| Message ID | 20230828085711.4000711-1-maz@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [GIT,PULL] KVM/arm64 updates for Linux v6.6 | expand |
On Mon, Aug 28, 2023 at 10:57 AM Marc Zyngier <maz@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(-) >
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(-)