[GIT PULL] KVM/arm64 updates for Linux v6.6
Paolo Bonzini
pbonzini at redhat.com
Thu Aug 31 10:19:17 PDT 2023
On Mon, Aug 28, 2023 at 10:57 AM Marc Zyngier <maz at kernel.org> wrote:
>
> Paolo,
>
> Here's the set of KVM/arm64 updates for 6.6. The highlight is the
> support for range-based TLB invalidation, something that should help
> cloud-type workloads, which are basically limited to moving the VMs
> around rather than running guest code... ;-)
>
> We also have a pretty large nested virtualisation update, with the
> description of a zillion trap bits. The rest is the usual mix of
> cleanups, bug fixes, and minor improvements (details in the tag
> below).
>
> Please pull,
Pulled, thanks.
Paolo
> M.
>
> The following changes since commit 6eaae198076080886b9e7d57f4ae06fa782f90ef:
>
> Linux 6.5-rc3 (2023-07-23 15:24:10 -0700)
>
> are available in the Git repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-6.6
>
> for you to fetch changes up to 1f66f1246bfa08aaf13db897736de49cbeaf72a1:
>
> Merge branch kvm-arm64/6.6/misc into kvmarm-master/next (2023-08-28 09:30:32 +0100)
>
> ----------------------------------------------------------------
> KVM/arm64 updates for Linux 6.6
>
> - Add support for TLB range invalidation of Stage-2 page tables,
> avoiding unnecessary invalidations. Systems that do not implement
> range invalidation still rely on a full invalidation when dealing
> with large ranges.
>
> - Add infrastructure for forwarding traps taken from a L2 guest to
> the L1 guest, with L0 acting as the dispatcher, another baby step
> towards the full nested support.
>
> - Simplify the way we deal with the (long deprecated) 'CPU target',
> resulting in a much needed cleanup.
>
> - Fix another set of PMU bugs, both on the guest and host sides,
> as we seem to never have any shortage of those...
>
> - Relax the alignment requirements of EL2 VA allocations for
> non-stack allocations, as we were otherwise wasting a lot of that
> precious VA space.
>
> - The usual set of non-functional cleanups, although I note the lack
> of spelling fixes...
>
> ----------------------------------------------------------------
> David Matlack (3):
> KVM: Rename kvm_arch_flush_remote_tlb() to kvm_arch_flush_remote_tlbs()
> KVM: Allow range-based TLB invalidation from common code
> KVM: Move kvm_arch_flush_remote_tlbs_memslot() to common code
>
> Fuad Tabba (1):
> KVM: arm64: Remove redundant kvm_set_pfn_accessed() from user_mem_abort()
>
> Marc Zyngier (35):
> Merge branch kvm-arm64/6.6/generic-vcpu into kvmarm-master/next
> arm64: Add missing VA CMO encodings
> arm64: Add missing ERX*_EL1 encodings
> arm64: Add missing DC ZVA/GVA/GZVA encodings
> arm64: Add TLBI operation encodings
> arm64: Add AT operation encodings
> arm64: Add debug registers affected by HDFGxTR_EL2
> arm64: Add missing BRB/CFP/DVP/CPP instructions
> arm64: Add HDFGRTR_EL2 and HDFGWTR_EL2 layouts
> KVM: arm64: Correctly handle ACCDATA_EL1 traps
> KVM: arm64: Add missing HCR_EL2 trap bits
> KVM: arm64: nv: Add FGT registers
> KVM: arm64: Restructure FGT register switching
> KVM: arm64: nv: Add trap forwarding infrastructure
> KVM: arm64: nv: Add trap forwarding for HCR_EL2
> KVM: arm64: nv: Expose FEAT_EVT to nested guests
> KVM: arm64: nv: Add trap forwarding for MDCR_EL2
> KVM: arm64: nv: Add trap forwarding for CNTHCTL_EL2
> KVM: arm64: nv: Add fine grained trap forwarding infrastructure
> KVM: arm64: nv: Add trap forwarding for HFGxTR_EL2
> KVM: arm64: nv: Add trap forwarding for HFGITR_EL2
> KVM: arm64: nv: Add trap forwarding for HDFGxTR_EL2
> KVM: arm64: nv: Add SVC trap forwarding
> KVM: arm64: nv: Expand ERET trap forwarding to handle FGT
> KVM: arm64: nv: Add switching support for HFGxTR/HDFGxTR
> KVM: arm64: nv: Expose FGT to nested guests
> KVM: arm64: Move HCRX_EL2 switch to load/put on VHE systems
> KVM: arm64: nv: Add support for HCRX_EL2
> KVM: arm64: pmu: Resync EL0 state on counter rotation
> KVM: arm64: pmu: Guard PMU emulation definitions with CONFIG_KVM
> KVM: arm64: nv: Add trap description for SPSR_EL2 and ELR_EL2
> Merge branch kvm-arm64/nv-trap-forwarding into kvmarm-master/next
> Merge branch kvm-arm64/tlbi-range into kvmarm-master/next
> Merge branch kvm-arm64/6.6/pmu-fixes into kvmarm-master/next
> Merge branch kvm-arm64/6.6/misc into kvmarm-master/next
>
> Mark Brown (1):
> arm64: Add feature detection for fine grained traps
>
> Oliver Upton (4):
> KVM: arm64: Delete pointless switch statement in kvm_reset_vcpu()
> KVM: arm64: Remove pointless check for changed init target
> KVM: arm64: Replace vCPU target with a configuration flag
> KVM: arm64: Always return generic v8 as the preferred target
>
> Raghavendra Rao Ananta (11):
> KVM: Declare kvm_arch_flush_remote_tlbs() globally
> KVM: arm64: Use kvm_arch_flush_remote_tlbs()
> KVM: Remove CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL
> arm64: tlb: Refactor the core flush algorithm of __flush_tlb_range
> arm64: tlb: Implement __flush_s2_tlb_range_op()
> KVM: arm64: Implement __kvm_tlb_flush_vmid_range()
> KVM: arm64: Define kvm_tlb_flush_vmid_range()
> KVM: arm64: Implement kvm_arch_flush_remote_tlbs_range()
> KVM: arm64: Flush only the memslot after write-protect
> KVM: arm64: Invalidate the table entries upon a range
> KVM: arm64: Use TLBI range-based instructions for unmap
>
> Randy Dunlap (1):
> KVM: arm64: nv: Select XARRAY_MULTI to fix build error
>
> Reiji Watanabe (4):
> KVM: arm64: PMU: Disallow vPMU on non-uniform PMUVer
> KVM: arm64: PMU: Avoid inappropriate use of host's PMUVer
> KVM: arm64: PMU: Don't advertise the STALL_SLOT event
> KVM: arm64: PMU: Don't advertise STALL_SLOT_{FRONTEND,BACKEND}
>
> Shaoqin Huang (1):
> KVM: arm64: Use the known cpu id instead of smp_processor_id()
>
> Vincent Donnefort (1):
> KVM: arm64: Remove size-order align in the nVHE hyp private VA range
>
> Yue Haibing (1):
> KVM: arm64: Remove unused declarations
>
> Zenghui Yu (1):
> KVM: arm64: Drop HCR_VIRT_EXCP_MASK
>
> arch/arm/include/asm/arm_pmuv3.h | 2 +
> arch/arm64/include/asm/kvm_arm.h | 51 +-
> arch/arm64/include/asm/kvm_asm.h | 3 +
> arch/arm64/include/asm/kvm_host.h | 24 +-
> arch/arm64/include/asm/kvm_mmu.h | 1 +
> arch/arm64/include/asm/kvm_nested.h | 2 +
> arch/arm64/include/asm/kvm_pgtable.h | 10 +
> arch/arm64/include/asm/sysreg.h | 268 ++++-
> arch/arm64/include/asm/tlbflush.h | 124 ++-
> arch/arm64/kernel/cpufeature.c | 7 +
> arch/arm64/kvm/Kconfig | 2 +-
> arch/arm64/kvm/arm.c | 65 +-
> arch/arm64/kvm/emulate-nested.c | 1852 +++++++++++++++++++++++++++++++
> arch/arm64/kvm/guest.c | 15 -
> arch/arm64/kvm/handle_exit.c | 29 +-
> arch/arm64/kvm/hyp/include/hyp/switch.h | 127 ++-
> arch/arm64/kvm/hyp/include/nvhe/mm.h | 1 +
> arch/arm64/kvm/hyp/nvhe/hyp-main.c | 11 +
> arch/arm64/kvm/hyp/nvhe/mm.c | 83 +-
> arch/arm64/kvm/hyp/nvhe/setup.c | 27 +-
> arch/arm64/kvm/hyp/nvhe/switch.c | 2 +-
> arch/arm64/kvm/hyp/nvhe/tlb.c | 30 +
> arch/arm64/kvm/hyp/pgtable.c | 63 +-
> arch/arm64/kvm/hyp/vhe/tlb.c | 28 +
> arch/arm64/kvm/mmu.c | 102 +-
> arch/arm64/kvm/nested.c | 11 +-
> arch/arm64/kvm/pmu-emul.c | 37 +-
> arch/arm64/kvm/pmu.c | 18 +
> arch/arm64/kvm/reset.c | 25 +-
> arch/arm64/kvm/sys_regs.c | 15 +
> arch/arm64/kvm/trace_arm.h | 26 +
> arch/arm64/kvm/vgic/vgic.h | 2 -
> arch/arm64/tools/cpucaps | 1 +
> arch/arm64/tools/sysreg | 129 +++
> arch/mips/include/asm/kvm_host.h | 3 +-
> arch/mips/kvm/mips.c | 12 +-
> arch/riscv/kvm/mmu.c | 6 -
> arch/x86/include/asm/kvm_host.h | 6 +-
> arch/x86/kvm/mmu/mmu.c | 28 +-
> arch/x86/kvm/mmu/mmu_internal.h | 3 -
> arch/x86/kvm/x86.c | 2 +-
> drivers/perf/arm_pmuv3.c | 2 +
> include/kvm/arm_pmu.h | 4 +-
> include/linux/kvm_host.h | 24 +-
> virt/kvm/Kconfig | 3 -
> virt/kvm/kvm_main.c | 35 +-
> 46 files changed, 2993 insertions(+), 328 deletions(-)
>
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