On 20/02/2020 10:07, speck for Borislav Petkov wrote: > On Thu, Feb 06, 2020 at 02:11:02PM -0800, speck for mark gross wrote: >> From: mark gross >> Subject: [PATCH 1/2] Add capability to specify a range of steppings in the >> >> Intel has produced processors with the same CPUID family+model. Code >> may need to check the stepping when programming model specific behavior. >> >> Add an API to allow easy specification of stepping or range of steppings >> with a 16 bit bitmask. >> >> Update cpu_vuln_whitelist using this new API. >> >> I implemented this in the way I did to avoid modifying x86_cpu_id as >> that structure is an exported ABI and any change would impact user mode >> code using the structure. >> >> Signed-off-by: mark gross >> Reviewed-by: tony luck >> --- >> arch/x86/include/asm/cpu_device_id.h | 12 ++++++++++++ >> arch/x86/kernel/cpu/common.c | 28 ++++++++++++++-------------- >> arch/x86/kernel/cpu/match.c | 26 ++++++++++++++++++++++++++ >> 3 files changed, 52 insertions(+), 14 deletions(-) > Why isn't this sent to lkml like a normal patch? > Because it is under embargo until May 12th. ~Andrew