Mailing List Archive

Do not allocate RAM during pre-migration runstate.
Do not actually "do" set_memory during migration.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---
xen-all.c | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/xen-all.c b/xen-all.c
index b2e9853..c1fed87 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -189,6 +189,11 @@ void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size)

trace_xen_ram_alloc(ram_addr, size);

+ if (runstate_check(RUN_STATE_PREMIGRATE)) {
+ /* RAM already populated in Xen */
+ return;
+ }
+
nr_pfn = size >> TARGET_PAGE_BITS;
pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);

@@ -269,6 +274,13 @@ go_physmap:
DPRINTF("mapping vram to %llx - %llx, from %llx\n",
start_addr, start_addr + size, phys_offset);

+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ /* The mapping should already be done and can not be done a second
+ * time. So we just add to the physmap list instead.
+ */
+ goto done;
+ }
+
pfn = phys_offset >> TARGET_PAGE_BITS;
start_gpfn = start_addr >> TARGET_PAGE_BITS;
for (i = 0; i < size >> TARGET_PAGE_BITS; i++) {
@@ -283,6 +295,7 @@ go_physmap:
}
}

+done:
physmap = g_malloc(sizeof (XenPhysmap));

physmap->start_addr = start_addr;
--
Anthony PERARD


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