| Message ID | 20210622210047.3691840-1-seanjc@google.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | nSVM: NPT improvements and cleanups | expand |
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
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(-)