Sorry for forgetting adding kvm-unit-test prefix. I will resend with the
patch series with the right prefix.
On 3/19/2023 4:22 PM, Binbin Wu wrote:
Intel Linear-address masking (LAM) [1], modifies the checking that is applied to
*64-bit* linear addresses, allowing software to use of the untranslated address
bits for metadata.
The patch series add test cases for LAM:
Patch 1 makes change to HOST_CR3 tests in vmx.
If LAM is supported, VM entry allows CR3.LAM_U48 (bit 62) and CR3.LAM_U57
(bit 61) to be set in CR3 field. Change the test result expectations when
setting CR3.LAM_U48 or CR3.LAM_U57 on vmlaunch tests when LAM is supported.
Patch 2~4 add test cases for LAM supervisor mode and user mode, including:
- For supervisor mode
CR4.LAM_SUP toggle
Memory/MMIO access with tagged pointer
INVLPG
INVPCID
INVVPID (also used to cover VMX instruction vmexit path)
- For user mode
CR3 LAM bits toggle
Memory/MMIO access with tagged pointer
[1] Intel ISE https://cdrdv2.intel.com/v1/dl/getContent/671368
Chapter Linear Address Masking (LAM)
---
Changelog
v1 --> v2:
Add cases to test INVLPG, INVPCID, INVVPID with LAM_SUP
Add cases to test LAM_{U48,U57}
Binbin Wu (3):
x86: Allow setting of CR3 LAM bits if LAM supported
x86: Add test cases for LAM_{U48,U57}
x86: Add test case for INVVPID with LAM
Robert Hoo (1):
x86: Add test case for LAM_SUP
lib/x86/processor.h | 7 +
x86/Makefile.x86_64 | 1 +
x86/lam.c | 340 ++++++++++++++++++++++++++++++++++++++++++++
x86/unittests.cfg | 10 ++
x86/vmx_tests.c | 79 +++++++++-
5 files changed, 436 insertions(+), 1 deletion(-)
create mode 100644 x86/lam.c
base-commit: e3c5c3ef2524c58023073c0fadde2e8ae3c04ec6
