lkml.org 
[lkml]   [2022]   [Jun]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 1/4] KVM: x86/mmu: Add optimized helper to retrieve an SPTE's index
On Fri, Jun 24, 2022 at 09:30:36PM +0000, Sean Christopherson wrote:
> Add spte_index() to dedup all the code that calculates a SPTE's index
> into its parent's page table and/or spt array. Opportunistically tweak
> the calculation to avoid pointer arithmetic, which is subtle (subtract in
> 8-byte chunks) and less performant (requires the compiler to generate the
> subtraction).
>
> Suggested-by: David Matlack <dmatlack@google.com>
> Signed-off-by: Sean Christopherson <seanjc@google.com>

Thanks for the cleanup. I did a git-grep to look for any other users to
convert to spte_index() and didn't find any.

Reviewed-by: David Matlack <dmatlack@google.com>

\
 
 \ /
  Last update: 2022-06-25 01:42    [W:0.047 / U:4.320 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site