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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-ia64-devel] [PATCH 3/3] pv_ops save/restore save part
# 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>
diff --git a/tools/libxc/ia64/xc_ia64_linux_save.c
b/tools/libxc/ia64/xc_ia64_linux_save.c
--- a/tools/libxc/ia64/xc_ia64_linux_save.c
+++ b/tools/libxc/ia64/xc_ia64_linux_save.c
@@ -207,68 +207,15 @@
}
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)");
- 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;
-}
-
-static int
-xc_ia64_hvm_send_context(int xc_handle, int io_fd, uint32_t dom,
- const xc_dominfo_t *info, shared_info_t *live_shinfo)
+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;
-
- /* vcpu map */
- uint64_t max_virt_cpus;
unsigned long vcpumap_size;
uint64_t *vcpumap = NULL;
- /* HVM: magic frames for ioreqs and xenstore comms */
- const int hvm_params[] = {
- HVM_PARAM_STORE_PFN,
- HVM_PARAM_IOREQ_PFN,
- HVM_PARAM_BUFIOREQ_PFN,
- HVM_PARAM_BUFPIOREQ_PFN,
- };
- const int NR_PARAMS = sizeof(hvm_params) / sizeof(hvm_params[0]);
- /* ioreq_pfn, bufioreq_pfn, store_pfn */
- uint64_t magic_pfns[NR_PARAMS];
-
- /* HVM: a buffer for holding HVM contxt */
- uint64_t rec_size;
- uint64_t hvm_buf_size = 0;
- uint8_t *hvm_buf = NULL;
-
- if (xc_ia64_send_shared_info(xc_handle, io_fd, live_shinfo))
- 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);
@@ -294,6 +241,99 @@
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,
+ 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);
+ }
+
+ rc = xc_ia64_send_shared_info(xc_handle, io_fd, live_shinfo);
+
+ out:
+ if (vcpumap != NULL)
+ free(vcpumap);
+ return rc;
+}
+
+static int
+xc_ia64_hvm_send_context(int xc_handle, int io_fd, uint32_t dom,
+ const xc_dominfo_t *info, shared_info_t *live_shinfo)
+{
+ int rc = -1;
+ unsigned int i;
+
+ /* vcpu map */
+ uint64_t *vcpumap = NULL;
+
+ /* HVM: magic frames for ioreqs and xenstore comms */
+ const int hvm_params[] = {
+ HVM_PARAM_STORE_PFN,
+ HVM_PARAM_IOREQ_PFN,
+ HVM_PARAM_BUFIOREQ_PFN,
+ HVM_PARAM_BUFPIOREQ_PFN,
+ };
+ const int NR_PARAMS = sizeof(hvm_params) / sizeof(hvm_params[0]);
+ /* ioreq_pfn, bufioreq_pfn, store_pfn */
+ uint64_t magic_pfns[NR_PARAMS];
+
+ /* HVM: a buffer for holding HVM contxt */
+ uint64_t rec_size;
+ uint64_t hvm_buf_size = 0;
+ uint8_t *hvm_buf = NULL;
+
+ if (xc_ia64_send_shared_info(xc_handle, io_fd, live_shinfo))
+ return -1;
+
+ /* vcpu map */
+ 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. */
@@ -305,7 +345,7 @@
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 @@
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 --git a/tools/libxc/ia64/xc_ia64_save_restore.h
b/tools/libxc/ia64/xc_ia64_save_restore.h
--- a/tools/libxc/ia64/xc_ia64_save_restore.h
+++ b/tools/libxc/ia64/xc_ia64_save_restore.h
@@ -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
Attachment:
17772_1201c7657832.patch _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-ia64-devel
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