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,
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(-)
