On 12/5/22 16:58, Marc Zyngier wrote:
- There is a lot of selftest conflicts with your own branch, see:
https://lore.kernel.org/r/20221201112432.4cb9ae42@xxxxxxxxxxxxxxxx
https://lore.kernel.org/r/20221201113626.438f13c5@xxxxxxxxxxxxxxxx
https://lore.kernel.org/r/20221201115741.7de32422@xxxxxxxxxxxxxxxx
https://lore.kernel.org/r/20221201120939.3c19f004@xxxxxxxxxxxxxxxx
https://lore.kernel.org/r/20221201131623.18ebc8d8@xxxxxxxxxxxxxxxx
for a rather exhaustive collection.
Yeah, I saw them in Stephen's messages but missed your reply.
In retrospect, at least Gavin's series for memslot_perf_test should have
been applied by both of us with a topic branch, but there's so many
conflicts all over the place that it's hard to single out one series.
It just happens.
The only conflict in non-x86 code is the following one, please check
if I got it right.
diff --git a/tools/testing/selftests/kvm/aarch64/page_fault_test.c b/tools/testing/selftests/kvm/aarch64/page_fault_test.c
index 05bb6a6369c2..0cda70bef5d5 100644
--- a/tools/testing/selftests/kvm/aarch64/page_fault_test.c
+++ b/tools/testing/selftests/kvm/aarch64/page_fault_test.c
@@ -609,6 +609,8 @@ static void setup_memslots(struct kvm_vm *vm, struct test_params *p)
data_size / guest_page_size,
p->test_desc->data_memslot_flags);
vm->memslots[MEM_REGION_TEST_DATA] = TEST_DATA_MEMSLOT;
+
+ ucall_init(vm, data_gpa + data_size);
}
static void setup_default_handlers(struct test_desc *test)
@@ -704,8 +706,6 @@ static void run_test(enum vm_guest_mode mode, void *arg)
setup_gva_maps(vm);
- ucall_init(vm, NULL);
-
reset_event_counts();
/*
Special care is needed here because the test uses ____vm_create().
I haven't pushed to kvm/next yet to give you time to check, so the
merge is currently in kvm/queue only.
- For the 6.3 cycle, we are going to experiment with Oliver taking
care of most of the patch herding. I'm sure he'll do a great job,
but if there is the odd mistake, please cut him some slack and blame
me instead.
Absolutely - you both have all the slack you need, synchronization
is harder than it seems.
Paolo
Please pull,
M.
The following changes since commit f0c4d9fc9cc9462659728d168387191387e903cc:
Linux 6.1-rc4 (2022-11-06 15:07:11 -0800)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-6.2
for you to fetch changes up to 753d734f3f347e7fc49b819472bbf61dcfc1a16f:
Merge remote-tracking branch 'arm64/for-next/sysregs' into kvmarm-master/next (2022-12-05 14:39:53 +0000)
----------------------------------------------------------------
KVM/arm64 updates for 6.2
- Enable the per-vcpu dirty-ring tracking mechanism, together with an
option to keep the good old dirty log around for pages that are
dirtied by something other than a vcpu.
- Switch to the relaxed parallel fault handling, using RCU to delay
page table reclaim and giving better performance under load.
- Relax the MTE ABI, allowing a VMM to use the MAP_SHARED mapping
option, which multi-process VMMs such as crosvm rely on.
- Merge the pKVM shadow vcpu state tracking that allows the hypervisor
to have its own view of a vcpu, keeping that state private.
- Add support for the PMUv3p5 architecture revision, bringing support
for 64bit counters on systems that support it, and fix the
no-quite-compliant CHAIN-ed counter support for the machines that
actually exist out there.
- Fix a handful of minor issues around 52bit VA/PA support (64kB pages
only) as a prefix of the oncoming support for 4kB and 16kB pages.
- Add/Enable/Fix a bunch of selftests covering memslots, breakpoints,
stage-2 faults and access tracking. You name it, we got it, we
probably broke it.
- Pick a small set of documentation and spelling fixes, because no
good merge window would be complete without those.
As a side effect, this tag also drags:
- The 'kvmarm-fixes-6.1-3' tag as a dependency to the dirty-ring
series
- A shared branch with the arm64 tree that repaints all the system
registers to match the ARM ARM's naming, and resulting in
interesting conflicts
----------------------------------------------------------------
Anshuman Khandual (1):
KVM: arm64: PMU: Replace version number '0' with ID_AA64DFR0_EL1_PMUVer_NI
Catalin Marinas (4):
mm: Do not enable PG_arch_2 for all 64-bit architectures
arm64: mte: Fix/clarify the PG_mte_tagged semantics
KVM: arm64: Simplify the sanitise_mte_tags() logic
arm64: mte: Lock a page for MTE tag initialisation
Fuad Tabba (3):
KVM: arm64: Add hyp_spinlock_t static initializer
KVM: arm64: Add infrastructure to create and track pKVM instances at EL2
KVM: arm64: Instantiate pKVM hypervisor VM and vCPU structures from EL1
Gavin Shan (14):
KVM: x86: Introduce KVM_REQ_DIRTY_RING_SOFT_FULL
KVM: Move declaration of kvm_cpu_dirty_log_size() to kvm_dirty_ring.h
KVM: Support dirty ring in conjunction with bitmap
KVM: arm64: Enable ring-based dirty memory tracking
KVM: selftests: Use host page size to map ring buffer in dirty_log_test
KVM: selftests: Clear dirty ring states between two modes in dirty_log_test
KVM: selftests: Automate choosing dirty ring size in dirty_log_test
KVM: selftests: memslot_perf_test: Use data->nslots in prepare_vm()
KVM: selftests: memslot_perf_test: Consolidate loop conditions in prepare_vm()
KVM: selftests: memslot_perf_test: Probe memory slots for once
KVM: selftests: memslot_perf_test: Support variable guest page size
KVM: selftests: memslot_perf_test: Consolidate memory
KVM: selftests: memslot_perf_test: Report optimal memory slots
KVM: Push dirty information unconditionally to backup bitmap
James Morse (38):
arm64/sysreg: Standardise naming for ID_MMFR0_EL1
arm64/sysreg: Standardise naming for ID_MMFR4_EL1
arm64/sysreg: Standardise naming for ID_MMFR5_EL1
arm64/sysreg: Standardise naming for ID_ISAR0_EL1
arm64/sysreg: Standardise naming for ID_ISAR4_EL1
arm64/sysreg: Standardise naming for ID_ISAR5_EL1
arm64/sysreg: Standardise naming for ID_ISAR6_EL1
arm64/sysreg: Standardise naming for ID_PFR0_EL1
arm64/sysreg: Standardise naming for ID_PFR1_EL1
arm64/sysreg: Standardise naming for ID_PFR2_EL1
arm64/sysreg: Standardise naming for ID_DFR0_EL1
arm64/sysreg: Standardise naming for ID_DFR1_EL1
arm64/sysreg: Standardise naming for MVFR0_EL1
arm64/sysreg: Standardise naming for MVFR1_EL1
arm64/sysreg: Standardise naming for MVFR2_EL1
arm64/sysreg: Extend the maximum width of a register and symbol name
arm64/sysreg: Convert ID_MMFR0_EL1 to automatic generation
arm64/sysreg: Convert ID_MMFR1_EL1 to automatic generation
arm64/sysreg: Convert ID_MMFR2_EL1 to automatic generation
arm64/sysreg: Convert ID_MMFR3_EL1 to automatic generation
arm64/sysreg: Convert ID_MMFR4_EL1 to automatic generation
arm64/sysreg: Convert ID_ISAR0_EL1 to automatic generation
arm64/sysreg: Convert ID_ISAR1_EL1 to automatic generation
arm64/sysreg: Convert ID_ISAR2_EL1 to automatic generation
arm64/sysreg: Convert ID_ISAR3_EL1 to automatic generation
arm64/sysreg: Convert ID_ISAR4_EL1 to automatic generation
arm64/sysreg: Convert ID_ISAR5_EL1 to automatic generation
arm64/sysreg: Convert ID_ISAR6_EL1 to automatic generation
arm64/sysreg: Convert ID_PFR0_EL1 to automatic generation
arm64/sysreg: Convert ID_PFR1_EL1 to automatic generation
arm64/sysreg: Convert ID_PFR2_EL1 to automatic generation
arm64/sysreg: Convert MVFR0_EL1 to automatic generation
arm64/sysreg: Convert MVFR1_EL1 to automatic generation
arm64/sysreg: Convert MVFR2_EL1 to automatic generation
arm64/sysreg: Convert ID_MMFR5_EL1 to automatic generation
arm64/sysreg: Convert ID_AFR0_EL1 to automatic generation
arm64/sysreg: Convert ID_DFR0_EL1 to automatic generation
arm64/sysreg: Convert ID_DFR1_EL1 to automatic generation
Marc Zyngier (32):
Merge tag 'kvmarm-fixes-6.1-3' into kvm-arm64/dirty-ring
arm64: Add ID_DFR0_EL1.PerfMon values for PMUv3p7 and IMP_DEF
KVM: arm64: PMU: Align chained counter implementation with architecture pseudocode
KVM: arm64: PMU: Always advertise the CHAIN event
KVM: arm64: PMU: Distinguish between 64bit counter and 64bit overflow
KVM: arm64: PMU: Narrow the overflow checking when required
KVM: arm64: PMU: Only narrow counters that are not 64bit wide
KVM: arm64: PMU: Add counter_index_to_*reg() helpers
KVM: arm64: PMU: Simplify setting a counter to a specific value
KVM: arm64: PMU: Do not let AArch32 change the counters' top 32 bits
KVM: arm64: PMU: Move the ID_AA64DFR0_EL1.PMUver limit to VM creation
KVM: arm64: PMU: Allow ID_AA64DFR0_EL1.PMUver to be set from userspace
KVM: arm64: PMU: Allow ID_DFR0_EL1.PerfMon to be set from userspace
KVM: arm64: PMU: Implement PMUv3p5 long counter support
KVM: arm64: PMU: Allow PMUv3p5 to be exposed to the guest
KVM: arm64: PMU: Simplify vcpu computation on perf overflow notification
KVM: arm64: PMU: Make kvm_pmc the main data structure
KVM: arm64: PMU: Simplify PMCR_EL0 reset handling
KVM: arm64: PMU: Sanitise PMCR_EL0.LP on first vcpu run
KVM: arm64: PMU: Fix period computation for 64bit counters with 32bit overflow
Merge branch kvm-arm64/selftest/memslot-fixes into kvmarm-master/next
Merge branch kvm-arm64/selftest/linked-bps into kvmarm-master/next
Merge branch kvm-arm64/selftest/s2-faults into kvmarm-master/next
Merge branch kvm-arm64/selftest/access-tracking into kvmarm-master/next
Merge branch kvm-arm64/52bit-fixes into kvmarm-master/next
Merge branch kvm-arm64/dirty-ring into kvmarm-master/next
Merge branch kvm-arm64/parallel-faults into kvmarm-master/next
Merge branch kvm-arm64/pkvm-vcpu-state into kvmarm-master/next
Merge branch kvm-arm64/mte-map-shared into kvmarm-master/next
Merge branch kvm-arm64/pmu-unchained into kvmarm-master/next
Merge branch kvm-arm64/misc-6.2 into kvmarm-master/next
Merge remote-tracking branch 'arm64/for-next/sysregs' into kvmarm-master/next
Oliver Upton (19):
KVM: arm64: Combine visitor arguments into a context structure
KVM: arm64: Stash observed pte value in visitor context
KVM: arm64: Pass mm_ops through the visitor context
KVM: arm64: Don't pass kvm_pgtable through kvm_pgtable_walk_data
KVM: arm64: Add a helper to tear down unlinked stage-2 subtrees
KVM: arm64: Use an opaque type for pteps
KVM: arm64: Tear down unlinked stage-2 subtree after break-before-make
KVM: arm64: Protect stage-2 traversal with RCU
KVM: arm64: Atomically update stage 2 leaf attributes in parallel walks
KVM: arm64: Split init and set for table PTE
KVM: arm64: Make block->table PTE changes parallel-aware
KVM: arm64: Make leaf->leaf PTE changes parallel-aware
KVM: arm64: Make table->block changes parallel-aware
KVM: arm64: Handle stage-2 faults in parallel
KVM: arm64: Take a pointer to walker data in kvm_dereference_pteref()
KVM: arm64: Don't acquire RCU read lock for exclusive table walks
KVM: arm64: Reject shared table walks in the hyp code
KVM: selftests: Have perf_test_util signal when to stop vCPUs
KVM: selftests: Build access_tracking_perf_test for arm64
Peter Collingbourne (4):
mm: Add PG_arch_3 page flag
KVM: arm64: unify the tests for VMAs in memslots when MTE is enabled
KVM: arm64: permit all VM_MTE_ALLOWED mappings with MTE enabled
Documentation: document the ABI changes for KVM_CAP_ARM_MTE
Quentin Perret (14):
KVM: arm64: Move hyp refcount manipulation helpers to common header file
KVM: arm64: Allow attaching of non-coalescable pages to a hyp pool
KVM: arm64: Back the hypervisor 'struct hyp_page' array for all memory
KVM: arm64: Fix-up hyp stage-1 refcounts for all pages mapped at EL2
KVM: arm64: Prevent the donation of no-map pages
KVM: arm64: Add helpers to pin memory shared with the hypervisor at EL2
KVM: arm64: Add per-cpu fixmap infrastructure at EL2
KVM: arm64: Add generic hyp_memcache helpers
KVM: arm64: Consolidate stage-2 initialisation into a single function
KVM: arm64: Instantiate guest stage-2 page-tables at EL2
KVM: arm64: Return guest memory from EL2 via dedicated teardown memcache
KVM: arm64: Unmap 'kvm_arm_hyp_percpu_base' from the host
KVM: arm64: Explicitly map 'kvm_vgic_global_state' at EL2
KVM: arm64: Don't unnecessarily map host kernel sections at EL2
Reiji Watanabe (9):
KVM: arm64: selftests: Use FIELD_GET() to extract ID register fields
KVM: arm64: selftests: Add write_dbg{b,w}{c,v}r helpers in debug-exceptions
KVM: arm64: selftests: Remove the hard-coded {b,w}pn#0 from debug-exceptions
KVM: arm64: selftests: Add helpers to enable debug exceptions
KVM: arm64: selftests: Stop unnecessary test stage tracking of debug-exceptions
KVM: arm64: selftests: Change debug_version() to take ID_AA64DFR0_EL1
KVM: arm64: selftests: Add a test case for a linked breakpoint
KVM: arm64: selftests: Add a test case for a linked watchpoint
KVM: arm64: selftests: Test with every breakpoint/watchpoint
Ricardo Koller (14):
KVM: selftests: Add a userfaultfd library
KVM: selftests: aarch64: Add virt_get_pte_hva() library function
KVM: selftests: Add missing close and munmap in __vm_mem_region_delete()
KVM: selftests: aarch64: Construct DEFAULT_MAIR_EL1 using sysreg.h macros
tools: Copy bitfield.h from the kernel sources
KVM: selftests: Stash backing_src_type in struct userspace_mem_region
KVM: selftests: Add vm->memslots[] and enum kvm_mem_region_type
KVM: selftests: Fix alignment in virt_arch_pgd_alloc() and vm_vaddr_alloc()
KVM: selftests: Use the right memslot for code, page-tables, and data allocations
KVM: selftests: aarch64: Add aarch64/page_fault_test
KVM: selftests: aarch64: Add userfaultfd tests into page_fault_test
KVM: selftests: aarch64: Add dirty logging tests into page_fault_test
KVM: selftests: aarch64: Add readonly memslot tests into page_fault_test
KVM: selftests: aarch64: Add mix of tests into page_fault_test
Ryan Roberts (3):
KVM: arm64: Fix kvm init failure when mode!=vhe and VA_BITS=52.
KVM: arm64: Fix PAR_TO_HPFAR() to work independently of PA_BITS.
KVM: arm64: Fix benign bug with incorrect use of VA_BITS
Usama Arif (1):
KVM: arm64: Fix pvtime documentation
Will Deacon (9):
KVM: arm64: Unify identifiers used to distinguish host and hypervisor
KVM: arm64: Implement do_donate() helper for donating memory
KVM: arm64: Include asm/kvm_mmu.h in nvhe/mem_protect.h
KVM: arm64: Rename 'host_kvm' to 'host_mmu'
KVM: arm64: Initialise hypervisor copies of host symbols unconditionally
KVM: arm64: Provide I-cache invalidation by virtual address at EL2
KVM: arm64: Maintain a copy of 'kvm_arm_vmid_bits' at EL2
KVM: arm64: Use the pKVM hyp vCPU structure in handle___kvm_vcpu_run()
arm64/sysreg: Remove duplicate definitions from asm/sysreg.h
Zhiyuan Dai (1):
KVM: arm64: Fix typo in comment
Documentation/virt/kvm/api.rst | 41 +-
Documentation/virt/kvm/arm/pvtime.rst | 14 +-
Documentation/virt/kvm/devices/arm-vgic-its.rst | 5 +-
Documentation/virt/kvm/devices/vcpu.rst | 2 +
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/kvm_arm.h | 8 +-
arch/arm64/include/asm/kvm_asm.h | 7 +-
arch/arm64/include/asm/kvm_host.h | 76 +-
arch/arm64/include/asm/kvm_hyp.h | 3 +
arch/arm64/include/asm/kvm_mmu.h | 2 +-
arch/arm64/include/asm/kvm_pgtable.h | 175 ++-
arch/arm64/include/asm/kvm_pkvm.h | 38 +
arch/arm64/include/asm/mte.h | 65 +-
arch/arm64/include/asm/pgtable.h | 4 +-
arch/arm64/include/asm/sysreg.h | 138 ---
arch/arm64/include/uapi/asm/kvm.h | 1 +
arch/arm64/kernel/cpufeature.c | 212 ++--
arch/arm64/kernel/elfcore.c | 2 +-
arch/arm64/kernel/hibernate.c | 2 +-
arch/arm64/kernel/image-vars.h | 15 -
arch/arm64/kernel/mte.c | 21 +-
arch/arm64/kvm/Kconfig | 2 +
arch/arm64/kvm/arm.c | 90 +-
arch/arm64/kvm/guest.c | 18 +-
arch/arm64/kvm/hyp/hyp-constants.c | 3 +
arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 25 +-
arch/arm64/kvm/hyp/include/nvhe/memory.h | 27 +
arch/arm64/kvm/hyp/include/nvhe/mm.h | 18 +-
arch/arm64/kvm/hyp/include/nvhe/pkvm.h | 68 ++
arch/arm64/kvm/hyp/include/nvhe/spinlock.h | 10 +-
arch/arm64/kvm/hyp/nvhe/cache.S | 11 +
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 110 +-
arch/arm64/kvm/hyp/nvhe/hyp-smp.c | 2 +
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 521 ++++++++-
arch/arm64/kvm/hyp/nvhe/mm.c | 167 ++-
arch/arm64/kvm/hyp/nvhe/page_alloc.c | 29 +-
arch/arm64/kvm/hyp/nvhe/pkvm.c | 436 ++++++++
arch/arm64/kvm/hyp/nvhe/setup.c | 98 +-
arch/arm64/kvm/hyp/pgtable.c | 652 ++++++------
arch/arm64/kvm/hyp/vhe/Makefile | 2 +-
arch/arm64/kvm/mmu.c | 193 ++--
arch/arm64/kvm/pkvm.c | 138 ++-
arch/arm64/kvm/pmu-emul.c | 482 ++++-----
arch/arm64/kvm/reset.c | 29 -
arch/arm64/kvm/sys_regs.c | 157 ++-
arch/arm64/kvm/vgic/vgic-its.c | 20 +
arch/arm64/lib/mte.S | 2 +-
arch/arm64/mm/copypage.c | 7 +-
arch/arm64/mm/fault.c | 4 +-
arch/arm64/mm/mteswap.c | 16 +-
arch/arm64/tools/gen-sysreg.awk | 2 +-
arch/arm64/tools/sysreg | 754 +++++++++++++
arch/x86/include/asm/kvm_host.h | 2 -
arch/x86/kvm/x86.c | 15 +-
fs/proc/page.c | 3 +-
include/kvm/arm_pmu.h | 15 +-
include/kvm/arm_vgic.h | 1 +
include/linux/kernel-page-flags.h | 1 +
include/linux/kvm_dirty_ring.h | 20 +-
include/linux/kvm_host.h | 10 +-
include/linux/page-flags.h | 3 +-
include/trace/events/mmflags.h | 9 +-
include/uapi/linux/kvm.h | 1 +
mm/Kconfig | 8 +
mm/huge_memory.c | 3 +-
tools/include/linux/bitfield.h | 176 ++++
tools/testing/selftests/kvm/.gitignore | 1 +
tools/testing/selftests/kvm/Makefile | 3 +
.../selftests/kvm/aarch64/aarch32_id_regs.c | 3 +-
.../selftests/kvm/aarch64/debug-exceptions.c | 311 ++++--
.../selftests/kvm/aarch64/page_fault_test.c | 1112 ++++++++++++++++++++
.../selftests/kvm/access_tracking_perf_test.c | 8 +-
tools/testing/selftests/kvm/demand_paging_test.c | 228 +---
tools/testing/selftests/kvm/dirty_log_test.c | 53 +-
.../selftests/kvm/include/aarch64/processor.h | 35 +-
.../testing/selftests/kvm/include/kvm_util_base.h | 31 +-
.../testing/selftests/kvm/include/perf_test_util.h | 3 +
.../selftests/kvm/include/userfaultfd_util.h | 45 +
.../testing/selftests/kvm/lib/aarch64/processor.c | 55 +-
tools/testing/selftests/kvm/lib/elf.c | 3 +-
tools/testing/selftests/kvm/lib/kvm_util.c | 84 +-
tools/testing/selftests/kvm/lib/perf_test_util.c | 3 +
tools/testing/selftests/kvm/lib/riscv/processor.c | 29 +-
tools/testing/selftests/kvm/lib/s390x/processor.c | 8 +-
tools/testing/selftests/kvm/lib/userfaultfd_util.c | 186 ++++
tools/testing/selftests/kvm/lib/x86_64/processor.c | 13 +-
.../kvm/memslot_modification_stress_test.c | 6 +-
tools/testing/selftests/kvm/memslot_perf_test.c | 317 ++++--
virt/kvm/Kconfig | 6 +
virt/kvm/dirty_ring.c | 46 +-
virt/kvm/kvm_main.c | 65 +-
91 files changed, 6073 insertions(+), 1773 deletions(-)
create mode 100644 arch/arm64/kvm/hyp/include/nvhe/pkvm.h
create mode 100644 tools/include/linux/bitfield.h
create mode 100644 tools/testing/selftests/kvm/aarch64/page_fault_test.c
create mode 100644 tools/testing/selftests/kvm/include/userfaultfd_util.h
create mode 100644 tools/testing/selftests/kvm/lib/userfaultfd_util.c
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