[+Jeffrey] On Thu, Jan 16, 2020 at 07:49:12PM +0530, Sai Prakash Ranjan wrote: > KRYO3XX silver CPU cores and KRYO4XX silver, gold CPU cores > are not affected by Spectre variant 2. Add them to spectre_v2 > safe list to correct ARM_SMCCC_ARCH_WORKAROUND_1 warning and > vulnerability sysfs value. > > Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@xxxxxxxxxxxxxx> > --- > arch/arm64/include/asm/cputype.h | 6 ++++++ > arch/arm64/kernel/cpu_errata.c | 3 +++ > 2 files changed, 9 insertions(+) > > diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h > index aca07c2f6e6e..7219cddeba66 100644 > --- a/arch/arm64/include/asm/cputype.h > +++ b/arch/arm64/include/asm/cputype.h > @@ -85,6 +85,9 @@ > #define QCOM_CPU_PART_FALKOR_V1 0x800 > #define QCOM_CPU_PART_FALKOR 0xC00 > #define QCOM_CPU_PART_KRYO 0x200 > +#define QCOM_CPU_PART_KRYO_3XX_SILVER 0x803 > +#define QCOM_CPU_PART_KRYO_4XX_GOLD 0x804 > +#define QCOM_CPU_PART_KRYO_4XX_SILVER 0x805 Jeffrey is the only person I know who understands the CPU naming here, so I've added him in case this needs either renaming or extending to cover other CPUs. I wouldn't be at all surprised if we need a function call rather than a bunch of table entries... That said, the internet claims that KRYO4XX gold is based on Cortex-A76, and so CSV2 should be set... Will
