# HG changeset patch
# User Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
# Date 1213081089 -32400
# Node ID fc89fb719214218c6245f632720f5105261539bd
# Parent 4af5059f4e0d8072a1dfd6740496af8d055d4443
[IA64] ia64 save/restore new formart. restore part.
Introduce ia64 save/restore new formart. restore 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_restore.c | 226 ++++++++++++++++++++++++-------
tools/libxc/ia64/xc_ia64_save_restore.h | 4
2 files changed, 182 insertions(+), 48 deletions(-)
diff -r 4af5059f4e0d -r fc89fb719214 tools/libxc/ia64/xc_ia64_linux_restore.c
--- a/tools/libxc/ia64/xc_ia64_linux_restore.c Tue Jun 10 15:54:47 2008 +0900
+++ b/tools/libxc/ia64/xc_ia64_linux_restore.c Tue Jun 10 15:58:09 2008 +0900
@@ -127,7 +127,7 @@ xc_ia64_recv_vcpu_context(int xc_handle,
fprintf(stderr, "ip=%016lx, b0=%016lx\n", ctxt->regs.ip, ctxt->regs.b[0]);
/* Initialize and set registers. */
- ctxt->flags = VGCF_EXTRA_REGS | VGCF_SET_CR_IRR;
+ ctxt->flags = VGCF_EXTRA_REGS | VGCF_SET_CR_IRR | VGCF_online;
if (xc_vcpu_setcontext(xc_handle, dom, vcpu, ctxt) != 0) {
ERROR("Couldn't set vcpu context");
return -1;
@@ -184,29 +184,57 @@ xc_ia64_recv_shared_info(int xc_handle,
}
static int
-xc_ia64_pv_recv_context(int xc_handle, int io_fd, uint32_t dom,
- unsigned long shared_info_frame,
- struct xen_ia64_p2m_table *p2m_table,
- unsigned int store_evtchn, unsigned long *store_mfn,
- unsigned int console_evtchn,
- unsigned long *console_mfn)
+xc_ia64_recv_vcpumap(const xc_dominfo_t *info, int io_fd, uint64_t **vcpumapp)
+{
+ uint64_t max_virt_cpus;
+ unsigned long vcpumap_size;
+ uint64_t *vcpumap = NULL;
+
+ *vcpumapp = NULL;
+
+ if (read_exact(io_fd, &max_virt_cpus, sizeof(max_virt_cpus))) {
+ ERROR("error reading max_virt_cpus");
+ return -1;
+ }
+ if (max_virt_cpus < info->max_vcpu_id) {
+ ERROR("too large max_virt_cpus %i < %i\n",
+ max_virt_cpus, info->max_vcpu_id);
+ return -1;
+ }
+ 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");
+ return -1;
+ }
+ memset(vcpumap, 0, vcpumap_size);
+ if (read_exact(io_fd, vcpumap, vcpumap_size)) {
+ ERROR("read vcpumap");
+ free(vcpumap);
+ return -1;
+ }
+
+ *vcpumapp = vcpumap;
+ return 0;
+}
+
+static int
+xc_ia64_pv_recv_vcpu_context(int xc_handle, int io_fd, int32_t dom,
+ uint32_t vcpu)
{
int rc = -1;
- unsigned long gmfn;
/* A copy of the CPU context of the guest. */
vcpu_guest_context_t ctxt;
-
- /* A temporary mapping of the guest's start_info page. */
- start_info_t *start_info;
-
+
if (lock_pages(&ctxt, sizeof(ctxt))) {
/* needed for build domctl, but might as well do early */
ERROR("Unable to lock_pages ctxt");
return -1;
}
- if (xc_ia64_recv_vcpu_context(xc_handle, io_fd, dom, 0, &ctxt))
+ if (xc_ia64_recv_vcpu_context(xc_handle, io_fd, dom, vcpu, &ctxt))
goto out;
/* Then get privreg page. */
@@ -215,21 +243,42 @@ xc_ia64_pv_recv_context(int xc_handle, i
goto out;
}
+ rc = 0;
+
+ out:
+ unlock_pages(&ctxt, sizeof(ctxt));
+ return rc;
+}
+
+static int
+xc_ia64_pv_recv_shared_info(int xc_handle, int io_fd, int32_t dom,
+ unsigned long shared_info_frame,
+ struct xen_ia64_p2m_table *p2m_table,
+ unsigned int store_evtchn,
+ unsigned long *store_mfn,
+ unsigned int console_evtchn,
+ unsigned long *console_mfn)
+{
+ unsigned long gmfn;
+
+ /* A temporary mapping of the guest's start_info page. */
+ start_info_t *start_info;
+
/* Read shared info. */
if (xc_ia64_recv_shared_info(xc_handle, io_fd, dom,
shared_info_frame, &gmfn))
- goto out;
+ return -1;
/* Uncanonicalise the suspend-record frame number and poke resume rec. */
if (populate_page_if_necessary(xc_handle, dom, gmfn, p2m_table)) {
ERROR("cannot populate page 0x%lx", gmfn);
- goto out;
+ return -1;
}
start_info = xc_map_foreign_range(xc_handle, dom, PAGE_SIZE,
PROT_READ | PROT_WRITE, gmfn);
if (start_info == NULL) {
ERROR("cannot map start_info page");
- goto out;
+ return -1;
}
start_info->nr_pages = p2m_size;
start_info->shared_info = shared_info_frame << PAGE_SHIFT;
@@ -240,10 +289,109 @@ xc_ia64_pv_recv_context(int xc_handle, i
start_info->console.domU.evtchn = console_evtchn;
munmap(start_info, PAGE_SIZE);
- rc = 0;
-
+ return 0;
+}
+
+static int
+xc_ia64_pv_recv_context_ver_one_or_two(int xc_handle, int io_fd, uint32_t dom,
+ unsigned long shared_info_frame,
+ struct xen_ia64_p2m_table *p2m_table,
+ unsigned int store_evtchn,
+ unsigned long *store_mfn,
+ unsigned int console_evtchn,
+ unsigned long *console_mfn)
+{
+ int rc;
+
+ /* vcpu 0 context */
+ rc = xc_ia64_pv_recv_vcpu_context(xc_handle, io_fd, dom, 0);
+ if (rc)
+ return rc;
+
+
+ /* shared_info */
+ rc = xc_ia64_pv_recv_shared_info(xc_handle, io_fd, dom, shared_info_frame,
+ p2m_table, store_evtchn, store_mfn,
+ console_evtchn, console_mfn);
+ return rc;
+}
+
+static int
+xc_ia64_pv_recv_context_ver_three(int xc_handle, int io_fd, uint32_t dom,
+ unsigned long shared_info_frame,
+ struct xen_ia64_p2m_table *p2m_table,
+ unsigned int store_evtchn,
+ unsigned long *store_mfn,
+ unsigned int console_evtchn,
+ unsigned long *console_mfn)
+{
+ int rc = -1;
+ xc_dominfo_t info;
+ unsigned int i;
+
+ /* vcpu map */
+ uint64_t *vcpumap = NULL;
+
+ if (xc_domain_getinfo(xc_handle, dom, 1, &info) != 1) {
+ ERROR("Could not get domain info");
+ return -1;
+ }
+ rc = xc_ia64_recv_vcpumap(&info, io_fd, &vcpumap);
+ if (rc != 0)
+ goto out;
+
+ /* vcpu context */
+ for (i = 0; i <= info.max_vcpu_id; i++) {
+ if (!__test_bit(i, vcpumap))
+ continue;
+
+ rc = xc_ia64_pv_recv_vcpu_context(xc_handle, io_fd, dom, i);
+ if (rc != 0)
+ goto out;
+ }
+
+ /* shared_info */
+ rc = xc_ia64_pv_recv_shared_info(xc_handle, io_fd, dom, shared_info_frame,
+ p2m_table, store_evtchn, store_mfn,
+ console_evtchn, console_mfn);
out:
- unlock_pages(&ctxt, sizeof(ctxt));
+ if (vcpumap != NULL)
+ free(vcpumap);
+ return rc;
+}
+
+static int
+xc_ia64_pv_recv_context(unsigned long format_version,
+ int xc_handle, int io_fd, uint32_t dom,
+ unsigned long shared_info_frame,
+ struct xen_ia64_p2m_table *p2m_table,
+ unsigned int store_evtchn,
+ unsigned long *store_mfn,
+ unsigned int console_evtchn,
+ unsigned long *console_mfn)
+{
+ int rc;
+ switch (format_version) {
+ case XC_IA64_SR_FORMAT_VER_ONE:
+ case XC_IA64_SR_FORMAT_VER_TWO:
+ rc = xc_ia64_pv_recv_context_ver_one_or_two(xc_handle, io_fd, dom,
+ shared_info_frame,
+ p2m_table, store_evtchn,
+ store_mfn, console_evtchn,
+ console_mfn);
+ break;
+ case XC_IA64_SR_FORMAT_VER_THREE:
+ rc = xc_ia64_pv_recv_context_ver_three(xc_handle, io_fd, dom,
+ shared_info_frame,
+ p2m_table, store_evtchn,
+ store_mfn, console_evtchn,
+ console_mfn);
+ break;
+ default:
+ ERROR("Unsupported format version");
+ rc = -1;
+ break;
+ }
return rc;
}
@@ -259,9 +407,7 @@ xc_ia64_hvm_recv_context(int xc_handle,
xc_dominfo_t info;
unsigned int i;
- /* cpu */
- uint64_t max_virt_cpus;
- unsigned long vcpumap_size;
+ /* cpumap */
uint64_t *vcpumap = NULL;
/* HVM: magic frames for ioreqs and xenstore comms */
@@ -289,27 +435,8 @@ xc_ia64_hvm_recv_context(int xc_handle,
ERROR("Could not get domain info");
goto out;
}
- if (read_exact(io_fd, &max_virt_cpus, sizeof(max_virt_cpus))) {
- ERROR("error reading max_virt_cpus");
- goto out;
- }
- if (max_virt_cpus < info.max_vcpu_id) {
- ERROR("too large max_virt_cpus %i < %i\n",
- max_virt_cpus, info.max_vcpu_id);
- goto out;
- }
- 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);
- if (read_exact(io_fd, vcpumap, vcpumap_size)) {
- ERROR("read vcpumap");
- goto out;
- }
+ if (xc_ia64_recv_vcpumap(&info, io_fd, &vcpumap))
+ goto out;
/* vcpu context */
for (i = 0; i <= info.max_vcpu_id; i++) {
@@ -322,7 +449,7 @@ xc_ia64_hvm_recv_context(int xc_handle,
if (xc_ia64_recv_vcpu_context(xc_handle, io_fd, dom, i, &ctxt))
goto out;
- // system context of vcpu is recieved as hvm context.
+ /* system context of vcpu is recieved as hvm context. */
}
/* Set HVM-specific parameters */
@@ -350,6 +477,7 @@ xc_ia64_hvm_recv_context(int xc_handle,
ERROR("error setting HVM params: %i", rc);
goto out;
}
+ rc = -1;
*store_mfn = magic_pfns[0];
/* Read HVM context */
@@ -437,7 +565,9 @@ xc_domain_restore(int xc_handle, int io_
ERROR("Error when reading version");
goto out;
}
- if (ver != XC_IA64_SR_FORMAT_VER_ONE && ver != XC_IA64_SR_FORMAT_VER_TWO) {
+ if (ver != XC_IA64_SR_FORMAT_VER_ONE &&
+ ver != XC_IA64_SR_FORMAT_VER_TWO &&
+ ver != XC_IA64_SR_FORMAT_VER_THREE) {
ERROR("version of save doesn't match");
goto out;
}
@@ -468,7 +598,8 @@ xc_domain_restore(int xc_handle, int io_
}
shared_info_frame = domctl.u.getdomaininfo.shared_info_frame;
- if (ver == XC_IA64_SR_FORMAT_VER_TWO) {
+ if (ver == XC_IA64_SR_FORMAT_VER_THREE ||
+ ver == XC_IA64_SR_FORMAT_VER_TWO) {
unsigned int memmap_info_num_pages;
unsigned long memmap_size;
xen_ia64_memmap_info_t *memmap_info;
@@ -548,7 +679,8 @@ xc_domain_restore(int xc_handle, int io_
goto out;
if (!hvm)
- rc = xc_ia64_pv_recv_context(xc_handle, io_fd, dom, shared_info_frame,
+ rc = xc_ia64_pv_recv_context(ver,
+ xc_handle, io_fd, dom, shared_info_frame,
&p2m_table, store_evtchn, store_mfn,
console_evtchn, console_mfn);
else
diff -r 4af5059f4e0d -r fc89fb719214 tools/libxc/ia64/xc_ia64_save_restore.h
--- a/tools/libxc/ia64/xc_ia64_save_restore.h Tue Jun 10 15:54:47 2008 +0900
+++ b/tools/libxc/ia64/xc_ia64_save_restore.h Tue Jun 10 15:58:09 2008 +0900
@@ -27,7 +27,9 @@
#define XC_IA64_SR_FORMAT_VER_ONE 1UL
/* using foreign p2m exposure version */
#define XC_IA64_SR_FORMAT_VER_TWO 2UL
-#define XC_IA64_SR_FORMAT_VER_MAX 2UL
+ /* only pv change: send vcpumap and all vcpu context */
+#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
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