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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [HVM] Save/restore: move save/restore routines out of intercept.c
# HG changeset patch
# User Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>
# Date 1170843675 0
# Node ID 710aec0abb613a545ed9f2f41c7e130f1556494c
# Parent 67faf6c59bfa2f8bf6a1ad0a6db3ab66003f2b11
[HVM] Save/restore: move save/restore routines out of intercept.c
Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>
---
xen/arch/x86/hvm/Makefile | 1
xen/arch/x86/hvm/intercept.c | 176 -------------------------------------
xen/arch/x86/hvm/save.c | 204 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 205 insertions(+), 176 deletions(-)
diff -r 67faf6c59bfa -r 710aec0abb61 xen/arch/x86/hvm/Makefile
--- a/xen/arch/x86/hvm/Makefile Wed Feb 07 12:25:18 2007 +0000
+++ b/xen/arch/x86/hvm/Makefile Wed Feb 07 10:21:15 2007 +0000
@@ -15,3 +15,4 @@ obj-y += vioapic.o
obj-y += vioapic.o
obj-y += vlapic.o
obj-y += vpic.o
+obj-y += save.o
diff -r 67faf6c59bfa -r 710aec0abb61 xen/arch/x86/hvm/intercept.c
--- a/xen/arch/x86/hvm/intercept.c Wed Feb 07 12:25:18 2007 +0000
+++ b/xen/arch/x86/hvm/intercept.c Wed Feb 07 10:21:15 2007 +0000
@@ -29,8 +29,6 @@
#include <asm/current.h>
#include <io_ports.h>
#include <xen/event.h>
-#include <xen/compile.h>
-#include <public/version.h>
extern struct hvm_mmio_handler hpet_mmio_handler;
@@ -157,180 +155,6 @@ static inline void hvm_mmio_access(struc
}
}
-/* List of handlers for various HVM save and restore types */
-static struct {
- hvm_save_handler save;
- hvm_load_handler load;
- const char *name;
-} hvm_sr_handlers [HVM_SAVE_CODE_MAX + 1] = {{NULL, NULL, "<?>"},};
-
-/* Init-time function to add entries to that list */
-void hvm_register_savevm(uint16_t typecode,
- const char *name,
- hvm_save_handler save_state,
- hvm_load_handler load_state)
-{
- ASSERT(typecode <= HVM_SAVE_CODE_MAX);
- ASSERT(hvm_sr_handlers[typecode].save == NULL);
- ASSERT(hvm_sr_handlers[typecode].load == NULL);
- hvm_sr_handlers[typecode].save = save_state;
- hvm_sr_handlers[typecode].load = load_state;
- hvm_sr_handlers[typecode].name = name;
-}
-
-
-int hvm_save(struct domain *d, hvm_domain_context_t *h)
-{
- uint32_t eax, ebx, ecx, edx;
- char *c;
- struct hvm_save_header hdr;
- struct hvm_save_end end;
- hvm_save_handler handler;
- uint16_t i;
-
- hdr.magic = HVM_FILE_MAGIC;
- hdr.version = HVM_FILE_VERSION;
-
- /* Save some CPUID bits */
- cpuid(1, &eax, &ebx, &ecx, &edx);
- hdr.cpuid = eax;
-
- /* Save xen changeset */
- c = strrchr(XEN_CHANGESET, ':');
- if ( c )
- hdr.changeset = simple_strtoll(c, NULL, 16);
- else
- hdr.changeset = -1ULL; /* Unknown */
-
- if ( hvm_save_entry(HEADER, 0, h, &hdr) != 0 )
- {
- gdprintk(XENLOG_ERR, "HVM save: failed to write header\n");
- return -EFAULT;
- }
-
- /* Save all available kinds of state */
- for ( i = 0; i <= HVM_SAVE_CODE_MAX; i++ )
- {
- handler = hvm_sr_handlers[i].save;
- if ( handler != NULL )
- {
- gdprintk(XENLOG_INFO, "HVM save: %s\n", hvm_sr_handlers[i].name);
- if ( handler(d, h) != 0 )
- {
- gdprintk(XENLOG_ERR,
- "HVM save: failed to save type %"PRIu16"\n", i);
- return -EFAULT;
- }
- }
- }
-
- /* Save an end-of-file marker */
- if ( hvm_save_entry(END, 0, h, &end) != 0 )
- {
- /* Run out of data */
- gdprintk(XENLOG_ERR, "HVM save: no room for end marker.\n");
- return -EFAULT;
- }
-
- /* Save macros should not have let us overrun */
- ASSERT(h->cur <= h->size);
- return 0;
-}
-
-int hvm_load(struct domain *d, hvm_domain_context_t *h)
-{
- uint32_t eax, ebx, ecx, edx;
- char *c;
- uint64_t cset;
- struct hvm_save_header hdr;
- struct hvm_save_descriptor *desc;
- hvm_load_handler handler;
- struct vcpu *v;
-
- /* Read the save header, which must be first */
- if ( hvm_load_entry(HEADER, h, &hdr) != 0 )
- return -1;
-
- if (hdr.magic != HVM_FILE_MAGIC) {
- gdprintk(XENLOG_ERR,
- "HVM restore: bad magic number %#"PRIx32"\n", hdr.magic);
- return -1;
- }
-
- if (hdr.version != HVM_FILE_VERSION) {
- gdprintk(XENLOG_ERR,
- "HVM restore: unsupported version %u\n", hdr.version);
- return -1;
- }
-
- cpuid(1, &eax, &ebx, &ecx, &edx);
- /*TODO: need to define how big a difference is acceptable */
- if (hdr.cpuid != eax)
- gdprintk(XENLOG_WARNING, "HVM restore: saved CPUID (%#"PRIx32") "
- "does not match host (%#"PRIx32").\n", hdr.cpuid, eax);
-
-
- c = strrchr(XEN_CHANGESET, ':');
- if ( hdr.changeset == -1ULL )
- gdprintk(XENLOG_WARNING,
- "HVM restore: Xen changeset was not saved.\n");
- else if ( c == NULL )
- gdprintk(XENLOG_WARNING,
- "HVM restore: Xen changeset is not available.\n");
- else
- {
- cset = simple_strtoll(c, NULL, 16);
- if ( hdr.changeset != cset )
- gdprintk(XENLOG_WARNING, "HVM restore: saved Xen changeset (%#"PRIx64
- ") does not match host (%#"PRIx64").\n", hdr.changeset, cset);
- }
-
- /* Down all the vcpus: we only re-enable the ones that had state saved. */
- for_each_vcpu(d, v)
- if ( test_and_set_bit(_VCPUF_down, &v->vcpu_flags) )
- vcpu_sleep_nosync(v);
-
- while(1) {
-
- if ( h->size - h->cur < sizeof(struct hvm_save_descriptor) )
- {
- /* Run out of data */
- gdprintk(XENLOG_ERR,
- "HVM restore: save did not end with a null entry\n");
- return -1;
- }
-
- /* Read the typecode of the next entry and check for the end-marker */
- desc = (struct hvm_save_descriptor *)(&h->data[h->cur]);
- if ( desc->typecode == 0 )
- return 0;
-
- /* Find the handler for this entry */
- if ( desc->typecode > HVM_SAVE_CODE_MAX
- || (handler = hvm_sr_handlers[desc->typecode].load) == NULL )
- {
- gdprintk(XENLOG_ERR,
- "HVM restore: unknown entry typecode %u\n",
- desc->typecode);
- return -1;
- }
-
- /* Load the entry */
- gdprintk(XENLOG_INFO, "HVM restore: %s %"PRIu16"\n",
- hvm_sr_handlers[desc->typecode].name, desc->instance);
- if ( handler(d, h) != 0 )
- {
- gdprintk(XENLOG_ERR,
- "HVM restore: failed to load entry %u/%u\n",
- desc->typecode, desc->instance);
- return -1;
- }
- }
-
- /* Not reached */
-}
-
-
int hvm_buffered_io_intercept(ioreq_t *p)
{
struct vcpu *v = current;
diff -r 67faf6c59bfa -r 710aec0abb61 xen/arch/x86/hvm/save.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/arch/x86/hvm/save.c Wed Feb 07 10:21:15 2007 +0000
@@ -0,0 +1,204 @@
+/*
+ * hvm/save.c: Save and restore HVM guest's emulated hardware state.
+ *
+ * Copyright (c) 2004, Intel Corporation.
+ * Copyright (c) 2007, XenSource Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <xen/config.h>
+#include <xen/compile.h>
+#include <xen/lib.h>
+#include <public/version.h>
+#include <xen/sched.h>
+
+#include <asm/hvm/hvm.h>
+#include <asm/hvm/support.h>
+#include <asm/hvm/domain.h>
+#include <asm/current.h>
+
+
+/* List of handlers for various HVM save and restore types */
+static struct {
+ hvm_save_handler save;
+ hvm_load_handler load;
+ const char *name;
+} hvm_sr_handlers [HVM_SAVE_CODE_MAX + 1] = {{NULL, NULL, "<?>"},};
+
+/* Init-time function to add entries to that list */
+void hvm_register_savevm(uint16_t typecode,
+ const char *name,
+ hvm_save_handler save_state,
+ hvm_load_handler load_state)
+{
+ ASSERT(typecode <= HVM_SAVE_CODE_MAX);
+ ASSERT(hvm_sr_handlers[typecode].save == NULL);
+ ASSERT(hvm_sr_handlers[typecode].load == NULL);
+ hvm_sr_handlers[typecode].save = save_state;
+ hvm_sr_handlers[typecode].load = load_state;
+ hvm_sr_handlers[typecode].name = name;
+}
+
+
+int hvm_save(struct domain *d, hvm_domain_context_t *h)
+{
+ uint32_t eax, ebx, ecx, edx;
+ char *c;
+ struct hvm_save_header hdr;
+ struct hvm_save_end end;
+ hvm_save_handler handler;
+ uint16_t i;
+
+ hdr.magic = HVM_FILE_MAGIC;
+ hdr.version = HVM_FILE_VERSION;
+
+ /* Save some CPUID bits */
+ cpuid(1, &eax, &ebx, &ecx, &edx);
+ hdr.cpuid = eax;
+
+ /* Save xen changeset */
+ c = strrchr(XEN_CHANGESET, ':');
+ if ( c )
+ hdr.changeset = simple_strtoll(c, NULL, 16);
+ else
+ hdr.changeset = -1ULL; /* Unknown */
+
+ if ( hvm_save_entry(HEADER, 0, h, &hdr) != 0 )
+ {
+ gdprintk(XENLOG_ERR, "HVM save: failed to write header\n");
+ return -EFAULT;
+ }
+
+ /* Save all available kinds of state */
+ for ( i = 0; i <= HVM_SAVE_CODE_MAX; i++ )
+ {
+ handler = hvm_sr_handlers[i].save;
+ if ( handler != NULL )
+ {
+ gdprintk(XENLOG_INFO, "HVM save: %s\n", hvm_sr_handlers[i].name);
+ if ( handler(d, h) != 0 )
+ {
+ gdprintk(XENLOG_ERR,
+ "HVM save: failed to save type %"PRIu16"\n", i);
+ return -EFAULT;
+ }
+ }
+ }
+
+ /* Save an end-of-file marker */
+ if ( hvm_save_entry(END, 0, h, &end) != 0 )
+ {
+ /* Run out of data */
+ gdprintk(XENLOG_ERR, "HVM save: no room for end marker.\n");
+ return -EFAULT;
+ }
+
+ /* Save macros should not have let us overrun */
+ ASSERT(h->cur <= h->size);
+ return 0;
+}
+
+int hvm_load(struct domain *d, hvm_domain_context_t *h)
+{
+ uint32_t eax, ebx, ecx, edx;
+ char *c;
+ uint64_t cset;
+ struct hvm_save_header hdr;
+ struct hvm_save_descriptor *desc;
+ hvm_load_handler handler;
+ struct vcpu *v;
+
+ /* Read the save header, which must be first */
+ if ( hvm_load_entry(HEADER, h, &hdr) != 0 )
+ return -1;
+
+ if (hdr.magic != HVM_FILE_MAGIC) {
+ gdprintk(XENLOG_ERR,
+ "HVM restore: bad magic number %#"PRIx32"\n", hdr.magic);
+ return -1;
+ }
+
+ if (hdr.version != HVM_FILE_VERSION) {
+ gdprintk(XENLOG_ERR,
+ "HVM restore: unsupported version %u\n", hdr.version);
+ return -1;
+ }
+
+ cpuid(1, &eax, &ebx, &ecx, &edx);
+ /*TODO: need to define how big a difference is acceptable */
+ if (hdr.cpuid != eax)
+ gdprintk(XENLOG_WARNING, "HVM restore: saved CPUID (%#"PRIx32") "
+ "does not match host (%#"PRIx32").\n", hdr.cpuid, eax);
+
+
+ c = strrchr(XEN_CHANGESET, ':');
+ if ( hdr.changeset == -1ULL )
+ gdprintk(XENLOG_WARNING,
+ "HVM restore: Xen changeset was not saved.\n");
+ else if ( c == NULL )
+ gdprintk(XENLOG_WARNING,
+ "HVM restore: Xen changeset is not available.\n");
+ else
+ {
+ cset = simple_strtoll(c, NULL, 16);
+ if ( hdr.changeset != cset )
+ gdprintk(XENLOG_WARNING, "HVM restore: saved Xen changeset (%#"PRIx64
+ ") does not match host (%#"PRIx64").\n", hdr.changeset, cset);
+ }
+
+ /* Down all the vcpus: we only re-enable the ones that had state saved. */
+ for_each_vcpu(d, v)
+ if ( test_and_set_bit(_VCPUF_down, &v->vcpu_flags) )
+ vcpu_sleep_nosync(v);
+
+ while(1) {
+
+ if ( h->size - h->cur < sizeof(struct hvm_save_descriptor) )
+ {
+ /* Run out of data */
+ gdprintk(XENLOG_ERR,
+ "HVM restore: save did not end with a null entry\n");
+ return -1;
+ }
+
+ /* Read the typecode of the next entry and check for the end-marker */
+ desc = (struct hvm_save_descriptor *)(&h->data[h->cur]);
+ if ( desc->typecode == 0 )
+ return 0;
+
+ /* Find the handler for this entry */
+ if ( desc->typecode > HVM_SAVE_CODE_MAX
+ || (handler = hvm_sr_handlers[desc->typecode].load) == NULL )
+ {
+ gdprintk(XENLOG_ERR,
+ "HVM restore: unknown entry typecode %u\n",
+ desc->typecode);
+ return -1;
+ }
+
+ /* Load the entry */
+ gdprintk(XENLOG_INFO, "HVM restore: %s %"PRIu16"\n",
+ hvm_sr_handlers[desc->typecode].name, desc->instance);
+ if ( handler(d, h) != 0 )
+ {
+ gdprintk(XENLOG_ERR,
+ "HVM restore: failed to load entry %u/%u\n",
+ desc->typecode, desc->instance);
+ return -1;
+ }
+ }
+
+ /* Not reached */
+}
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