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v6.12.39
linux-yocto/arch/x86/kernel
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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>
2025-07-17 18:37:14 +02:00
..
acpi x86/acpi: Don't limit CPUs to 1 for Xen PV guests due to disabled ACPI 2025-04-20 10:15:05 +02:00
apic x86/apic: Always explicitly disarm TSC-deadline timer 2024-10-15 05:45:18 -07:00
cpu x86/rdrand: Disable RDSEED on AMD Cyan Skillfish 2025-07-17 18:37:14 +02:00
fpu x86/pkeys: Simplify PKRU update in signal frame 2025-07-06 11:01:47 +02:00
kprobes Probes updates for v6.10: 2024-05-17 18:29:30 -07:00
.gitignore
alternative.c x86/ibt: Handle FineIBT in handle_cfi_failure() 2025-05-29 11:02:50 +02:00
amd_gart_64.c change alloc_pages name in dma_map_ops to avoid name conflicts 2024-04-25 20:55:53 -07:00
amd_nb.c x86/amd_nb: Use rdmsr_safe() in amd_get_mmconfig_range() 2025-03-13 13:01:38 +01:00
aperture_64.c x86/pci: Use PCI_HEADER_TYPE_* instead of literals 2023-12-01 15:00:43 -06:00
apm_32.c x86/apm_32: Remove dead function apm_get_battery_status() 2024-02-21 19:38:03 +01:00
asm-offsets_32.c
asm-offsets_64.c
asm-offsets.c x86/bugs: Rename CONFIG_CALL_DEPTH_TRACKING => CONFIG_MITIGATION_CALL_DEPTH_TRACKING 2024-01-10 10:52:28 +01:00
audit_64.c x86/audit: Fix -Wmissing-variable-declarations warning for ia32_xyz_class 2023-08-30 10:11:16 +02:00
bootflag.c
callthunks.c x86/xen: remove hypercall page 2024-12-19 18:13:24 +01:00
cet.c x86/fred: Clear WFE in missing-ENDBRANCH #CPs 2025-01-02 10:34:22 +01:00
cfi.c x86/ibt: Handle FineIBT in handle_cfi_failure() 2025-05-29 11:02:50 +02:00
check.c
cpuid.c x86/cpuid: make cpuid_class a static const structure 2023-08-05 08:31:41 +02:00
crash_dump_32.c
crash_dump_64.c
crash.c x86/mm: Add callbacks to prepare encrypted memory for kexec 2024-06-17 17:46:02 +02:00
devicetree.c x86/of: Don't use DTB for SMP setup if ACPI is enabled 2025-03-22 12:54:20 -07:00
doublefault_32.c x86: Avoid missing-prototype warnings for doublefault code 2023-05-18 11:56:18 -07:00
dumpstack_32.c
dumpstack_64.c
dumpstack.c x86/dumpstack: Fix inaccurate unwinding from exception stacks due to misplaced assignment 2025-04-10 14:39:21 +02:00
e820.c x86/e820: Fix handling of subpage regions when calculating nosave ranges in e820__register_nosave_regions() 2025-04-20 10:16:01 +02:00
early_printk.c
early-quirks.c drm: move i915_pciids.h under include/drm/intel 2024-05-31 16:11:29 +03:00
ebda.c
eisa.c x86/EISA: Dereference memory directly instead of using readl() 2024-08-29 15:57:09 +02:00
espfix_64.c x86/fred: No ESPFIX needed when FRED is enabled 2024-01-31 22:01:51 +01:00
fred.c x86/fred: Fix the FRED RSP0 MSR out of sync with its per-CPU cache 2025-01-23 17:23:03 +01:00
ftrace_32.S x86/headers: Replace #include <asm/export.h> with #include <linux/export.h> 2023-10-03 10:38:07 +02:00
ftrace_64.S x86/headers: Replace #include <asm/export.h> with #include <linux/export.h> 2023-10-03 10:38:07 +02:00
ftrace.c x86/its: Add support for ITS-safe return thunk 2025-05-18 08:24:59 +02:00
head_32.S x86/cleanups changes for v6.10: 2024-05-13 18:21:24 -07:00
head_64.S x86/kernel: Move page table macros to header 2024-09-25 16:06:03 +02:00
head32.c x86/microcode: Consolidate the loader enablement checking 2025-05-18 08:24:54 +02:00
head64.c x86/boot/64: Strip percpu address space when setting up GDT descriptors 2024-08-25 16:07:51 +02:00
hpet.c x86/apic/msi: Use DOMAIN_BUS_GENERIC_MSI for HPET/IO-APIC domain search 2024-02-25 18:53:08 +01:00
hw_breakpoint.c
i8237.c
i8253.c x86/i8253: Call clockevent_i8253_disable() with interrupts disabled 2025-05-02 07:59:26 +02:00
i8259.c x86/i8259: Skip probing when ACPI/MADT advertises PCAT compatibility 2023-10-27 20:36:49 +02:00
ibt_selftest.S x86/ibt: Convert IBT selftest to asm 2023-08-17 17:07:09 +02:00
idt.c x86/irq: Install posted MSI notification handler 2024-04-30 00:54:42 +02:00
io_delay.c
ioport.c x86/iopl: Cure TIF_IO_BITMAP inconsistencies 2025-06-19 15:32:36 +02:00
irq_32.c
irq_64.c fix missing vmalloc.h includes 2024-04-25 20:55:49 -07:00
irq_work.c x86/apic: Wrap IPI calls into helper functions 2023-08-09 12:00:55 -07:00
irq.c x86/irq: Ensure initial PIR loads are performed exactly once 2025-06-19 15:32:04 +02:00
irqflags.S x86/headers: Replace #include <asm/export.h> with #include <linux/export.h> 2023-10-03 10:38:07 +02:00
irqinit.c x86/fred: Invoke FRED initialization code to enable FRED 2024-01-31 22:03:36 +01:00
itmt.c sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
jailhouse.c xen: allow mapping ACPI data using a different physical address 2024-09-12 08:25:07 +02:00
jump_label.c
kdebugfs.c
kexec-bzimage64.c - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 2024-03-14 17:43:30 -07:00
kgdb.c x86/kgdb: Fix a kerneldoc warning when build with W=1 2023-09-24 11:00:13 +02:00
ksysfs.c
kvm.c x86/kvm: Override default caching mode for SEV-SNP and TDX 2024-10-20 07:07:02 -04:00
kvmclock.c kvmclock: Unexport kvmclock clocksource 2024-02-07 17:05:21 +01:00
ldt.c x86/bugs: Rename CONFIG_PAGE_TABLE_ISOLATION => CONFIG_MITIGATION_PAGE_TABLE_ISOLATION 2024-01-10 10:52:28 +01:00
machine_kexec_32.c
machine_kexec_64.c x86/kexec: Allocate PGD for x86_64 transition page tables separately 2025-02-17 10:04:54 +01:00
Makefile x86: Ignore stack unwinding in KCOV 2024-08-08 17:36:35 +02:00
mmconf-fam10h_64.c xen: allow mapping ACPI data using a different physical address 2024-09-12 08:25:07 +02:00
module.c x86/its: Use dynamic thunks for indirect branches 2025-05-18 08:24:59 +02:00
mpparse.c x86/mpparse: Cleanup apic_printk()s 2024-08-07 18:13:28 +02:00
msr.c x86/MSR: make msr_class a static const structure 2023-08-05 08:31:42 +02:00
nmi_selftest.c x86/apic: Wrap IPI calls into helper functions 2023-08-09 12:00:55 -07:00
nmi.c x86/nmi: Add an emergency handler in nmi_desc & use it in nmi_shootdown_cpus() 2025-05-29 11:02:38 +02:00
paravirt-spinlocks.c
paravirt.c x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT 2025-04-20 10:16:00 +02:00
pci-dma.c x86: always initialize xen-swiotlb when xen-pcifront is enabling 2023-07-31 17:54:27 +02:00
pcspeaker.c
perf_regs.c
platform-quirks.c x86/quirks: Include linux/pnp.h for arch_pnpbios_disabled() 2023-05-18 11:56:18 -07:00
pmem.c
probe_roms.c x86/sev: Skip ROM range scans and validation for SEV-SNP guests 2024-03-26 15:22:35 +01:00
process_32.c x86/fpu: Clean up FPU switching in the middle of task switching 2023-10-20 11:24:22 +02:00
process_64.c x86/mm: Cleanup prctl_enable_tagged_addr() nr_bits error checking 2024-07-02 11:33:44 -07:00
process.c x86/process: Move the buffer clearing before MONITOR 2025-07-10 16:05:14 +02:00
process.h
ptrace.c x86: Add PTRACE interface for shadow stack 2023-08-02 15:01:51 -07:00
pvclock.c locking/atomic: treewide: use raw_atomic*_<op>() 2023-06-05 09:57:20 +02:00
quirks.c
reboot_fixups_32.c
reboot.c x86/nmi: Add an emergency handler in nmi_desc & use it in nmi_shootdown_cpus() 2025-05-29 11:02:38 +02:00
relocate_kernel_32.S
relocate_kernel_64.S x86: Fix build regression with CONFIG_KEXEC_JUMP enabled 2024-12-14 20:04:13 +01:00
resource.c
rethook.c
rtc.c x86/rtc: Remove unused intel-mid.h 2024-04-03 08:24:48 -07:00
setup_percpu.c x86/asm: Add DB flag to 32-bit percpu GDT entry 2023-12-20 10:57:51 +01:00
setup.c x86/fred: Enable FRED right after init_mem_mapping() 2024-08-13 21:59:21 +02:00
sev_verify_cbit.S x86/boot: Use 32-bit XOR to clear registers 2024-03-01 12:47:37 +01:00
shstk.c uprobe: Add uretprobe syscall to speed up return probe 2024-06-12 08:44:28 +09:00
signal_32.c x86/fred/signal: Prevent immediate repeat of single step trap on return from SIGTRAP handler 2025-06-19 15:32:37 +02:00
signal_64.c x86/fred/signal: Prevent immediate repeat of single step trap on return from SIGTRAP handler 2025-06-19 15:32:37 +02:00
signal.c x86/pkeys: Update PKRU to enable all pkeys before XSAVE 2024-08-02 14:12:21 +02:00
smp.c - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 2024-03-14 17:43:30 -07:00
smpboot.c x86/smpboot: Fix INIT delay assignment for extended Intel Families 2025-05-29 11:02:11 +02:00
stacktrace.c
static_call.c x86/its: Add support for ITS-safe return thunk 2025-05-18 08:24:59 +02:00
step.c x86/msr: Prepare for including <linux/percpu.h> into <asm/msr.h> 2024-03-04 12:01:39 +01:00
sys_ia32.c
sys_x86_64.c mm: make arch_get_unmapped_area() take vm_flags by default 2024-09-09 16:39:13 -07:00
tboot.c
time.c x86: stop playing stack games in profile_pc() 2024-06-28 14:27:22 -07:00
tls.c
tls.h
trace_clock.c
trace.c
tracepoint.c
traps.c x86/traps: Initialize DR6 by writing its architectural reset value 2025-07-06 11:01:42 +02:00
tsc_msr.c x86/tsc_msr: Switch to new Intel CPU model defines 2024-04-29 10:31:34 +02:00
tsc_sync.c x86/tsc: Trust initial offset in architectural TSC-adjust MSRs 2024-04-29 23:27:16 +02:00
tsc.c x86/tsc: Always save/restore TSC sched_clock() on suspend/resume 2025-04-10 14:39:37 +02:00
umip.c
unwind_frame.c
unwind_guess.c
unwind_orc.c x86/unwind/orc: Fix unwind for newly forked tasks 2024-12-05 14:01:21 +01:00
uprobes.c uprobes/x86: Harden uretprobe syscall trampoline check 2025-04-10 14:39:37 +02:00
verify_cpu.S
vm86_32.c
vmcore_info_32.c crash: split vmcoreinfo exporting code out from crash_core.c 2024-02-23 17:48:22 -08:00
vmcore_info_64.c crash: split vmcoreinfo exporting code out from crash_core.c 2024-02-23 17:48:22 -08:00
vmlinux.lds.S x86/its: Add support for ITS-safe return thunk 2025-05-18 08:24:59 +02:00
vsmp_64.c x86/apic: Remove unused phys_pkg_id() callback 2024-02-15 22:07:38 +01:00
x86_init.c xen: allow mapping ACPI data using a different physical address 2024-09-12 08:25:07 +02:00