On 03/02/2017 17:06, James Hogan wrote: > Hi Paolo, Radim, > > The following changes since commit 0b4c208d443ba2af82b4c70f99ca8df31e9a0020: > > Revert "KVM: nested VMX: disable perf cpuid reporting" (2017-01-20 22:18:55 +0100) > > are available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/kvm-mips.git tags/kvm_mips_4.11_1 > > for you to fetch changes up to 12ed1faece3f141c2604b5b3a8377ba71d23ec9d: > > KVM: MIPS: Allow multiple VCPUs to be created (2017-02-03 15:21:34 +0000) > > It is already included in linux-next (though I did tweak one of the > commit messages just now to remove a patch changelog I had accidentally > left in, with no changes to the code). > > It includes a merge of my mips branch in the same repo, which is based > on v4.10-rc2 and contains the general MIPS changes in the GVA/GPA page > tables series, for Ralf to also merge if he likes. > > Cheers > James > > ---------------------------------------------------------------- > KVM: MIPS: GVA/GPA page tables, dirty logging, SYNC_MMU etc > > Numerous MIPS KVM fixes, improvements, and features for 4.11, many of > which continue to pave the way for VZ support, the most interesting of > which are: > > - Add GVA->HPA page tables for T&E, to cache GVA mappings. > - Generate fast-path TLB refill exception handler which loads host TLB > entries from GVA page table, avoiding repeated guest memory > translation and guest TLB lookups. > - Use uaccess macros when T&E needs to access guest memory, which with > GVA page tables and the Linux TLB refill handler improves robustness > against TLB faults and fixes EVA hosts. > - Use BadInstr/BadInstrP registers when available to obtain instruction > encodings after a synchronous trap. > - Add GPA->HPA page tables to replace the inflexible linear array, > allowing for multiple sparsely arranged memory regions. > - Properly implement dirty page logging. > - Add KVM_CAP_SYNC_MMU support so that changes in GPA mappings become > effective in guests even if they are already running, allowing for > copy-on-write, KSM, idle page tracking, swapping, and guest memory > ballooning. > - Add KVM_CAP_READONLY_MEM support, so writes to specified memory > regions are treated as MMIO. > - Implement proper CP0_EBase support in T&E. > - Expose a few more missing CP0 registers to userland. > - Add KVM_CAP_NR_VCPUS and KVM_CAP_MAX_VCPUS support, and allow up to 8 > VCPUs to be created in a VM. > - Various cleanups and dropping of dead and duplicated code. > > ---------------------------------------------------------------- > James Hogan (63): > MIPS: Move pgd_alloc() out of header > MIPS: Export pgd/pmd symbols for KVM > MIPS: uasm: Add include guards in asm/uasm.h > MIPS: Export some tlbex internals for KVM to use > MIPS: Add return errors to protected cache ops > Merge MIPS prerequisites > KVM: MIPS: Drop partial KVM_NMI implementation > KVM: MIPS/MMU: Simplify ASID restoration > KVM: MIPS: Convert get/set_regs -> vcpu_load/put > KVM: MIPS/MMU: Move preempt/ASID handling to implementation > KVM: MIPS: Remove duplicated ASIDs from vcpu > KVM: MIPS: Add vcpu_run() & vcpu_reenter() callbacks > KVM: MIPS/T&E: Restore host asid on return to host > KVM: MIPS/T&E: active_mm = init_mm in guest context > KVM: MIPS: Wire up vcpu uninit > KVM: MIPS/T&E: Allocate GVA -> HPA page tables > KVM: MIPS/T&E: Activate GVA page tables in guest context > KVM: MIPS: Support NetLogic KScratch registers > KVM: MIPS: Add fast path TLB refill handler > KVM: MIPS/TLB: Fix off-by-one in TLB invalidate > KVM: MIPS/TLB: Generalise host TLB invalidate to kernel ASID > KVM: MIPS/MMU: Invalidate GVA PTs on ASID changes > KVM: MIPS/MMU: Invalidate stale GVA PTEs on TLBW > KVM: MIPS/MMU: Convert KSeg0 faults to page tables > KVM: MIPS/MMU: Convert TLB mapped faults to page tables > KVM: MIPS/MMU: Convert commpage fault handling to page tables > KVM: MIPS: Drop vm_init() callback > KVM: MIPS: Use uaccess to read/modify guest instructions > KVM: MIPS/Emulate: Fix CACHE emulation for EVA hosts > KVM: MIPS/TLB: Drop kvm_local_flush_tlb_all() > KVM: MIPS/Emulate: Drop redundant TLB flushes on exceptions > KVM: MIPS/MMU: Drop kvm_get_new_mmu_context() > KVM: MIPS/T&E: Don't treat code fetch faults as MMIO > KVM: MIPS: Improve kvm_get_inst() error return > KVM: MIPS: Use CP0_BadInstr[P] for emulation > KVM: MIPS/MMU: Convert guest physical map to page table > KVM: MIPS: Update vcpu->mode and vcpu->cpu > KVM: MIPS/T&E: Handle TLB invalidation requests > KVM: MIPS/T&E: Reduce stale ASID checks > KVM: MIPS/T&E: Add lockless GVA access helpers > KVM: MIPS/T&E: Use lockless GVA helpers for dyntrans > KVM: MIPS/MMU: Use lockless GVA helpers for get_inst() > KVM: MIPS/Emulate: Use lockless GVA helpers for cache emulation > KVM: MIPS: Implement kvm_arch_flush_shadow_all/memslot > KVM: MIPS/T&E: Ignore user writes to CP0_Config7 > KVM: MIPS: Pass type of fault down to kvm_mips_map_page() > KVM: MIPS/T&E: Abstract bad access handling > KVM: MIPS/T&E: Treat unhandled guest KSeg0 as MMIO > KVM: MIPS/T&E: Handle read only GPA in TLB mod > KVM: MIPS/MMU: Add GPA PT mkclean helper > KVM: MIPS/MMU: Use generic dirty log & protect helper > KVM: MIPS: Clean & flush on dirty page logging enable > KVM: MIPS/MMU: Handle dirty logging on GPA faults > KVM: MIPS/MMU: Pass GPA PTE bits to KSeg0 GVA PTEs > KVM: MIPS/MMU: Pass GPA PTE bits to mapped GVA PTEs > KVM: MIPS/MMU: Implement KVM_CAP_SYNC_MMU > KVM: MIPS: Claim KVM_CAP_READONLY_MEM support > KVM: MIPS/T&E: Move CP0 register access into T&E > KVM: MIPS/T&E: Implement CP0_EBase register > KVM: MIPS/T&E: Default to reset vector > KVM: MIPS/T&E: Expose CP0_EntryLo0/1 registers > KVM: MIPS/T&E: Expose read-only CP0_IntCtl register > KVM: MIPS: Allow multiple VCPUs to be created > > Markus Elfring (1): > MIPS: KVM: Return directly after a failed copy_from_user() in kvm_arch_vcpu_ioctl() > > Documentation/virtual/kvm/api.txt | 10 + > arch/mips/include/asm/kvm_host.h | 183 +++-- > arch/mips/include/asm/mmu_context.h | 9 +- > arch/mips/include/asm/pgalloc.h | 16 +- > arch/mips/include/asm/r4kcache.h | 55 +- > arch/mips/include/asm/tlbex.h | 26 + > arch/mips/include/asm/uasm.h | 5 + > arch/mips/include/uapi/asm/kvm.h | 2 + > arch/mips/kvm/Kconfig | 2 + > arch/mips/kvm/dyntrans.c | 50 +- > arch/mips/kvm/emulate.c | 432 ++++++------ > arch/mips/kvm/entry.c | 155 +++- > arch/mips/kvm/interrupt.c | 5 +- > arch/mips/kvm/mips.c | 496 ++++--------- > arch/mips/kvm/mmu.c | 1335 ++++++++++++++++++++++++++++------- > arch/mips/kvm/tlb.c | 299 ++------ > arch/mips/kvm/trap_emul.c | 740 ++++++++++++++++--- > arch/mips/mm/Makefile | 2 +- > arch/mips/mm/init.c | 1 + > arch/mips/mm/pgtable-64.c | 2 + > arch/mips/mm/pgtable.c | 25 + > arch/mips/mm/tlbex.c | 38 +- > 22 files changed, 2611 insertions(+), 1277 deletions(-) > create mode 100644 arch/mips/include/asm/tlbex.h > create mode 100644 arch/mips/mm/pgtable.c > Pulled, thanks. Paolo
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