kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-22 19:14:51 +00:00
Code Issues Releases Packages Activity
linux/tools/arch
History
Mikhail Paulyshka a68b858557 x86/rdrand: Disable RDSEED on AMD Cyan Skillfish 
commit 5b937a1ed6 upstream.

AMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an error that
causes RDSEED to always return 0xffffffff, while RDRAND works correctly.

Mask the RDSEED cap for this CPU so that both /proc/cpuinfo and direct CPUID
read report RDSEED as unavailable.

  [ bp: Move to amd.c, massage. ]

Signed-off-by: Mikhail Paulyshka <me@mixaill.net>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/20250524145319.209075-1-me@mixaill.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-07-17 18:37:14 +02:00
..
alpha/include tools headers uapi: Sync asm-generic/mman-common.h and linux/mman.h 2019-03-28 14:31:56 -03:00
arc/include/uapi/asm tools arch uapi: Copy missing unistd.h headers for arc, hexagon and riscv 2019-05-02 16:00:20 -04:00
arm/include tools headers kvm: Sync kvm headers with the kernel sources 2019-12-02 12:54:13 -03:00
arm64 tools headers arm64: Sync arm64's cputype.h with the kernel sources 2024-10-28 12:33:50 -03:00
csky/include/uapi/asm csky: Add support for libdw 2019-05-15 16:36:46 -03:00
hexagon/include/uapi/asm tools arch: Remove uapi bitsperlong.h of hexagon and microblaze 2023-06-22 17:04:37 +02:00
loongarch/include selftests: vDSO: unconditionally build chacha test 2024-10-08 15:21:29 -06:00
microblaze/include/uapi/asm tools arch: Remove uapi bitsperlong.h of hexagon and microblaze 2023-06-22 17:04:37 +02:00
mips/include perf tools: Copy uapi/asm/perf_regs.h from the kernel for MIPS 2021-06-01 10:07:46 -03:00
parisc/include/uapi/asm parisc: Drop the HP-UX ENOSYM and EREMOTERELEASE error codes 2023-11-25 09:43:18 +01:00
powerpc/include selftests: vDSO: unconditionally build chacha test 2024-10-08 15:21:29 -06:00
riscv/include tools: Add riscv barrier implementation 2024-09-20 01:46:46 -07:00
s390/include selftests: vDSO: unconditionally build chacha test 2024-10-08 15:21:29 -06:00
sh/include sh: remove sh5 support 2020-06-01 14:48:52 -04:00
sparc/include tools headers UAPI: Update tools's copy of mman.h headers 2019-07-29 09:02:58 -03:00
x86 x86/rdrand: Disable RDSEED on AMD Cyan Skillfish 2025-07-17 18:37:14 +02:00
xtensa/include tools headers uapi: Sync asm-generic/mman-common.h and linux/mman.h 2019-03-28 14:31:56 -03:00