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[Qemu-devel] [PATCH v4 6/6] xen: change memory access behavior during mi
From: |
Stefano Stabellini |
Subject: |
[Qemu-devel] [PATCH v4 6/6] xen: change memory access behavior during migration. |
Date: |
Fri, 20 Jan 2012 17:21:25 +0000 |
From: Anthony PERARD <address@hidden>
Do not allocate RAM during INMIGRATE runstate.
Do not actually "do" set_memory during migration.
Signed-off-by: Anthony PERARD <address@hidden>
Signed-off-by: Stefano Stabellini <address@hidden>
---
xen-all.c | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/xen-all.c b/xen-all.c
index bb66c82..9a80c30 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -190,6 +190,14 @@ void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
MemoryRegion *mr)
xen_pfn_t *pfn_list;
int i;
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ /* RAM already populated in Xen */
+ fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
+ " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
+ __func__, size, ram_addr);
+ return;
+ }
+
if (mr == &ram_memory) {
return;
}
@@ -255,6 +263,14 @@ static int xen_add_to_physmap(XenIOState *state,
target_phys_addr_t phys_offset = memory_region_get_ram_addr(mr);
char path[80], value[17];
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ fprintf(stderr, "%s: do not add "RAM_ADDR_FMT
+ " bytes of ram to physmap at "RAM_ADDR_FMT
+ " when runstate is INMIGRATE\n",
+ __func__, size, start_addr);
+ return 0;
+ }
+
if (get_physmapping(state, start_addr, size)) {
return 0;
}
--
1.7.2.5
- [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Stefano Stabellini, 2012/01/20
- [Qemu-devel] [PATCH v4 2/6] xen mapcache: check if memory region has moved., Stefano Stabellini, 2012/01/20
- [Qemu-devel] [PATCH v4 1/6] vl.c: do not save the RAM state when Xen is enabled, Stefano Stabellini, 2012/01/20
- [Qemu-devel] [PATCH v4 3/6] Set runstate to INMIGRATE earlier, Stefano Stabellini, 2012/01/20
- [Qemu-devel] [PATCH v4 5/6] xen: record physmap changes to xenstore, Stefano Stabellini, 2012/01/20
- [Qemu-devel] [PATCH v4 6/6] xen: change memory access behavior during migration.,
Stefano Stabellini <=
- [Qemu-devel] [PATCH v4 4/6] cirrus_vga: do not reset videoram on resume, Stefano Stabellini, 2012/01/20
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Jan Kiszka, 2012/01/20
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Stefano Stabellini, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Jan Kiszka, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Stefano Stabellini, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Jan Kiszka, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Stefano Stabellini, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Jan Kiszka, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Stefano Stabellini, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Anthony Liguori, 2012/01/23