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Date: Wed, 20 Sep 2023 17:34:59 +0200
From: Paolo Bonzini <pbonzini@...hat.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [kvm-unit-tests GIT PULL] x86: Fixes, cleanups and new testscases
On Sat, Sep 2, 2023 at 1:13 AM Sean Christopherson <seanjc@...gle.com> wrote:
>
> This is essentially v2 of the previous attempt[*], sans the fix for exectuable
> stack warnings (now fixed for all architectures), plus fixes for nVMX testcases
> related to 64-bit hosts (these *just* got posted, but it's not like anyone else
> is reviewing KUT x86 changes these days, so I don't see any point in waiting).
>
> There's one non-x86 change to fix a bug in processing "check" entries in
> unittests.cfg files. The majority of the x86 changes revolve around nSVM, PMU,
> and emulator tests.
>
> [*] https://lore.kernel.org/all/20230622211440.2595272-1-seanjc@google.com
>
> The following changes since commit e8f8554f810821e37f05112a46ae9775a029b5d1:
>
> Makefile: Move -no-pie from CFLAGS into LDFLAGS (2023-08-22 11:26:00 +0200)
>
> are available in the Git repository at:
>
> https://github.com/kvm-x86/kvm-unit-tests.git tags/kvm-x86-2023.09.01
>
> for you to fetch changes up to d4fba74a42d222d2cfdde65351fac3531a1d6f5c:
>
> nVMX: Fix the noncanonical HOST_RIP testcase (2023-09-01 15:58:19 -0700)
Pulled, thanks!
Paolo
>
> ----------------------------------------------------------------
> x86 fixes, cleanups, and new testcases, and a few generic changes
>
> - Fix a bug in runtime.bash that caused it to mishandle "check" strings with
> multiple entries, e.g. a test that depends on multiple module params
> - Make the PMU tests depend on vPMU support being enabled in KVM
> - Fix PMU's forced emulation test on CPUs with full-width writes
> - Add a PMU testcase for measuring TSX transactional cycles
> - Nested SVM testcase for virtual NMIs
> - Move a pile of code to ASM_TRY() and "safe" helpers
> - Set up the guest stack in the LBRV tests so that the tests don't fail if the
> compiler decides to generate function calls in guest code
> - Ignore the "mispredict" flag in nSVM's LBRV tests to fix false failures
> - Clean up usage of helpers that disable interrupts, e.g. stop inserting
> unnecessary nops
> - Add helpers to dedup code for programming the APIC timer
> - Fix a variety of bugs in nVMX testcases related to being a 64-bit host
>
> ----------------------------------------------------------------
> Like Xu (2):
> x86/pmu: Add Intel Guest Transactional (commited) cycles testcase
> x86/pmu: Wrap the written counter value with gp_counter_width
>
> Mathias Krause (15):
> x86: Drop types.h
> x86: Use symbolic names in exception_mnemonic()
> x86: Add vendor specific exception vectors
> x86/cet: Use symbolic name for #CP
> x86/access: Use 'bool' type as defined via libcflat.h
> x86/run_in_user: Preserve exception handler
> x86/run_in_user: Relax register constraints of inline asm
> x86/run_in_user: Reload SS after successful return
> x86/fault_test: Preserve exception handler
> x86/emulator64: Relax register constraints for usr_gs_mov()
> x86/emulator64: Switch test_sreg() to ASM_TRY()
> x86/emulator64: Add non-null selector test
> x86/emulator64: Switch test_jmp_noncanonical() to ASM_TRY()
> x86/emulator64: Switch test_mmx_movq_mf() to ASM_TRY()
> x86/emulator64: Test non-canonical memory access exceptions
>
> Maxim Levitsky (8):
> x86: replace irq_{enable|disable}() with sti()/cli()
> x86: introduce sti_nop() and sti_nop_cli()
> x86: add few helper functions for apic local timer
> x86: nSVM: Remove nop after stgi/clgi
> x86: nSVM: make svm_intr_intercept_mix_if/gif test a bit more robust
> x86: nSVM: use apic_start_timer/apic_stop_timer instead of open coding it
> x86: nSVM: Add nested shutdown interception test
> x86: nSVM: Remove defunct get_npt_pte() declaration
>
> Santosh Shukla (1):
> x86: nSVM: Add support for VNMI test
>
> Sean Christopherson (21):
> nSVM: Add helper to report fatal errors in guest
> x86: Add macros to wrap ASM_TRY() for single instructions
> x86: Convert inputs-only "safe" instruction helpers to asm_safe()
> x86: Add macros to wrap ASM_TRY() for single instructions with output(s)
> x86: Move invpcid_safe() to processor.h and convert to asm_safe()
> x86: Move XSETBV and XGETBV "safe" helpers to processor.h
> x86: nSVM: Set up a guest stack in LBRV tests
> lib: Expose a subset of VMX's assertion macros
> x86: Add defines for the various LBR record bit definitions
> x86: nSVM: Ignore mispredict bit in LBR records
> x86: nSVM: Replace check_dbgctl() with TEST_EXPECT_EQ() in LBRV test
> x86: nSVM: Print out RIP and LBRs from VMCB if LBRV guest test fails
> runtime: Convert "check" from string to array so that iterating works
> x86/pmu: Make PMU testcases dependent on vPMU being enabled in KVM
> nVMX: Test CR4.PCIDE can be set for 64-bit host iff PCID is supported
> nVMX: Assert CR4.PAE is set when testing 64-bit host
> nVMX: Assert that the test is configured for 64-bit mode
> nVMX: Rename vmlaunch_succeeds() to vmlaunch()
> nVMX: Shuffle test_host_addr_size() tests to "restore" CR4 and RIP
> nVMX: Drop testcase that falsely claims to verify vmcs.HOST_RIP[63:32]
> nVMX: Fix the noncanonical HOST_RIP testcase
>
> lib/util.h | 31 ++++
> lib/x86/apic.c | 38 ++++
> lib/x86/apic.h | 6 +
> lib/x86/desc.c | 43 +++--
> lib/x86/desc.h | 48 ++++++
> lib/x86/fault_test.c | 4 +-
> lib/x86/msr.h | 11 ++
> lib/x86/processor.h | 137 +++++++++------
> lib/x86/smp.c | 2 +-
> lib/x86/usermode.c | 38 ++--
> scripts/runtime.bash | 1 +
> x86/access.c | 11 +-
> x86/apic.c | 6 +-
> x86/asyncpf.c | 6 +-
> x86/cet.c | 2 +-
> x86/cmpxchg8b.c | 1 -
> x86/emulator.c | 1 -
> x86/emulator64.c | 105 +++++++-----
> x86/eventinj.c | 22 +--
> x86/hyperv_connections.c | 2 +-
> x86/hyperv_stimer.c | 4 +-
> x86/hyperv_synic.c | 6 +-
> x86/intel-iommu.c | 2 +-
> x86/ioapic.c | 15 +-
> x86/memory.c | 60 ++-----
> x86/pcid.c | 8 -
> x86/pmu.c | 52 +++++-
> x86/pmu_pebs.c | 1 -
> x86/svm.c | 17 +-
> x86/svm.h | 11 +-
> x86/svm_tests.c | 429 +++++++++++++++++++++++-----------------------
> x86/taskswitch2.c | 4 +-
> x86/tscdeadline_latency.c | 4 +-
> x86/types.h | 21 ---
> x86/unittests.cfg | 7 +-
> x86/vmexit.c | 18 +-
> x86/vmx.h | 32 +---
> x86/vmx_tests.c | 170 +++++++++---------
> x86/xsave.c | 31 +---
> 39 files changed, 779 insertions(+), 628 deletions(-)
> delete mode 100644 x86/types.h
>
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