[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <20240412173532.3481264-1-pbonzini@redhat.com>
Date: Fri, 12 Apr 2024 13:35:22 -0400
From: Paolo Bonzini <pbonzini@...hat.com>
To: linux-kernel@...r.kernel.org,
kvm@...r.kernel.org
Subject: [PATCH 00/10] KVM: MMU changes for confidential computing
This includes the MMU parts of "TDX/SNP part 1 of n"[1] while the rest
was posted as "KVM: guest_memfd: New hooks and functionality for SEV-SNP
and TDX"[2] last week.
It includes two basic parts:
- Allow non-zero value for non-present SPTE and removed SPTE, so that
TDX can set the "suppress VE" bit
- Use PFERR_GUEST_ENC_MASK to indicate fault is private.
The changes from v1 are:
- splitting #VE architectural definitions to their own patch
- replace the module parameter to trap #VE with a Kconfig symbol,
enabling it by default if PROVE_MMU || DEBUG_KERNEL.
- Sean's suggestion that "if we're going to bother plumbing in the error
code, then we should use it to do sanity checks" on async page faults.
- removing the dead function kvm_mmu_set_mmio_spte_value(), which can
be added by TDX patches when they need it
Paolo
[1] https://patchew.org/linux/20240227232100.478238-1-pbonzini@redhat.com/
[2] https://patchew.org/linux/20240404185034.3184582-1-pbonzini@redhat.com/
Isaku Yamahata (3):
KVM: x86/mmu: Add Suppress VE bit to EPT
shadow_mmio_mask/shadow_present_mask
KVM: VMX: Introduce test mode related to EPT violation VE
KVM: x86/mmu: Pass around full 64-bit error code for KVM page faults
Paolo Bonzini (3):
KVM, x86: add architectural support code for #VE
KVM: x86/mmu: Use PFERR_GUEST_ENC_MASK to indicate fault is private
KVM: x86/mmu: check for invalid async page faults involving private
memory
Sean Christopherson (4):
KVM: Allow page-sized MMU caches to be initialized with custom 64-bit
values
KVM: x86/mmu: Replace hardcoded value 0 for the initial value for SPTE
KVM: x86/mmu: Allow non-zero value for non-present SPTE and removed
SPTE
KVM: x86/mmu: Track shadow MMIO value on a per-VM basis
arch/x86/include/asm/kvm_host.h | 5 +++
arch/x86/include/asm/vmx.h | 13 +++++++
arch/x86/kvm/Kconfig | 13 +++++++
arch/x86/kvm/mmu/mmu.c | 50 ++++++++++++++++---------
arch/x86/kvm/mmu/mmu_internal.h | 6 +--
arch/x86/kvm/mmu/mmutrace.h | 2 +-
arch/x86/kvm/mmu/paging_tmpl.h | 4 +-
arch/x86/kvm/mmu/spte.c | 10 +++--
arch/x86/kvm/mmu/spte.h | 22 +++++++++--
arch/x86/kvm/mmu/tdp_mmu.c | 18 ++++-----
arch/x86/kvm/vmx/vmcs.h | 5 +++
arch/x86/kvm/vmx/vmx.c | 65 ++++++++++++++++++++++++++++++++-
arch/x86/kvm/vmx/vmx.h | 6 ++-
include/linux/kvm_types.h | 1 +
virt/kvm/kvm_main.c | 16 +++++++-
15 files changed, 193 insertions(+), 43 deletions(-)
--
2.43.0
Powered by blists - more mailing lists