,7 +57,14 @@
return 0;
}
break;
-
+
+ case XEN_DOMCTL_MEM_EVENT_OP_PAGING_IN:
+ {
+ unsigned long gfn = mec->gfn;
+ return p2m_mem_paging_populate(d, gfn);
+ }
+ break;
+
default:
return -ENOSYS;
break;
diff -r 052727b8165c -r 978daceef147 xen/arch/x86/mm/p2m.c
--- a/xen/arch/x86/mm/p2m.c Thu Dec 29 17:08:24 2011 +0800
+++ b/xen/arch/x86/mm/p2m.c Thu Dec 29 19:41:39 2011 +0800
@@ -874,7 +874,7 @@
* already sent to the pager. In this case the caller has to try again until
the
* gfn is fully paged in again.
*/
-void p2m_mem_paging_populate(struct domain *d, unsigned long gfn)
+int p2m_mem_paging_populate(struct domain *d, unsigned long gfn)
{
struct vcpu *v = current;
mem_event_request_t req;
@@ -882,10 +882,12 @@
p2m_access_t a;
mfn_t mfn;
struct p2m_domain *p2m = p2m_get_hostp2m(d);
+ int ret;
/* Check that there''s space on the ring for this request */
+ ret = -ENOSPC;
if ( mem_event_check_ring(d, &d->mem_paging) )
- return;
+ goto out;
memset(&req, 0, sizeof(req));
req.type = MEM_EVENT_TYPE_PAGING;
@@ -905,19 +907,27 @@
}
p2m_unlock(p2m);
+ ret = -EINVAL;
/* Pause domain if request came from guest and gfn has paging type */
- if ( p2m_is_paging(p2mt) && v->domain->domain_id ==
d->domain_id )
+ if ( p2m_is_paging(p2mt) && v->domain->domain_id ==
d->domain_id )
{
vcpu_pause_nosync(v);
req.flags |= MEM_EVENT_FLAG_VCPU_PAUSED;
}
/* No need to inform pager if the gfn is not in the page-out path */
- else if ( p2mt != p2m_ram_paging_out && p2mt != p2m_ram_paged )
+ else if ( p2mt == p2m_ram_paging_in_start || p2mt == p2m_ram_paging_in )
{
/* gfn is already on its way back and vcpu is not paused */
mem_event_put_req_producers(&d->mem_paging);
- return;
+ return 0;
}
+ else if ( !p2m_is_paging(p2mt) )
+ {
+ /* please clear the bit in paging->bitmap; */
+ mem_event_put_req_producers(&d->mem_paging);
+ goto out;
+ }
+
/* Send request to pager */
req.gfn = gfn;
@@ -925,8 +935,13 @@
req.vcpu_id = v->vcpu_id;
mem_event_put_request(d, &d->mem_paging, &req);
+
+ ret = 0;
+ out:
+ return ret;
}
+
/**
* p2m_mem_paging_prep - Allocate a new page for the guest
* @d: guest domain
diff -r 052727b8165c -r 978daceef147 xen/include/asm-x86/p2m.h
--- a/xen/include/asm-x86/p2m.h Thu Dec 29 17:08:24 2011 +0800
+++ b/xen/include/asm-x86/p2m.h Thu Dec 29 19:41:39 2011 +0800
@@ -485,7 +485,7 @@
/* Tell xenpaging to drop a paged out frame */
void p2m_mem_paging_drop_page(struct domain *d, unsigned long gfn);
/* Start populating a paged out frame */
-void p2m_mem_paging_populate(struct domain *d, unsigned long gfn);
+int p2m_mem_paging_populate(struct domain *d, unsigned long gfn);
/* Prepare the p2m for paging a frame in */
int p2m_mem_paging_prep(struct domain *d, unsigned long gfn);
/* Resume normal operation (in case a domain was paused) */
diff -r 052727b8165c -r 978daceef147 xen/include/public/domctl.h
--- a/xen/include/public/domctl.h Thu Dec 29 17:08:24 2011 +0800
+++ b/xen/include/public/domctl.h Thu Dec 29 19:41:39 2011 +0800
@@ -721,6 +721,7 @@
#define XEN_DOMCTL_MEM_EVENT_OP_PAGING_EVICT 3
#define XEN_DOMCTL_MEM_EVENT_OP_PAGING_PREP 4
#define XEN_DOMCTL_MEM_EVENT_OP_PAGING_RESUME 5
+#define XEN_DOMCTL_MEM_EVENT_OP_PAGING_IN 6
/*
* Access permissions.
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Tim Deegan
2012-Jan-05 09:05 UTC
Re: [PATCH 2 of 2] xenpaging:change page-in process to speed up page-in in xenpaging
Hello, At 03:50 +0000 on 05 Jan (1325735430), hongkaixing@huawei.com wrote:> xenpaging:change page-in process to speed up page-in in xenpaging > In this patch,we change the page-in process.Firstly,we add a new function paging_in_trigger_sync > to handle page-in requests directly.and when the requests'' count is up to 32,then handle them > batchly;Most importantly,we use an increasing gfn to test_bit,which saves much time. > In p2m.c,we changes p2m_mem_paging_populate() to return a value; > The following is a xenpaging test on suse11-64 with 4G memory. > > Nums of page_out pages Page out time Page in time(in unstable code) Page in time(apply this patch) > 512M(131072) 2.6s 540s 4.7s > 2G(524288) 15.5s 2088s 17.7s >Thanks for the patch! That''s an impressive difference. You''re changing quite a few things in this patch, though. Can you send them as separate patches so they can be reviewed one at a time? Is one of them in particular making the difference? I suspect it''s mostly the change to test_bit(), and the rest is not necessary. Cheers, Tim.> Signed-off-by??hongkaixing<hongkaixing@huawei.com>,shizhen<bicky.shi@huawei.com> > > diff -r 052727b8165c -r 978daceef147 tools/libxc/xc_mem_paging.c > --- a/tools/libxc/xc_mem_paging.c Thu Dec 29 17:08:24 2011 +0800 > +++ b/tools/libxc/xc_mem_paging.c Thu Dec 29 19:41:39 2011 +0800 > @@ -73,6 +73,13 @@ > NULL, NULL, gfn); > } > > +int xc_mem_paging_in(xc_interface *xch, domid_t domain_id, unsigned long gfn) > +{ > + return xc_mem_event_control(xch, domain_id, > + XEN_DOMCTL_MEM_EVENT_OP_PAGING_IN, > + XEN_DOMCTL_MEM_EVENT_OP_PAGING, > + NULL, NULL, gfn); > +} > > /* > * Local variables: > diff -r 052727b8165c -r 978daceef147 tools/libxc/xenctrl.h > --- a/tools/libxc/xenctrl.h Thu Dec 29 17:08:24 2011 +0800 > +++ b/tools/libxc/xenctrl.h Thu Dec 29 19:41:39 2011 +0800 > @@ -1841,6 +1841,7 @@ > int xc_mem_paging_prep(xc_interface *xch, domid_t domain_id, unsigned long gfn); > int xc_mem_paging_resume(xc_interface *xch, domid_t domain_id, > unsigned long gfn); > +int xc_mem_paging_in(xc_interface *xch, domid_t domain_id,unsigned long gfn); > > int xc_mem_access_enable(xc_interface *xch, domid_t domain_id, > void *shared_page, void *ring_page); > diff -r 052727b8165c -r 978daceef147 tools/xenpaging/xenpaging.c > --- a/tools/xenpaging/xenpaging.c Thu Dec 29 17:08:24 2011 +0800 > +++ b/tools/xenpaging/xenpaging.c Thu Dec 29 19:41:39 2011 +0800 > @@ -594,6 +594,13 @@ > return ret; > } > > +static int paging_in_trigger_sync(xenpaging_t *paging,unsigned long gfn) > +{ > + int rc = 0; > + rc = xc_mem_paging_in(paging->xc_handle, paging->mem_event.domain_id,gfn); > + return rc; > +}This function is> + > int main(int argc, char *argv[]) > { > struct sigaction act; > @@ -605,6 +612,9 @@ > int i; > int rc = -1; > int rc1; > + int request_count = 0; > + unsigned long page_in_start_gfn = 0; > + unsigned long real_page = 0; > xc_interface *xch; > > int open_flags = O_CREAT | O_TRUNC | O_RDWR; > @@ -773,24 +783,51 @@ > /* Write all pages back into the guest */ > if ( interrupted == SIGTERM || interrupted == SIGINT ) > { > - int num = 0; > + request_count = 0; > for ( i = 0; i < paging->domain_info->max_pages; i++ ) > { > - if ( test_bit(i, paging->bitmap) ) > + real_page = i + page_in_start_gfn; > + real_page %= paging->domain_info->max_pages; > + if ( test_bit(real_page, paging->bitmap) ) > { > - paging->pagein_queue[num] = i; > - num++; > - if ( num == XENPAGING_PAGEIN_QUEUE_SIZE ) > - break; > + rc = paging_in_trigger_sync(paging,real_page); > + if ( 0 == rc ) > + { > + request_count++; > + /* If page_in requests up to 32 then handle them */ > + if( request_count >= 32 ) > + { > + page_in_start_gfn=real_page + 1; > + break; > + } > + } > + else > + { > + /* If IO ring is full then handle requests to free space */ > + if( ENOSPC == errno ) > + { > + page_in_start_gfn = real_page; > + break; > + } > + /* If p2mt is not p2m_is_paging,then clear bitmap; > + * e.g. a page is paged then it is dropped by balloon. > + */ > + else if ( EINVAL == errno ) > + { > + clear_bit(i,paging->bitmap); > + policy_notify_paged_in(i); > + } > + /* If hypercall fails then go to teardown xenpaging */ > + else > + { > + ERROR("Error paging in page"); > + goto out; > + } > + } > } > } > - /* > - * One more round if there are still pages to process. > - * If no more pages to process, exit loop. > - */ > - if ( num ) > - page_in_trigger(); > - else if ( i == paging->domain_info->max_pages ) > + if( (i==paging->domain_info->max_pages) && > + !RING_HAS_UNCONSUMED_REQUESTS(&paging->mem_event.back_ring) ) > break; > } > else > diff -r 052727b8165c -r 978daceef147 xen/arch/x86/mm/mem_paging.c > --- a/xen/arch/x86/mm/mem_paging.c Thu Dec 29 17:08:24 2011 +0800 > +++ b/xen/arch/x86/mm/mem_paging.c Thu Dec 29 19:41:39 2011 +0800 > @@ -57,7 +57,14 @@ > return 0; > } > break; > - > + > + case XEN_DOMCTL_MEM_EVENT_OP_PAGING_IN: > + { > + unsigned long gfn = mec->gfn; > + return p2m_mem_paging_populate(d, gfn); > + } > + break; > + > default: > return -ENOSYS; > break; > diff -r 052727b8165c -r 978daceef147 xen/arch/x86/mm/p2m.c > --- a/xen/arch/x86/mm/p2m.c Thu Dec 29 17:08:24 2011 +0800 > +++ b/xen/arch/x86/mm/p2m.c Thu Dec 29 19:41:39 2011 +0800 > @@ -874,7 +874,7 @@ > * already sent to the pager. In this case the caller has to try again until the > * gfn is fully paged in again. > */ > -void p2m_mem_paging_populate(struct domain *d, unsigned long gfn) > +int p2m_mem_paging_populate(struct domain *d, unsigned long gfn) > { > struct vcpu *v = current; > mem_event_request_t req; > @@ -882,10 +882,12 @@ > p2m_access_t a; > mfn_t mfn; > struct p2m_domain *p2m = p2m_get_hostp2m(d); > + int ret; > > /* Check that there''s space on the ring for this request */ > + ret = -ENOSPC; > if ( mem_event_check_ring(d, &d->mem_paging) ) > - return; > + goto out; > > memset(&req, 0, sizeof(req)); > req.type = MEM_EVENT_TYPE_PAGING; > @@ -905,19 +907,27 @@ > } > p2m_unlock(p2m); > > + ret = -EINVAL; > /* Pause domain if request came from guest and gfn has paging type */ > - if ( p2m_is_paging(p2mt) && v->domain->domain_id == d->domain_id ) > + if ( p2m_is_paging(p2mt) && v->domain->domain_id == d->domain_id ) > { > vcpu_pause_nosync(v); > req.flags |= MEM_EVENT_FLAG_VCPU_PAUSED; > } > /* No need to inform pager if the gfn is not in the page-out path */ > - else if ( p2mt != p2m_ram_paging_out && p2mt != p2m_ram_paged ) > + else if ( p2mt == p2m_ram_paging_in_start || p2mt == p2m_ram_paging_in ) > { > /* gfn is already on its way back and vcpu is not paused */ > mem_event_put_req_producers(&d->mem_paging); > - return; > + return 0; > } > + else if ( !p2m_is_paging(p2mt) ) > + { > + /* please clear the bit in paging->bitmap; */ > + mem_event_put_req_producers(&d->mem_paging); > + goto out; > + } > + > > /* Send request to pager */ > req.gfn = gfn; > @@ -925,8 +935,13 @@ > req.vcpu_id = v->vcpu_id; > > mem_event_put_request(d, &d->mem_paging, &req); > + > + ret = 0; > + out: > + return ret; > } > > + > /** > * p2m_mem_paging_prep - Allocate a new page for the guest > * @d: guest domain > diff -r 052727b8165c -r 978daceef147 xen/include/asm-x86/p2m.h > --- a/xen/include/asm-x86/p2m.h Thu Dec 29 17:08:24 2011 +0800 > +++ b/xen/include/asm-x86/p2m.h Thu Dec 29 19:41:39 2011 +0800 > @@ -485,7 +485,7 @@ > /* Tell xenpaging to drop a paged out frame */ > void p2m_mem_paging_drop_page(struct domain *d, unsigned long gfn); > /* Start populating a paged out frame */ > -void p2m_mem_paging_populate(struct domain *d, unsigned long gfn); > +int p2m_mem_paging_populate(struct domain *d, unsigned long gfn); > /* Prepare the p2m for paging a frame in */ > int p2m_mem_paging_prep(struct domain *d, unsigned long gfn); > /* Resume normal operation (in case a domain was paused) */ > diff -r 052727b8165c -r 978daceef147 xen/include/public/domctl.h > --- a/xen/include/public/domctl.h Thu Dec 29 17:08:24 2011 +0800 > +++ b/xen/include/public/domctl.h Thu Dec 29 19:41:39 2011 +0800 > @@ -721,6 +721,7 @@ > #define XEN_DOMCTL_MEM_EVENT_OP_PAGING_EVICT 3 > #define XEN_DOMCTL_MEM_EVENT_OP_PAGING_PREP 4 > #define XEN_DOMCTL_MEM_EVENT_OP_PAGING_RESUME 5 > +#define XEN_DOMCTL_MEM_EVENT_OP_PAGING_IN 6 > > /* > * Access permissions. >> _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel
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