# HG changeset patch
# User Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
# Date 1213081233 -32400
# Node ID 1201c765783217371166062621e8926cb7643cfd
# Parent fc89fb719214218c6245f632720f5105261539bd
[IA64] ia64 save/restore new formart. save part.
Introduce ia64 save/restore new formart. save part.
The formart twist is necessary for pv_ops linux support saving/restoring
all of the online vcpu context.
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
---
tools/libxc/ia64/xc_ia64_linux_save.c | 149 ++++++++++++++++++++------------
tools/libxc/ia64/xc_ia64_save_restore.h | 2
2 files changed, 96 insertions(+), 55 deletions(-)
diff -r fc89fb719214 -r 1201c7657832 tools/libxc/ia64/xc_ia64_linux_save.c
--- a/tools/libxc/ia64/xc_ia64_linux_save.c Tue Jun 10 15:58:09 2008 +0900
+++ b/tools/libxc/ia64/xc_ia64_linux_save.c Tue Jun 10 16:00:33 2008 +0900
@@ -207,33 +207,97 @@ xc_ia64_send_shared_info(int xc_handle,
}
static int
+xc_ia64_send_vcpumap(int xc_handle, int io_fd, uint32_t dom,
+ const xc_dominfo_t *info, uint64_t max_virt_cpus,
+ uint64_t **vcpumapp)
+{
+ int rc = -1;
+ unsigned int i;
+ unsigned long vcpumap_size;
+ uint64_t *vcpumap = NULL;
+
+ vcpumap_size = (max_virt_cpus + 1 + sizeof(vcpumap[0]) - 1) /
+ sizeof(vcpumap[0]);
+ vcpumap = malloc(vcpumap_size);
+ if (vcpumap == NULL) {
+ ERROR("memory alloc for vcpumap");
+ goto out;
+ }
+ memset(vcpumap, 0, vcpumap_size);
+
+ for (i = 0; i <= info->max_vcpu_id; i++) {
+ xc_vcpuinfo_t vinfo;
+ if ((xc_vcpu_getinfo(xc_handle, dom, i, &vinfo) == 0) && vinfo.online)
+ __set_bit(i, vcpumap);
+ }
+
+ if (write_exact(io_fd, &max_virt_cpus, sizeof(max_virt_cpus))) {
+ ERROR("write max_virt_cpus");
+ goto out;
+ }
+
+ if (write_exact(io_fd, vcpumap, vcpumap_size)) {
+ ERROR("write vcpumap");
+ goto out;
+ }
+
+ rc = 0;
+
+ out:
+ if (rc != 0 && vcpumap != NULL) {
+ free(vcpumap);
+ vcpumap = NULL;
+ }
+ *vcpumapp = vcpumap;
+ return rc;
+}
+
+
+static int
xc_ia64_pv_send_context(int xc_handle, int io_fd, uint32_t dom,
- shared_info_t *live_shinfo)
-{
- /* A copy of the CPU context of the guest. */
- vcpu_guest_context_t ctxt;
- char *mem;
-
- if (xc_ia64_send_vcpu_context(xc_handle, io_fd, dom, 0, &ctxt))
- return -1;
-
- mem = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
- PROT_READ|PROT_WRITE, ctxt.privregs_pfn);
- if (mem == NULL) {
- ERROR("cannot map privreg page");
- return -1;
- }
- if (write_exact(io_fd, mem, PAGE_SIZE)) {
- ERROR("Error when writing privreg to state file (5)");
+ const xc_dominfo_t *info, shared_info_t *live_shinfo)
+{
+ int rc = -1;
+ unsigned int i;
+
+ /* vcpu map */
+ uint64_t *vcpumap = NULL;
+ if (xc_ia64_send_vcpumap(xc_handle, io_fd, dom, info, MAX_VIRT_CPUS,
+ &vcpumap))
+ goto out;
+
+ /* vcpu context */
+ for (i = 0; i <= info->max_vcpu_id; i++) {
+ /* A copy of the CPU context of the guest. */
+ vcpu_guest_context_t ctxt;
+ char *mem;
+
+ if (!__test_bit(i, vcpumap))
+ continue;
+
+ if (xc_ia64_send_vcpu_context(xc_handle, io_fd, dom, i, &ctxt))
+ goto out;
+
+ mem = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
+ PROT_READ|PROT_WRITE, ctxt.privregs_pfn);
+ if (mem == NULL) {
+ ERROR("cannot map privreg page");
+ goto out;
+ }
+ if (write_exact(io_fd, mem, PAGE_SIZE)) {
+ ERROR("Error when writing privreg to state file (5)");
+ munmap(mem, PAGE_SIZE);
+ goto out;
+ }
munmap(mem, PAGE_SIZE);
- return -1;
- }
- munmap(mem, PAGE_SIZE);
-
- if (xc_ia64_send_shared_info(xc_handle, io_fd, live_shinfo))
- return -1;
-
- return 0;
+ }
+
+ rc = xc_ia64_send_shared_info(xc_handle, io_fd, live_shinfo);
+
+ out:
+ if (vcpumap != NULL)
+ free(vcpumap);
+ return rc;
}
static int
@@ -244,8 +308,6 @@ xc_ia64_hvm_send_context(int xc_handle,
unsigned int i;
/* vcpu map */
- uint64_t max_virt_cpus;
- unsigned long vcpumap_size;
uint64_t *vcpumap = NULL;
/* HVM: magic frames for ioreqs and xenstore comms */
@@ -268,31 +330,9 @@ xc_ia64_hvm_send_context(int xc_handle,
return -1;
/* vcpu map */
- max_virt_cpus = MAX_VIRT_CPUS;
- vcpumap_size = (max_virt_cpus + 1 + sizeof(vcpumap[0]) - 1) /
- sizeof(vcpumap[0]);
- vcpumap = malloc(vcpumap_size);
- if (vcpumap == NULL) {
- ERROR("memory alloc for vcpumap");
- goto out;
- }
- memset(vcpumap, 0, vcpumap_size);
-
- for (i = 0; i <= info->max_vcpu_id; i++) {
- xc_vcpuinfo_t vinfo;
- if ((xc_vcpu_getinfo(xc_handle, dom, i, &vinfo) == 0) && vinfo.online)
- __set_bit(i, vcpumap);
- }
-
- if (write_exact(io_fd, &max_virt_cpus, sizeof(max_virt_cpus))) {
- ERROR("write max_virt_cpus");
- goto out;
- }
-
- if (write_exact(io_fd, vcpumap, vcpumap_size)) {
- ERROR("write vcpumap");
- goto out;
- }
+ if (xc_ia64_send_vcpumap(xc_handle, io_fd, dom, info, MAX_VIRT_CPUS,
+ &vcpumap))
+ goto out;
/* vcpu context */
for (i = 0; i <= info->max_vcpu_id; i++) {
@@ -305,7 +345,7 @@ xc_ia64_hvm_send_context(int xc_handle,
if (xc_ia64_send_vcpu_context(xc_handle, io_fd, dom, i, &ctxt))
goto out;
- // system context of vcpu is sent as hvm context.
+ /* system context of vcpu is sent as hvm context. */
}
/* Save magic-page locations. */
@@ -733,7 +773,8 @@ xc_domain_save(int xc_handle, int io_fd,
goto out;
if (!hvm)
- rc = xc_ia64_pv_send_context(xc_handle, io_fd, dom, live_shinfo);
+ rc = xc_ia64_pv_send_context(xc_handle, io_fd,
+ dom, &info, live_shinfo);
else
rc = xc_ia64_hvm_send_context(xc_handle, io_fd,
dom, &info, live_shinfo);
diff -r fc89fb719214 -r 1201c7657832 tools/libxc/ia64/xc_ia64_save_restore.h
--- a/tools/libxc/ia64/xc_ia64_save_restore.h Tue Jun 10 15:58:09 2008 +0900
+++ b/tools/libxc/ia64/xc_ia64_save_restore.h Tue Jun 10 16:00:33 2008 +0900
@@ -31,7 +31,7 @@
#define XC_IA64_SR_FORMAT_VER_THREE 3UL
#define XC_IA64_SR_FORMAT_VER_MAX 3UL
-#define XC_IA64_SR_FORMAT_VER_CURRENT XC_IA64_SR_FORMAT_VER_TWO
+#define XC_IA64_SR_FORMAT_VER_CURRENT XC_IA64_SR_FORMAT_VER_THREE
/*
** During (live) save/migrate, we maintain a number of bitmaps to track
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