Pawan Gupta
0616411a70
x86/bugs: Add "unknown" reporting for MMIO Stale Data ...
commit 7df548840c496b0141fb2404b889c346380c2b22 upstream.
Older Intel CPUs that are not in the affected processor list for MMIO
Stale Data vulnerabilities currently report "Not affected" in sysfs,
which may not be correct. Vulnerability status for these older CPUs is
unknown.
Add known-not-affected CPUs to the whitelist. Report "unknown"
mitigation status for CPUs that are not in blacklist, whitelist and also
don't enumerate MSR ARCH_CAPABILITIES bits that reflect hardware
immunity to MMIO Stale Data vulnerabilities.
Mitigation is not deployed when the status is unknown.
[ bp: Massage, fixup. ]
Fixes: 8d50cdf8b834 ("x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data")
Suggested-by: Andrew Cooper <andrew.cooper3@citrix.com>
Suggested-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/a932c154772f2121794a5f2eded1a11013114711.1657846269.git.pawan.kumar.gupta@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-05 10:23:56 +02:00
ACPI / x86: Work around broken XSDT on Advantech DAC-BJ01 board
2022-03-28 08:06:06 +02:00
x86/ioapic: Ignore IRQ2 again
2021-03-24 10:59:25 +01:00
x86/bugs: Add "unknown" reporting for MMIO Stale Data
2022-09-05 10:23:56 +02:00
x86/fpu: Make init_fpstate correct with optimized XSAVE
2021-08-26 08:37:25 -04:00
x86/kprobes: Restore BTF if the single-stepping is cancelled
2020-12-29 13:45:00 +01:00
x86/paravirt: Remove 'noreplace-paravirt' cmdline option
2018-02-13 12:36:01 +01:00
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:43:55 +01:00
x86/apb_timer: Convert to hotplug state machine
2016-07-15 10:40:22 +02:00
param: convert some "on"/"off" users to strtobool
2016-03-17 15:09:34 -07:00
x86/apm: Don't access __preempt_count with zeroed fs
2018-07-25 11:23:58 +02:00
x86: Move thread_info into task_struct
2016-09-15 08:25:13 +02:00
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:43:55 +01:00
sched/x86: Rewrite the switch_to() code
2016-08-24 12:31:41 +02:00
x86/corruption-check: Fix panic in memory_corruption_check() when boot option without value is provided
2018-11-13 11:16:47 -08:00
x86/crash: Fix crash_setup_memmap_entries() out-of-bounds access
2021-04-28 12:07:17 +02:00
x86/devicetree: Fix device IRQ settings in DT
2018-05-30 07:50:48 +02:00
x86/entry/64: Wipe KASAN stack shadow before rewind_stack_do_exit()
2018-09-05 09:20:10 +02:00
x86/dumpstack: Remove dump_trace() and related callbacks
2016-09-20 08:29:34 +02:00
x86/dumpstack: Remove dump_trace() and related callbacks
2016-09-20 08:29:34 +02:00
x86/e820: Don't merge consecutive E820_PRAM ranges
2016-10-16 11:16:48 +02:00
Merge tag 'drm-for-v4.9' of git://people.freedesktop.org/~airlied/linux
2016-10-11 18:12:22 -07:00
x86: Fix misspellings in comments
2016-02-24 08:44:58 +01:00
x86/boot: Simplify EBDA-vs-BIOS reservation logic
2016-07-22 11:46:01 +02:00
kaiser: add "nokaiser" boot option, using ALTERNATIVE
2018-01-05 15:46:34 +01:00
x86: Don't include linux/irq.h from asm/hardirq.h
2018-08-15 18:14:52 +02:00
x86/boot: Run reserve_bios_regions() after we initialize the memory map
2016-08-11 11:14:59 +02:00
x86: Clear .brk area at early boot
2022-07-21 20:40:32 +02:00
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:43:55 +01:00
Revert "x86/mm: Expand static page table for fixmap space"
2018-11-10 07:42:59 -08:00
x86/hpet: Prevent potential NULL pointer dereference
2019-04-20 09:07:50 +02:00
x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error
2019-04-20 09:07:50 +02:00
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
x86/i8259: Use printk_deferred() to prevent deadlock
2020-08-21 11:01:52 +02:00
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
x86/iopl: Fix iopl capability check on Xen PV
2016-03-17 09:49:27 +01:00
x86/irq: Ensure PI wakeup handler is unregistered before module unload
2021-11-26 11:48:20 +01:00
x86: Don't include linux/irq.h from asm/hardirq.h
2018-08-15 18:14:52 +02:00
x86/irq/64: Limit IST stack overflow check to #DB stack
2019-05-31 06:48:22 -07:00
x86/irq, trace: Add __irq_entry annotation to x86's platform IRQ handlers
2017-11-21 09:23:24 +01:00
x86/paravirt: Make native_save_fl() extern inline
2018-07-22 14:27:35 +02:00
x86: Don't include linux/irq.h from asm/hardirq.h
2018-08-15 18:14:52 +02:00
x86/asm: Stop depending on ptrace.h in alternative.h
2016-04-29 11:56:40 +02:00
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
x86/kexec: Use up-to-dated screen_info copy to fill boot params
2020-11-10 10:24:02 +01:00
x86/kgbd: Use NMI_VECTOR not APIC_DM_NMI
2020-01-29 10:24:29 +01:00
x86: Apply more __ro_after_init and const
2016-08-10 14:55:05 +02:00
kvm/x86: Handle async PF in RCU read-side critical sections
2017-10-05 09:44:03 +02:00
Merge branch 'linus' into x86/asm, to pick up recent fixes
2016-09-15 08:24:53 +02:00
kaiser: fix unlikely error in alloc_ldt_struct()
2018-01-05 15:46:34 +01:00
livepatch/x86: apply alternatives and paravirt patches after relocations
2016-08-18 23:41:55 +02:00
x86/kexec: Avoid double free_page() upon do_kexec_load() failure
2018-05-25 16:12:59 +02:00
x86/kexec: Avoid double free_page() upon do_kexec_load() failure
2018-05-25 16:12:59 +02:00
x86/paravirt: Make native_save_fl() extern inline
2018-07-22 14:27:35 +02:00
x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
2018-01-17 09:38:59 +01:00
x86/build: Treat R_386_PLT32 relocation as R_386_PC32
2021-03-07 11:25:57 +01:00
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:43:55 +01:00
x86/cpufeature: Carve out X86_FEATURE_*
2016-01-30 11:22:17 +01:00
x86/speculation/mds: Clear CPU buffers on exit to user
2019-05-14 19:19:40 +02:00
x86, locking/spinlocks: Remove ticket (spin)lock implementation
2016-09-30 10:56:00 +02:00
x86/paravirt: Fix some warning messages
2018-11-10 07:42:55 -08:00
x86, locking/spinlocks: Remove ticket (spin)lock implementation
2016-09-30 10:56:00 +02:00
x86/paravirt: Dont patch flush_tlb_single
2018-01-05 15:46:35 +01:00
x86/pci-calgary: Fix iommu_free() comparison of unsigned expression >= 0
2017-05-14 14:00:17 +02:00
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
x86: Fix non-static inlines
2016-04-16 13:21:40 +02:00
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
swiotlb: Convert swiotlb_force from int to enum
2017-01-26 08:24:44 +01:00
x86/boot: Reorganize and clean up the BIOS area reservation code
2016-07-21 10:11:57 +02:00
x86/kernel: Audit and remove any unnecessary uses of module.h
2016-07-14 15:06:41 +02:00
x86/speculation: Prevent rogue cross-process SSBD shutdown
2020-06-20 10:24:08 +02:00
x86/speculation: Change misspelled STIPB to STIBP
2020-06-20 10:24:10 +02:00
sched/x86: Save [ER]FLAGS on context switch
2019-05-21 18:48:56 +02:00
sched/x86: Save [ER]FLAGS on context switch
2019-05-21 18:48:56 +02:00
x86/ptrace: fix up botched merge of spectrev1 fix
2019-09-06 10:19:53 +02:00
KVM: x86: introduce get_kvmclock_ns
2016-09-20 09:26:15 +02:00
x86/mce: Check for alternate indication of machine check recovery on Skylake
2018-07-03 11:23:05 +02:00
x86/reboot: Limit Dell Optiplex 990 quirk to early BIOS versions
2021-09-22 11:42:58 +02:00
x86/e820: Prepare e280 code for switch to dynamic storage
2016-09-21 15:02:12 +02:00
char/genrtc: x86: remove remnants of asm/rtc.h
2016-06-04 00:20:07 +02:00
x86/speculation/l1tf: Make sure the first page is always reserved
2018-08-15 18:14:44 +02:00
x86/boot/32: Fix UP boot on Quark and possibly other platforms
2018-03-22 09:17:58 +01:00
x86: Introduce TS_COMPAT_RESTART to fix get_nr_restart_syscall()
2021-03-24 10:59:25 +01:00
x86/signals: Fix lower/upper bound reporting in compat siginfo
2017-04-21 09:31:20 +02:00
x86/reboot: Always use NMI fallback when shutdown via reboot vector IPI fails
2019-10-05 12:30:18 +02:00
x86: Fix early boot crash on gcc-10, third try
2020-05-20 08:15:41 +02:00
x86/stacktrace: Convert save_stack_trace_*() to use the new unwinder
2016-09-20 08:29:33 +02:00
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
2022-06-14 16:52:28 +02:00
x86/mm: Cleanup the control_va_addr_alignment() __setup handler
2022-06-14 16:52:32 +02:00
x86/sysfb_efi: Add quirks for some devices with swapped width and height
2019-08-04 09:33:42 +02:00
x86/sysfb: Fix check for bad VRAM size
2020-02-28 15:42:21 +01:00
x86/pti: Make unpoison of pgd for trusted boot work for real
2018-02-13 12:35:55 +01:00
x86/cpufeature: Remove cpu_has_clflush
2016-03-31 13:35:09 +02:00
x86/mm: Always enable CONFIG_DEBUG_RODATA and remove the Kconfig option
2016-02-22 08:51:38 +01:00
x86: Don't use module.h just for AUTHOR / LICENSE tags
2016-07-14 13:04:20 +02:00
x86_64: Fix jiffies ODR violation
2020-06-20 10:24:08 +02:00
x86/tls: Fix possible spectre-v1 in do_get_thread_area()
2019-07-21 09:05:58 +02:00
kaiser: merged update
2018-01-05 15:46:32 +01:00
x86/speculation/mds: Revert CPU buffer clear on double fault exit
2019-05-21 18:48:55 +02:00
x86/cpu: Sanitize FAM6_ATOM naming
2019-05-14 19:19:34 +02:00
x86/tsc: Add missing header to tsc_msr.c
2018-10-03 17:01:45 -07:00
x86/unwind: Disable KASAN checks for non-current tasks
2019-05-08 07:19:06 +02:00
x86/unwind: Fix guess-unwinder regression
2016-11-28 07:47:54 +01:00
x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes
2020-12-11 13:38:01 +01:00
x86/cpufeature: Carve out X86_FEATURE_*
2016-01-30 11:22:17 +01:00
x86/vm86/32: Fix POPF emulation
2018-03-22 09:17:59 +01:00
x86, vmlinux.lds: Page-align end of ..page_aligned sections
2020-08-21 11:01:49 +02:00
x86: Apply more __ro_after_init and const
2016-08-10 14:55:05 +02:00
0616411a70