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Krish Sadhukhan 6b13a18860 x86/cpu: Add hardware-enforced cache coherency as a CPUID feature 
commit 5866e9205b47a983a77ebc8654949f696342f2ab upstream.

In some hardware implementations, coherency between the encrypted and
unencrypted mappings of the same physical page is enforced. In such a system,
it is not required for software to flush the page from all CPU caches in the
system prior to changing the value of the C-bit for a page. This hardware-
enforced cache coherency is indicated by EAX[10] in CPUID leaf 0x8000001f.

 [ bp: Use one of the free slots in word 3. ]

Suggested-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200917212038.5090-2-krish.sadhukhan@oracle.com
Signed-off-by: Liam Merwick <liam.merwick@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-16 13:21:48 +01:00
..
acpi
ACPI: tables: x86: Reserve memory occupied by ACPI tables
2021-05-07 10:51:36 +02:00
apic
x86/ioapic: Force affinity setup before startup
2021-08-18 08:57:02 +02:00
cpu
x86/cpu: Add hardware-enforced cache coherency as a CPUID feature
2022-03-16 13:21:48 +01:00
fpu
x86/fpu: Make init_fpstate correct with optimized XSAVE
2021-08-26 08:36:11 -04:00
kprobes
x86/kprobes: Fix to check non boostable prefixes correctly
2021-05-14 09:44:23 +02:00
.gitignore
…
alternative.c
x86: Correct misc typos
2019-09-02 14:02:59 +02:00
amd_gart_64.c
dma-mapping: provide a better default ->get_required_mask
2019-09-04 11:13:19 +02:00
amd_nb.c
x86/amd_nb: Add AMD family 17h model 60h PCI IDs
2020-06-22 09:31:17 +02:00
apb_timer.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
2019-06-05 17:37:17 +02:00
aperture_64.c
x86/gart: Exclude GART aperture from kcore
2019-03-23 12:11:49 +01:00
apm_32.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118
2019-05-24 17:39:02 +02:00
asm-offsets_32.c
…
asm-offsets_64.c
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-09-17 12:04:39 -07:00
asm-offsets.c
x86/paravirt: Make read_cr2() CALLEE_SAVE
2019-07-17 23:17:37 +02:00
audit_64.c
…
bootflag.c
…
check.c
x86/headers: Fix -Wmissing-prototypes warning
2018-11-23 07:59:59 +01:00
cpuid.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 142
2019-05-30 11:25:17 -07:00
crash_dump_32.c
…
crash_dump_64.c
fs/core/vmcore: Move sev_active() reference to x86 arch code
2019-08-09 22:52:10 +10:00
crash.c
x86/crash: Fix crash_setup_memmap_entries() out-of-bounds access
2021-04-28 13:19:16 +02:00
devicetree.c
x86/headers: Fix -Wmissing-prototypes warning
2018-11-23 07:59:59 +01:00
doublefault.c
x86/doublefault/32: Fix stack canaries in the double fault handler
2019-11-29 10:09:51 +01:00
dumpstack_32.c
x86/irq/32: Rename hard/softirq_stack to hard/softirq_stack_ptr
2019-04-17 15:24:18 +02:00
dumpstack_64.c
x86/dumpstack/64: Don't evaluate exception stacks before setup
2019-11-05 00:51:35 +01:00
dumpstack.c
x86/dumpstack: Indicate PREEMPT_RT in dumps
2019-07-31 19:03:36 +02:00
e820.c
x86/e820: Use proper booleans instead of 0/1
2019-07-16 23:13:49 +02:00
early_printk.c
efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation
2019-02-04 08:27:30 +01:00
early-quirks.c
x86/gpu: Reserve stolen memory for first integrated Intel GPU
2022-01-27 09:19:26 +01:00
ebda.c
…
eisa.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 243
2019-06-19 17:09:07 +02:00
espfix_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288
2019-06-05 17:36:37 +02:00
ftrace_32.S
x86/asm/32: Add ENDs to some functions and relabel with SYM_CODE_*
2021-01-17 14:05:30 +01:00
ftrace_64.S
x86/stackframe, x86/ftrace: Add pt_regs frame annotations
2019-06-25 10:23:47 +02:00
ftrace.c
The main changes in this release include:
2019-07-18 11:51:00 -07:00
head32.c
x86/boot: Mostly revert commit ae7e1238e68f2a ("Add ACPI RSDP address to setup_header")
2018-11-20 09:43:10 +01:00
head64.c
x86/boot/64: Make level2_kernel_pgt pages invalid outside kernel area
2019-10-11 18:38:15 +02:00
head_32.S
x86/asm/32: Add ENDs to some functions and relabel with SYM_CODE_*
2021-01-17 14:05:30 +01:00
head_64.S
x86/irq/64: Update stale comment
2019-07-22 10:54:27 +02:00
hpet.c
x86/hpet: Use another crystalball to evaluate HPET usability
2021-10-13 10:08:21 +02:00
hw_breakpoint.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
i8237.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
i8253.c
x86/timer: Skip PIT initialization on modern chipsets
2019-06-29 11:35:35 +02:00
i8259.c
x86/i8259: Use printk_deferred() to prevent deadlock
2020-08-05 09:59:52 +02:00
idt.c
x86/idt: Keep spurious entries unset in system_vectors
2020-06-24 17:50:43 +02:00
ima_arch.c
x86/ima: use correct identifier for SetupMode variable
2020-02-28 17:22:18 +01:00
io_delay.c
x86/io_delay: Define IO_DELAY macros in C instead of Kconfig
2019-05-24 08:46:06 +02:00
ioport.c
x86: Lock down IO port access when the kernel is locked down
2019-08-19 21:54:16 -07:00
irq_32.c
x86/irq: Move IS_ERR_OR_NULL() check into common do_IRQ() code
2019-08-19 23:19:06 +02:00
irq_64.c
x86: fix vmap arguments in map_irq_stack
2020-06-22 09:30:57 +02:00
irq_work.c
…
irq.c
x86/irq: Ensure PI wakeup handler is unregistered before module unload
2021-11-17 09:48:19 +01:00
irqflags.S
…
irqinit.c
x86/irq/32: Handle irq stack allocation failure proper
2019-04-17 15:31:42 +02:00
itmt.c
proc/sysctl: add shared variables for range check
2019-07-18 17:08:07 -07:00
jailhouse.c
x86: Add "nopv" parameter to disable PV extensions
2019-07-17 08:09:58 +02:00
jump_label.c
x86/jump_label: Make tp_vec_nr static
2019-06-25 09:22:14 +02:00
kdebugfs.c
Driver Core and debugfs changes for 5.3-rc1
2019-07-12 12:24:03 -07:00
kexec-bzimage64.c
x86/kexec: Use up-to-dated screen_info copy to fill boot params
2020-11-10 12:37:29 +01:00
kgdb.c
x86/apic: Provide and use helper for send_IPI_allbutself()
2019-07-25 16:12:00 +02:00
ksysfs.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428
2019-06-05 17:37:16 +02:00
kvm.c
x86/kvm: Disable all PV features on crash
2021-06-10 13:37:16 +02:00
kvmclock.c
x86/kvmclock: Move this_cpu_pvti into kvmclock.h
2021-10-06 15:42:31 +02:00
ldt.c
x86: Convert some slow-path static_cpu_has() callers to boot_cpu_has()
2019-04-08 12:13:34 +02:00
livepatch.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
machine_kexec_32.c
x86/mm: Remove set_pages_x() and set_pages_nx()
2019-09-03 09:26:37 +02:00
machine_kexec_64.c
Merge branch 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-09 11:52:34 -07:00
Makefile
Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 17:34:44 -07:00
mmconf-fam10h_64.c
…
module.c
x86/build: Treat R_386_PLT32 relocation as R_386_PC32
2021-03-07 12:20:45 +01:00
mpparse.c
x86/boot: Fix memory leak in default_get_smp_config()
2019-07-16 23:13:48 +02:00
msr.c
x86/msr: Restrict MSR access when the kernel is locked down
2019-08-19 21:54:16 -07:00
nmi_selftest.c
…
nmi.c
x86/nmi: Fix nmi_handle() duration miscalculation
2020-10-29 09:57:30 +01:00
paravirt_patch.c
x86/paravirt: Standardize 'insn_buff' variable names
2019-04-29 16:05:49 +02:00
paravirt-spinlocks.c
…
paravirt.c
x86/paravirt: Drop {read,write}_cr8() hooks
2019-07-22 10:12:33 +02:00
pci-calgary_64.c
dma-mapping: explicitly wire up ->mmap and ->get_sgtable
2019-09-04 11:13:18 +02:00
pci-dma.c
x86/dma: Get rid of iommu_pass_through
2019-08-23 10:11:01 +02:00
pci-iommu_table.c
…
pci-swiotlb.c
dma-mapping: fix filename references
2019-09-03 08:36:30 +02:00
pcspeaker.c
…
perf_regs.c
perf/x86/regs: Check reserved bits
2019-06-24 19:19:24 +02:00
platform-quirks.c
…
pmem.c
…
probe_roms.c
…
process_32.c
x86/fpu: Correct pkru/xstate inconsistency
2022-03-02 11:41:03 +01:00
process_64.c
x86/fpu: Correct pkru/xstate inconsistency
2022-03-02 11:41:03 +01:00
process.c
x86/speculation: Prevent rogue cross-process SSBD shutdown
2020-06-17 16:40:25 +02:00
process.h
x86: Use the correct SPDX License Identifier in headers
2019-10-01 20:31:35 +02:00
ptrace.c
x86/ptrace: Mark expected switch fall-through
2019-08-07 15:12:01 +02:00
pvclock.c
x86/vdso: Switch to generic vDSO implementation
2019-06-22 21:21:10 +02:00
quirks.c
x86/PCI: Remove superfluous returns from void functions
2019-08-20 09:54:36 +02:00
reboot_fixups_32.c
…
reboot.c
x86/mm: Flush global TLB when switching to trampoline page-table
2022-01-27 09:19:42 +01:00
relocate_kernel_32.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
relocate_kernel_64.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
resource.c
…
rtc.c
…
setup_percpu.c
x86/irq/64: Split the IRQ stack into its own pages
2019-04-17 15:37:02 +02:00
setup.c
ACPI: x86: Call acpi_boot_table_init() after acpi_table_upgrade()
2021-05-07 10:51:37 +02:00
signal_compat.c
…
signal.c
x86/signal: Detect and prevent an alternate signal stack overflow
2021-07-20 16:10:49 +02:00
smp.c
x86/smp: Move smp_function_call implementations into IPI code
2019-07-25 16:12:01 +02:00
smpboot.c
x86/hotplug: Silence APIC only after all interrupts are migrated
2020-09-03 11:27:06 +02:00
stacktrace.c
x86/stacktrace: Fix reliable check for empty user task stacks
2020-08-05 09:59:51 +02:00
step.c
…
sys_x86_64.c
x86/compat: Adjust in_compat_syscall() to generic code under !COMPAT
2018-11-01 12:59:25 +01:00
sysfb_efi.c
x86/sysfb_efi: Add quirks for some devices with swapped width and height
2019-07-22 10:47:11 +02:00
sysfb_simplefb.c
x86/sysfb: Fix check for bad VRAM size
2020-02-24 08:36:29 +01:00
sysfb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
tboot.c
iommu/vt-d: Avoid panic if iommu init fails in tboot system
2020-11-24 13:29:17 +01:00
tce_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
time.c
x86_64: Fix jiffies ODR violation
2020-06-17 16:40:24 +02:00
tls.c
x86/tls: Fix possible spectre-v1 in do_get_thread_area()
2019-06-27 23:48:04 +02:00
tls.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 193
2019-05-30 11:29:21 -07:00
topology.c
x86/topology: Make DEBUG_HOTPLUG_CPU0 pr_info() more descriptive
2019-04-19 19:42:57 +02:00
trace_clock.c
…
tracepoint.c
x86/kernel: Fix more -Wmissing-prototypes warnings
2018-12-08 12:24:35 +01:00
traps.c
x86/mm, tracing: Fix CR2 corruption
2019-07-17 23:17:38 +02:00
tsc_msr.c
x86/tsr: Fix tsc frequency enumeration bug on Lightning Mountain SoC
2020-08-21 13:05:36 +02:00
tsc_sync.c
x86/tsc: Add a timer to make sure TSC_adjust is always checked
2021-12-08 09:01:14 +01:00
tsc.c
x86/tsc: Disable clocksource watchdog for TSC on qualified platorms
2021-12-08 09:01:14 +01:00
umip.c
x86/umip: Add emulation (spoofing) for UMIP covered instructions in 64-bit processes as well
2019-09-10 08:36:16 +02:00
unwind_frame.c
x86/stackframe/32: Provide consistent pt_regs
2019-06-25 10:23:47 +02:00
unwind_guess.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
unwind_orc.c
x86/unwind/orc: Disable KASAN checking in the ORC unwinder, part 2
2021-03-17 17:03:57 +01:00
uprobes.c
x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes
2020-12-11 13:23:30 +01:00
verify_cpu.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
vm86_32.c
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
vmlinux.lds.S
x86, vmlinux.lds: Page-align end of ..page_aligned sections
2020-07-29 10:18:45 +02:00
vsmp_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 346
2019-06-05 17:37:08 +02:00
x86_init.c
x86/timer: Don't skip PIT setup when APIC is disabled or in legacy mode
2020-02-11 04:35:52 -08:00