From Will Deacon <> Subject [PATCH v2 00/11] arm64 kpti hardening and variant 2 workarounds Date Fri, 5 Jan 2018 13:12:30 +0000 Hi again,



This is version two of the patches I posted yesterday:



http://lists.infradead.org/pipermail/linux-arm-kernel/2018-January/551838.html



Changes since v1:



* Added comment to BL/RET sequence in trampoline page

* Removed writeback addressing modes from Hyp PSCI register save/restore

* Avoid save/restore of x18/x19 across Hyp PSCI call

* Always print message when kpti is enabled

* Added tags



Cheers,



Will



--->8



Marc Zyngier (3):

arm64: Move post_ttbr_update_workaround to C code

arm64: KVM: Use per-CPU vector when BP hardening is enabled

arm64: KVM: Make PSCI_VERSION a fast path



Will Deacon (8):

arm64: use RET instruction for exiting the trampoline

arm64: Kconfig: Reword UNMAP_KERNEL_AT_EL0 kconfig entry

arm64: Take into account ID_AA64PFR0_EL1.CSV3

arm64: cpufeature: Pass capability structure to ->enable callback

drivers/firmware: Expose psci_get_version through psci_ops structure

arm64: Add skeleton to harden the branch predictor against aliasing

attacks

arm64: cputype: Add missing MIDR values for Cortex-A72 and Cortex-A75

arm64: Implement branch predictor hardening for affected Cortex-A CPUs



arch/arm/include/asm/kvm_mmu.h | 10 ++++

arch/arm64/Kconfig | 30 +++++++---

arch/arm64/include/asm/assembler.h | 13 -----

arch/arm64/include/asm/cpucaps.h | 3 +-

arch/arm64/include/asm/cputype.h | 4 ++

arch/arm64/include/asm/kvm_mmu.h | 38 ++++++++++++

arch/arm64/include/asm/mmu.h | 37 ++++++++++++

arch/arm64/include/asm/sysreg.h | 2 +

arch/arm64/kernel/Makefile | 4 ++

arch/arm64/kernel/bpi.S | 79 +++++++++++++++++++++++++

arch/arm64/kernel/cpu_errata.c | 116 +++++++++++++++++++++++++++++++++++++

arch/arm64/kernel/cpufeature.c | 13 ++++-

arch/arm64/kernel/entry.S | 12 +++-

arch/arm64/kvm/hyp/switch.c | 15 ++++-

arch/arm64/mm/context.c | 11 ++++

arch/arm64/mm/fault.c | 1 +

arch/arm64/mm/proc.S | 3 +-

drivers/firmware/psci.c | 2 +

include/linux/psci.h | 1 +

virt/kvm/arm/arm.c | 8 ++-

20 files changed, 372 insertions(+), 30 deletions(-)

create mode 100644 arch/arm64/kernel/bpi.S



--

2.1.4



