Changes in Makefile

c297aa7d - kselftest/arm64: Enable build of PAC tests with LLVM=1

Mon, 11 Nov 2024 18:32:58 +0000

kselftest/arm64: Enable build of PAC tests with LLVM=1Currently we don't build the PAC selftests when building with LLVM=1 sincewe attempt to test for PAC support in the toolchain before we've set up thebuild system to point at LLVM in lib.mk, which has to be one of the lastthings in the Makefile.Since all versions of LLVM supported for use with the kernel have PACsupport we can just sidestep the issue by just assuming PAC is there whendoing a LLVM=1 build.Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20241111-arm64-selftest-pac-clang-v1-1-08599ceee418@kernel.orgSigned-off-by: Catalin Marinas List of files: /linux-6.15/tools/testing/selftests/arm64/pauth/Makefile

806a15b2 - kselftests/arm64: add PAuth test for whether exec() changes keys

Fri, 18 Sep 2020 10:47:14 +0000

kselftests/arm64: add PAuth test for whether exec() changes keysKernel documentation states that it will change PAuth keys on exec() calls.Verify that all keys are correctly switched to new ones.Signed-off-by: Boyan Karatotev Reviewed-by: Vincenzo Frascino Reviewed-by: Amit Daniel Kachhap Acked-by: Shuah Khan Cc: Shuah Khan Cc: Catalin Marinas Cc: Will Deacon Link: https://lore.kernel.org/r/20200918104715.182310-4-boian4o1@gmail.comSigned-off-by: Will Deacon List of files: /linux-6.15/tools/testing/selftests/arm64/pauth/Makefile

766d95b1 - kselftests/arm64: add nop checks for PAuth tests

Fri, 18 Sep 2020 10:47:13 +0000

kselftests/arm64: add nop checks for PAuth testsPAuth adds sign/verify controls to enable and disable groups ofinstructions in hardware for compatibility with libraries that do notimplement PAuth. The kernel always enables them if it detects PAuth.Add a test that checks that each group of instructions is enabled, if thekernel reports PAuth as detected.Note: For groups, for the purpose of this patch, we intend instructionsthat use a certain key.Signed-off-by: Boyan Karatotev Reviewed-by: Vincenzo Frascino Reviewed-by: Amit Daniel Kachhap Acked-by: Shuah Khan Cc: Shuah Khan Cc: Catalin Marinas Cc: Will Deacon Link: https://lore.kernel.org/r/20200918104715.182310-3-boian4o1@gmail.comSigned-off-by: Will Deacon List of files: /linux-6.15/tools/testing/selftests/arm64/pauth/Makefile

e74e1d55 - kselftests/arm64: add a basic Pointer Authentication test

Fri, 18 Sep 2020 10:47:12 +0000

kselftests/arm64: add a basic Pointer Authentication testPAuth signs and verifies return addresses on the stack. It does so byinserting a Pointer Authentication code (PAC) into some of the unused topbits of an address. This is achieved by adding paciasp/autiasp instructionsat the beginning and end of a function.This feature is partially backwards compatible with earlier versions of theARM architecture. To coerce the compiler into emitting fully backwardscompatible code the main file is compiled to target an earlier ARM version.This allows the tests to check for the feature and print meaningful errormessages instead of crashing.Add a test to verify that corrupting the return address results in aSIGSEGV on return.Signed-off-by: Boyan Karatotev Reviewed-by: Vincenzo Frascino Reviewed-by: Amit Daniel Kachhap Acked-by: Shuah Khan Cc: Shuah Khan Cc: Catalin Marinas Cc: Will Deacon Link: https://lore.kernel.org/r/20200918104715.182310-2-boian4o1@gmail.comSigned-off-by: Will Deacon List of files: /linux-6.15/tools/testing/selftests/arm64/pauth/Makefile