Messages in this thread Patch in this message |  | | | From | stefano.stabellini@eu ... | | Subject | [PATCH 4/4] xen: do not create the extra e820 region at an addr lower than 4G | | Date | Tue, 12 Apr 2011 12:19:52 +0100 |
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From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Do not add the extra e820 region at a physical address lower than 4G because it breaks e820_end_of_low_ram_pfn().
It is OK for us to move the xen_extra_mem_start up and down because this is the index of the memory that can be ballooned in/out - it is memory not available to the kernel during bootup.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> --- arch/x86/xen/setup.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 9c38bd1..a51e010 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -229,7 +229,7 @@ char * __init xen_memory_setup(void) memcpy(map_raw, map, sizeof(map)); e820.nr_map = 0; - xen_extra_mem_start = mem_end; + xen_extra_mem_start = max((1ULL << 32), mem_end); for (i = 0; i < memmap.nr_entries; i++) { unsigned long long end; -- 1.7.2.3
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