On 22/06/21 23:00, Sean Christopherson wrote:
The first chunk of this series (everything up to the lib/vmalloc patch)
are cleanups and bug fixes for existing nSVM tests that I collected on
my first attempt at the new NPT test. I originally wanted to piggyback
the existing "v1" nSVM tests and implemented the fixes/cleanups, but that
approach didn't go so well because of the v1 infrastructure limitations.
The common lib/vmalloc changes are to allow arch code to pass arbitrary
data to its setup_mmu() function. x86-64 uses the param to avoid marking
PTEs a USER so that tests can enable SMEP (#PF if supervisor mode fetches
from a USER PTE) without exploding or having to duplicate all page tables.
The "new" test targets nested NPT by running L1 and L2 with different
EFER.NX and CR4.SMEP settings to verify that KVM uses the correct MMU
settings when injecting page faults.
Sean Christopherson (12):
nSVM: Provide expected and actual exit codes on VMRUN test failure
nSVM: Replace open coded NX manipulation with appropriate macros
nSVM: Reset the VMCB before every v1 test
nSVM: Explicitly save/update/restore EFER.NX for NPT NX test
nSVM: Remove NPT reserved bits tests (new one on the way)
nSVM: Stop forcing EFER.NX=1 for all tests
nSVM: Remove a superfluous modification of guest EFER.NX in NPT NX
test
nSVM: Clear guest's EFER.NX in NPT NX test
lib/vmalloc: Let arch code pass a value to its setup_mmu() helper
x86: Let tests omit PT_USER_MASK when configuring virtual memory
x86: Add GBPAGES CPUID macro, clean up CPUID comments
nSVM: Add test for NPT reserved bit and #NPF error code behavior
lib/arm/mmu.c | 2 +-
lib/s390x/mmu.c | 3 +-
lib/vmalloc.c | 9 +-
lib/vmalloc.h | 4 +-
lib/x86/processor.h | 15 +--
lib/x86/vm.c | 15 ++-
s390x/uv-host.c | 2 +-
x86/svm.c | 10 +-
x86/svm_tests.c | 220 +++++++++++++++++++++++++++++++-------------
9 files changed, 196 insertions(+), 84 deletions(-)
Queued, thanks.
Paolo
