Yank out KVM's MTRR virtualization, which is Intel-only and limited to very specific setups, i.e. can't possibly be useful for any real world, modern guest. The following changes since commit c3f38fa61af77b49866b006939479069cd451173: Linux 6.10-rc2 (2024-06-02 15:44:56 -0700) are available in the Git repository at: https://github.com/kvm-x86/linux.git tags/kvm-x86-mtrrs-6.11 for you to fetch changes up to 377b2f359d1f71c75f8cc352b5c81f2210312d83: KVM: VMX: Always honor guest PAT on CPUs that support self-snoop (2024-06-07 07:18:03 -0700) ---------------------------------------------------------------- KVM x86 MTRR virtualization removal Remove support for virtualizing MTRRs on Intel CPUs, along with a nasty CR0.CD hack, and instead always honor guest PAT on CPUs that support self-snoop. ---------------------------------------------------------------- Sean Christopherson (3): KVM: x86: Remove VMX support for virtualizing guest MTRR memtypes KVM: VMX: Drop support for forcing UC memory when guest CR0.CD=1 KVM: VMX: Always honor guest PAT on CPUs that support self-snoop Yan Zhao (2): srcu: Add an API for a memory barrier after SRCU read lock KVM: x86: Ensure a full memory barrier is emitted in the VM-Exit path Documentation/virt/kvm/api.rst | 6 +- Documentation/virt/kvm/x86/errata.rst | 18 + arch/x86/include/asm/kvm_host.h | 15 +- arch/x86/kvm/mmu.h | 7 +- arch/x86/kvm/mmu/mmu.c | 35 +- arch/x86/kvm/mtrr.c | 644 ++-------------------------------- arch/x86/kvm/vmx/vmx.c | 40 +-- arch/x86/kvm/x86.c | 24 +- arch/x86/kvm/x86.h | 4 - include/linux/srcu.h | 14 + 10 files changed, 105 insertions(+), 702 deletions(-)
