From: Hongye Lin <linhongye@h-partners.com> driver inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IC76OZ ---------------------------------------------------------------------- Armv8.7 introduces single-copy atomic 64-byte loads and stores instructions and its variants named under FEAT_{LS64, LS64_V}. These features are identified by ID_AA64ISAR1_EL1.LS64 and the use of such instructions in userspace (EL0) can be trapped. In order to support the use of corresponding instructions in userspace: Make ID_AA64ISAR1_EL1.LS64 visbile to userspace Add identifying and enabling in the cpufeature list Expose these support of these features to userspace through HWCAP3 and cpuinfo Mark Brown (2): arm64: Support AT_HWCAP3 binfmt_elf: Wire up AT_HWCAP3 at AT_HWCAP4 Peter Bergner (1): uapi/auxvec: Define AT_HWCAP3 and AT_HWCAP4 aux vector, entries Yicong Yang (4): arm64: Provide basic EL2 setup for FEAT_{LS64, LS64_V} usage at EL0/1 arm64: Add support for FEAT_{LS64, LS64_V} Workaround the issue when compile with CONFIG_FUNCTION_ALIGNMENT_64B KVM: arm64: Enable FEAT_{LS64, LS64_V} in the supported guest Documentation/arch/arm64/booting.rst | 12 +++++ Documentation/arch/arm64/elf_hwcaps.rst | 12 +++-- arch/arm64/Kconfig | 4 ++ arch/arm64/include/asm/cpufeature.h | 3 +- arch/arm64/include/asm/el2_setup.h | 13 ++++++ arch/arm64/include/asm/hwcap.h | 7 ++- arch/arm64/include/uapi/asm/hwcap.h | 6 +++ arch/arm64/kernel/cpufeature.c | 61 +++++++++++++++++++++++++ arch/arm64/kernel/cpuinfo.c | 2 + arch/arm64/kvm/hyp/include/hyp/switch.h | 6 +++ arch/arm64/tools/cpucaps | 4 +- fs/binfmt_elf.c | 6 +++ fs/binfmt_elf_fdpic.c | 6 +++ fs/compat_binfmt_elf.c | 10 ++++ include/uapi/linux/auxvec.h | 2 + 15 files changed, 147 insertions(+), 7 deletions(-) -- 2.33.0