Messages in this thread | | | Date | Sat, 25 Jun 2022 10:55:04 +0200 | Subject | Re: [PATCH 0/3] KVM: x86/mmu: Cleanups for eager page splitting | From | Paolo Bonzini <> |
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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
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