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Re: [PATCH v2 1/3] mini-os: mm: introduce generic page table walk function


  • To: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Tue, 20 Aug 2024 16:17:26 +0200
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  • Cc: minios-devel@xxxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • Delivery-date: Tue, 20 Aug 2024 14:17:32 +0000
  • List-id: Mini-os development list <minios-devel.lists.xenproject.org>

On 20.08.2024 13:52, Samuel Thibault wrote:
> Juergen Gross, le mar. 13 août 2024 15:41:56 +0200, a ecrit:
>> In x86 mm code there are multiple instances of page table walks for
>> different purposes.
>>
>> Introduce a generic page table walker being able to cover the current
>> use cases. It will be used for other cases in future, too.
>>
>> The page table walker needs some per-level data, so add a table for
>> that data. Merge it with the already existing pt_prot[] array.
>>
>> Rewrite get_pgt() to use the new walker.
>>
>> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
> 
> Reviewed-by: SAmuel Thibault <samuel.thibault@xxxxxxxxxxxx>

Samuel - I've taken the liberty to convert the odd upper-case A.

Jürgen - looking at the mini-os short-log is quite odd, and increasingly
so. In the mini-os repo surely all commits are about mini-os; the
subject prefixes are kind of pointless. To nevertheless identify such
patches on xen-devel@, may I suggest to use (taking this patch as an
example) "[PATCH MINI-OS] mm: introduce generic page table walk function"
instead (or, of course, whatever variation thereof you may like better)?

Jan



 


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