Implement Spectre variant 2 workarounds for NXP PowerPC Book3E processors. Diana Craciun (11): Add infrastructure to fixup branch predictor flush Add macro to flush the branch predictor Fix spectre_v2 mitigations reporting Emulate SPRN_BUCSR register Add nospectre_v2 command line argument Flush the branch predictor at each kernel entry (64bit) Flush the branch predictor at each kernel entry (32 bit) Flush branch predictor when entering KVM Enable runtime patching if nospectre_v2 boot arg is used Update Spectre v2 reporting Add FSL_PPC_BOOK3E as supported arch for nospectre_v2 boot arg
Documentation/admin-guide/kernel-parameters.txt | 2 +- arch/powerpc/include/asm/feature-fixups.h | 12 +++++++++++ arch/powerpc/include/asm/ppc_asm.h | 10 +++++++++ arch/powerpc/include/asm/setup.h | 7 +++++++ arch/powerpc/kernel/entry_64.S | 5 +++++ arch/powerpc/kernel/exceptions-64e.S | 26 ++++++++++++++++++++++- arch/powerpc/kernel/head_booke.h | 6 ++++++ arch/powerpc/kernel/head_fsl_booke.S | 15 +++++++++++++ arch/powerpc/kernel/security.c | 28 +++++++++++++++++++++++-- arch/powerpc/kernel/setup-common.c | 1 + arch/powerpc/kernel/vmlinux.lds.S | 8 +++++++ arch/powerpc/kvm/bookehv_interrupts.S | 4 ++++ arch/powerpc/kvm/e500_emulate.c | 5 +++++ arch/powerpc/lib/feature-fixups.c | 21 +++++++++++++++++++ arch/powerpc/mm/tlb_low_64e.S | 7 +++++++ 15 files changed, 153 insertions(+), 4 deletions(-) -- 2.5.5
