From: Anthony PERARD <anthony.perard@citrix.com> To: QEMU-devel <qemu-devel@nongnu.org> Cc: Anthony PERARD <anthony.perard@citrix.com>, Xen Devel <xen-devel@lists.xensource.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com> Subject: [Qemu-devel] [PATCH V2 4/5] xen: Change memory access behavior during migration. Date: Fri, 9 Dec 2011 21:54:04 +0000 [thread overview] Message-ID: <1323467645-24271-5-git-send-email-anthony.perard@citrix.com> (raw) In-Reply-To: <1323467645-24271-1-git-send-email-anthony.perard@citrix.com> 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
WARNING: multiple messages have this Message-ID (diff)
From: Anthony PERARD <anthony.perard@citrix.com> To: QEMU-devel <qemu-devel@nongnu.org> Cc: Anthony PERARD <anthony.perard@citrix.com>, Xen Devel <xen-devel@lists.xensource.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com> Subject: [PATCH V2 4/5] xen: Change memory access behavior during migration. Date: Fri, 9 Dec 2011 21:54:04 +0000 [thread overview] Message-ID: <1323467645-24271-5-git-send-email-anthony.perard@citrix.com> (raw) In-Reply-To: <1323467645-24271-1-git-send-email-anthony.perard@citrix.com> 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
next prev parent reply other threads:[~2011-12-09 21:54 UTC|newest] Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-12-09 21:54 [Qemu-devel] [PATCH V2 0/5] Have a working migration with Xen Anthony PERARD 2011-12-09 21:54 ` Anthony PERARD 2011-12-09 21:54 ` [Qemu-devel] [PATCH V2 1/5] vl.c: Do not save RAM state when Xen is used Anthony PERARD 2011-12-09 21:54 ` Anthony PERARD 2011-12-15 15:12 ` [Qemu-devel] " Anthony Liguori 2011-12-15 15:12 ` Anthony Liguori 2011-12-18 17:44 ` [Qemu-devel] " Avi Kivity 2011-12-18 17:44 ` Avi Kivity 2011-12-20 16:46 ` [Qemu-devel] " Anthony PERARD 2011-12-20 16:46 ` Anthony PERARD 2011-12-09 21:54 ` [Qemu-devel] [PATCH V2 2/5] xen mapcache: Check if a memory space has moved Anthony PERARD 2011-12-09 21:54 ` Anthony PERARD 2011-12-12 12:53 ` [Qemu-devel] " Stefano Stabellini 2011-12-12 12:53 ` Stefano Stabellini 2011-12-09 21:54 ` [Qemu-devel] [PATCH V2 3/5] Introduce premigrate RunState Anthony PERARD 2011-12-09 21:54 ` Anthony PERARD 2011-12-15 15:14 ` [Qemu-devel] " Anthony Liguori 2011-12-15 15:14 ` Anthony Liguori 2011-12-15 16:31 ` [Qemu-devel] " Luiz Capitulino 2011-12-15 16:31 ` Luiz Capitulino 2011-12-19 17:27 ` [Qemu-devel] " Anthony PERARD 2011-12-19 17:27 ` Anthony PERARD 2012-01-03 19:05 ` [Qemu-devel] " Luiz Capitulino 2012-01-03 19:05 ` Luiz Capitulino 2012-01-05 12:26 ` [Qemu-devel] " Anthony PERARD 2012-01-05 12:26 ` Anthony PERARD 2011-12-09 21:54 ` Anthony PERARD [this message] 2011-12-09 21:54 ` [PATCH V2 4/5] xen: Change memory access behavior during migration Anthony PERARD 2011-12-12 12:55 ` [Qemu-devel] " Stefano Stabellini 2011-12-12 12:55 ` Stefano Stabellini 2011-12-09 21:54 ` [Qemu-devel] [PATCH V2 5/5] vga-cirrus: Workaround during restore when using Xen Anthony PERARD 2011-12-09 21:54 ` Anthony PERARD 2011-12-10 10:45 ` [Qemu-devel] " Jan Kiszka 2011-12-10 10:45 ` Jan Kiszka 2011-12-12 13:18 ` [Qemu-devel] " Stefano Stabellini 2011-12-12 13:18 ` Stefano Stabellini 2011-12-12 14:03 ` [Qemu-devel] " Jan Kiszka 2011-12-12 14:03 ` Jan Kiszka 2011-12-12 14:41 ` [Qemu-devel] " Stefano Stabellini 2011-12-12 14:41 ` Stefano Stabellini 2011-12-12 15:03 ` [Qemu-devel] " Jan Kiszka 2011-12-12 15:03 ` Jan Kiszka 2011-12-12 15:32 ` [Qemu-devel] " Stefano Stabellini 2011-12-12 15:32 ` Stefano Stabellini 2011-12-13 11:55 ` [Qemu-devel] early_savevm (was: [PATCH V2 5/5] vga-cirrus: Workaround during restore when using Xen.) Stefano Stabellini 2011-12-13 11:55 ` Stefano Stabellini 2011-12-13 12:35 ` [Qemu-devel] early_savevm Jan Kiszka 2011-12-13 12:35 ` early_savevm Jan Kiszka 2011-12-13 13:59 ` [Qemu-devel] early_savevm Stefano Stabellini 2011-12-13 13:59 ` early_savevm Stefano Stabellini 2011-12-18 17:43 ` [Qemu-devel] early_savevm Avi Kivity 2011-12-18 17:43 ` early_savevm Avi Kivity 2012-01-11 17:55 ` [Qemu-devel] early_savevm Anthony Liguori 2011-12-18 17:41 ` [Qemu-devel] [PATCH V2 5/5] vga-cirrus: Workaround during restore when using Xen Avi Kivity 2011-12-18 17:41 ` Avi Kivity 2012-01-04 16:38 ` [Qemu-devel] " Stefano Stabellini 2012-01-04 16:38 ` Stefano Stabellini 2012-01-04 17:23 ` [Qemu-devel] " Avi Kivity 2012-01-04 17:23 ` Avi Kivity 2012-01-05 12:30 ` [Qemu-devel] " Stefano Stabellini 2012-01-05 12:30 ` Stefano Stabellini 2012-01-05 12:50 ` [Qemu-devel] " Avi Kivity 2012-01-05 12:50 ` Avi Kivity 2012-01-05 13:17 ` [Qemu-devel] " Stefano Stabellini 2012-01-05 13:17 ` Stefano Stabellini 2012-01-05 13:32 ` [Qemu-devel] " Avi Kivity 2012-01-05 13:32 ` Avi Kivity 2012-01-05 14:34 ` [Qemu-devel] " Stefano Stabellini 2012-01-05 14:34 ` Stefano Stabellini 2012-01-05 15:19 ` [Qemu-devel] " Avi Kivity 2012-01-05 15:19 ` Avi Kivity 2012-01-05 15:53 ` [Qemu-devel] " Stefano Stabellini 2012-01-05 15:53 ` Stefano Stabellini 2012-01-05 16:33 ` [Qemu-devel] " Avi Kivity 2012-01-05 16:33 ` Avi Kivity 2012-01-05 17:21 ` [Qemu-devel] " Stefano Stabellini 2012-01-05 17:21 ` Stefano Stabellini 2012-01-05 17:50 ` [Qemu-devel] " Avi Kivity 2012-01-05 17:50 ` Avi Kivity 2012-01-05 18:49 ` [Qemu-devel] " Jan Kiszka 2012-01-05 18:49 ` Jan Kiszka 2012-01-06 10:50 ` [Qemu-devel] " Stefano Stabellini 2012-01-06 10:50 ` Stefano Stabellini 2012-01-06 13:30 ` [Qemu-devel] " Jan Kiszka 2012-01-06 13:30 ` Jan Kiszka 2012-01-06 14:40 ` [Qemu-devel] " Stefano Stabellini 2012-01-06 14:40 ` Stefano Stabellini 2012-01-08 10:39 ` [Qemu-devel] " Avi Kivity 2012-01-08 10:39 ` Avi Kivity 2012-01-09 15:25 ` [Qemu-devel] " Stefano Stabellini 2012-01-09 15:25 ` Stefano Stabellini 2012-01-09 15:28 ` [Qemu-devel] " Jan Kiszka 2012-01-09 15:28 ` Jan Kiszka 2012-01-09 15:36 ` [Qemu-devel] " Avi Kivity 2012-01-09 15:36 ` Avi Kivity 2012-01-06 15:58 ` [Qemu-devel] " Peter Maydell 2012-01-06 15:58 ` Peter Maydell 2012-01-06 16:50 ` [Qemu-devel] " Jan Kiszka 2012-01-06 16:50 ` Jan Kiszka 2012-01-06 12:19 ` [Qemu-devel] " Avi Kivity 2012-01-06 12:19 ` Avi Kivity 2012-01-06 12:22 ` [Qemu-devel] " Jan Kiszka 2012-01-06 12:22 ` Jan Kiszka 2012-01-06 12:47 ` [Qemu-devel] " Avi Kivity 2012-01-06 12:47 ` Avi Kivity 2011-12-12 12:58 ` [Qemu-devel] " Stefano Stabellini 2011-12-12 12:58 ` Stefano Stabellini
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