linux-kernel - [PATCHV2 0/3] kvm: x86: make PTE_PREFETCH

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Date:   Wed, 20 Oct 2021 00:32:11 +0900
From:   Sergey Senozhatsky <senozhatsky@...omium.org>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        David Matlack <dmatlack@...gle.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Suleiman Souhlal <suleiman@...gle.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Sergey Senozhatsky <senozhatsky@...omium.org>
Subject: [PATCHV2 0/3] kvm: x86: make PTE_PREFETCH_NUM tunable

This series adds new IOCTL which make it possible to tune
PTE_PREFETCH_NUM value on per-VM basis.

v2:
- added ioctl (previously was sysfs param) [David]
- preallocate prefetch buffers [David]
- converted arch/x86/kvm/mmu/paging_tmpl.h [David]

Sergey Senozhatsky (3):
  KVM: x86: introduce kvm_mmu_pte_prefetch structure
  KVM: x86: use mmu_pte_prefetch for guest_walker
  KVM: x86: add KVM_SET_MMU_PREFETCH ioctl

 Documentation/virt/kvm/api.rst  | 21 ++++++++++++
 arch/x86/include/asm/kvm_host.h | 12 +++++++
 arch/x86/kvm/mmu.h              |  4 +++
 arch/x86/kvm/mmu/mmu.c          | 57 ++++++++++++++++++++++++++++++---
 arch/x86/kvm/mmu/paging_tmpl.h  | 39 +++++++++++++++-------
 arch/x86/kvm/x86.c              | 38 +++++++++++++++++++++-
 include/uapi/linux/kvm.h        |  4 +++
 7 files changed, 158 insertions(+), 17 deletions(-)

-- 
2.33.0.1079.g6e70778dc9-goog