lkml.org 
[lkml]   [2022]   [Jun]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH 0/3] KVM: x86/mmu: Cleanups for eager page splitting
From
On 6/24/22 19:18, Sean Christopherson wrote:
> Eager page splitting cleanups for a few minor things that were noted in
> code review but didn't make it into the committed code.
>
> The last patch in particular is a bit more urgent than I first realized.
> I had forgotten that pte_list_desc is now 128 bytes, and I also had a
> brain fart and thought it was just allocating pointers, i.e. 8 bytes.
> In other words, I was thinking the 513 object buffer was "only" wasting
> ~8kb per VM, whereas it actually costs ~64kb per VM.
>
> Sean Christopherson (3):
> KVM: x86/mmu: Avoid subtle pointer arithmetic in kvm_mmu_child_role()
> KVM: x86/mmu: Use "unsigned int", not "u32", for SPTEs' @access info
> KVM: x86/mmu: Buffer nested MMU split_desc_cache only by default
> capacity
>
> arch/x86/kvm/mmu/mmu.c | 53 ++++++++++++++++++++++++++++--------------
> 1 file changed, 35 insertions(+), 18 deletions(-)
>
>
> base-commit: 4b88b1a518b337de1252b8180519ca4c00015c9e

Queued 2+3.

Paolo

\
 
 \ /
  Last update: 2022-06-25 10:55    [W:0.115 / U:0.512 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site