Series is inspired by vmx exception test framework series[1]. Set up a test framework that verifies an exception occurring in L2 is forwarded to the right place (L1 or L2). Tests two conditions for each exception. 1) Exception generated in L2, is handled by L2 when L2 exception handler is registered. 2) Exception generated in L2, is handled by L1 when intercept exception bit map is set in L1. Above tests were added to verify 8 different exceptions #GP, #UD, #DE, #BP, #NM, #OF, #DB, #AC. There are 3 patches in this series 1) Added routines to set/clear PT_USER_MASK to make #AC test work for nSVM. 2) exception_mnemonic patch is taken from the Aaron's vmx series[1]. 3) Added test infrastructure and exception tests. [1] https://lore.kernel.org/all/20220125203127.1161838-1-aaronlewis@xxxxxxxxxx/ Aaron Lewis (1): x86: Make exception_mnemonic() visible to the tests Manali Shukla (2): x86: Add routines to set/clear PT_USER_MASK for all pages x86: nSVM: Add an exception test framework and tests lib/x86/desc.c | 2 +- lib/x86/desc.h | 1 + lib/x86/vm.c | 54 ++++++++++++++ lib/x86/vm.h | 3 + x86/svm_tests.c | 185 ++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 244 insertions(+), 1 deletion(-) -- 2.30.2
