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SubjectRe: [PATCH 28/46] x86, mm: Add pointer about Xen mmu requirement for alloc_low_pages
On 11/13/2012 08:38 AM, Stefano Stabellini wrote:
> On Mon, 12 Nov 2012, Yinghai Lu wrote:
>> From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
>>
>> Add link to commit 279b706 for more information
>>
>> Signed-off-by: Yinghai Lu <yinghai@kernel.org>
>
> ah, here it is, OK then
>
>> 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.
> ^detailed
>

When making references to git commits, please include the title of the
commit:

*
* Changing that is likely to break Xen, see commit:
*
* 279b706 x86,xen: introduce x86_init.mapping.pagetable_reserve
*
* for detailed information.

Otherwise it might be very confusing if we have an abbreviated hash
collision or end up having to change git to use another hash system.

-hpa

--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.



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