Mailing List Archive

tools/libxc/xc_mem_event.c | 4 ++--
tools/libxc/xc_mem_paging.c | 23 +++++++++++++++++++++++
tools/libxc/xenctrl.h | 2 ++
3 files changed, 27 insertions(+), 2 deletions(-)


Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>

diff -r 0ce71e5bfaac -r 15da109b0c7d tools/libxc/xc_mem_event.c
--- a/tools/libxc/xc_mem_event.c
+++ b/tools/libxc/xc_mem_event.c
@@ -24,7 +24,7 @@
#include "xc_private.h"

int xc_mem_event_control(xc_interface *xch, domid_t domain_id, unsigned int op,
- unsigned int mode, void *shared_page,
+ unsigned int mode, void *page,
void *ring_page, unsigned long gfn)
{
DECLARE_DOMCTL;
@@ -34,7 +34,7 @@ int xc_mem_event_control(xc_interface *x
domctl.u.mem_event_op.op = op;
domctl.u.mem_event_op.mode = mode;

- domctl.u.mem_event_op.shared_addr = (unsigned long)shared_page;
+ domctl.u.mem_event_op.u.shared_addr = (unsigned long)page;
domctl.u.mem_event_op.ring_addr = (unsigned long)ring_page;

domctl.u.mem_event_op.gfn = gfn;
diff -r 0ce71e5bfaac -r 15da109b0c7d tools/libxc/xc_mem_paging.c
--- a/tools/libxc/xc_mem_paging.c
+++ b/tools/libxc/xc_mem_paging.c
@@ -65,6 +65,29 @@ int xc_mem_paging_prep(xc_interface *xch
NULL, NULL, gfn);
}

+int xc_mem_paging_load(xc_interface *xch, domid_t domain_id,
+ unsigned long gfn, void *buffer)
+{
+ int rc;
+
+ if ( !buffer )
+ return -EINVAL;
+
+ if ( ((unsigned long) buffer) & (XC_PAGE_SIZE - 1) )
+ return -EINVAL;
+
+ if ( mlock(buffer, XC_PAGE_SIZE) )
+ return -errno;
+
+ rc = xc_mem_event_control(xch, domain_id,
+ XEN_DOMCTL_MEM_EVENT_OP_PAGING_PREP,
+ XEN_DOMCTL_MEM_EVENT_OP_PAGING,
+ buffer, NULL, gfn);
+
+ (void)munlock(buffer, XC_PAGE_SIZE);
+ return rc;
+}
+
int xc_mem_paging_resume(xc_interface *xch, domid_t domain_id, unsigned long gfn)
{
return xc_mem_event_control(xch, domain_id,
diff -r 0ce71e5bfaac -r 15da109b0c7d tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h
+++ b/tools/libxc/xenctrl.h
@@ -1866,6 +1866,8 @@ int xc_mem_paging_nominate(xc_interface
unsigned long gfn);
int xc_mem_paging_evict(xc_interface *xch, domid_t domain_id, unsigned long gfn);
int xc_mem_paging_prep(xc_interface *xch, domid_t domain_id, unsigned long gfn);
+int xc_mem_paging_load(xc_interface *xch, domid_t domain_id,
+ unsigned long gfn, void *buffer);
int xc_mem_paging_resume(xc_interface *xch, domid_t domain_id,
unsigned long gfn);


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