| From | Yinghai Lu <> | Subject | [PATCH 28/46] x86, mm: Add pointer about Xen mmu requirement for alloc_low_pages | Date | Mon, 12 Nov 2012 13:18:24 -0800 |
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From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Add link to commit 279b706 for more information
Signed-off-by: Yinghai Lu <yinghai@kernel.org> --- arch/x86/mm/init.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index f5e0120..a7939ed 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -25,6 +25,11 @@ unsigned long __meminitdata pgt_buf_top; static unsigned long min_pfn_mapped; +/* + * Pages returned are already directly mapped. + * + * Changing that is likely to break Xen, see commit 279b706 for detail info. + */ __ref void *alloc_low_pages(unsigned int num) { unsigned long pfn; -- 1.7.7
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