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85784d16c2
linux/arch/x86/kernel
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Lianbo Jiang 85784d16c2 x86/kexec: Set the C-bit in the identity map page table when SEV is active 
When SEV is active, the second kernel image is loaded into encrypted
memory. For that, make sure that when kexec builds the identity mapping
page table, the memory is encrypted (i.e., _PAGE_ENC is set).

 [ bp: Sort local args and OR in _PAGE_ENC for more clarity. ]

Co-developed-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: bhe@redhat.com
Cc: dyoung@redhat.com
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: kexec@lists.infradead.org
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190430074421.7852-3-lijiang@redhat.com
2019-06-20 10:07:12 +02:00
..
acpi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 430 2019-06-05 17:37:16 +02:00
apic treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 223 2019-05-30 11:29:55 -07:00
cpu Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-06-16 07:28:14 -10:00
fpu x86/fpu: Don't use current->mm to check for a kthread 2019-06-13 20:57:49 +02:00
kprobes treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
.gitignore
alternative.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
amd_gart_64.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 213 2019-05-30 11:29:54 -07:00
amd_nb.c x86/amd_nb: Add PCI device IDs for family 17h, model 30h 2018-11-07 21:36:09 +01:00
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 x86/entry/32: Load task stack from x86_tss.sp1 in SYSENTER handler 2018-07-20 01:11:36 +02:00
asm-offsets_64.c x86/irq/64: Split the IRQ stack into its own pages 2019-04-17 15:37:02 +02:00
asm-offsets.c x86/kernel: Fix more -Wmissing-prototypes warnings 2018-12-08 12:24:35 +01:00
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 x86: Fix various typos in comments 2018-12-03 10:49:13 +01:00
crash.c x86/crash: Add e820 reserved ranges to kdump kernel's e820 table 2019-06-20 10:05:06 +02:00
devicetree.c x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
doublefault.c
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/irq/64: Rename irq_stack_ptr to hardirq_stack_ptr 2019-04-17 15:27:10 +02:00
dumpstack.c x86/process: Don't mix user/kernel regs in 64bit __show_regs() 2018-09-06 14:33:12 +02:00
e820.c x86/e820, ioport: Add a new I/O resource descriptor IORES_DESC_RESERVED 2019-06-20 09:54:31 +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: add ElkhartLake to gen11 early quirks 2019-04-01 10:29:32 -07:00
ebda.c
eisa.c x86/EISA: Don't probe EISA bus for Xen PV guests 2018-09-11 23:36:50 +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 ftrace/x86: Remove mcount support 2019-05-10 12:33:09 -04:00
ftrace_64.S ftrace/x86: Remove mcount support 2019-05-10 12:33:09 -04:00
ftrace.c The major changes in this tracing update includes: 2019-05-15 16:05:47 -07:00
head32.c x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header") 2018-11-20 09:43:10 +01:00
head64.c x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header") 2018-11-20 09:43:10 +01:00
head_32.S x86/pgtable/32: Allocate 8k page-tables when PTI is enabled 2018-07-20 01:11:41 +02:00
head_64.S x86/irq/64: Split the IRQ stack into its own pages 2019-04-17 15:37:02 +02:00
hpet.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +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
i8259.c x86: Don't include linux/irq.h from asm/hardirq.h 2018-08-05 09:53:13 +02:00
idt.c x86/exceptions: Disconnect IST index and stack order 2019-04-17 15:01:09 +02:00
ima_arch.c x86/ima: Check EFI_RUNTIME_SERVICES before using 2019-05-19 20:27:12 -04:00
io_delay.c
ioport.c
irq_32.c x86/irq/32: Handle irq stack allocation failure proper 2019-04-17 15:31:42 +02:00
irq_64.c x86/irq/64: Remove stack overflow debug code 2019-04-17 15:41:48 +02:00
irq_work.c
irq.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
irqflags.S
irqinit.c x86/irq/32: Handle irq stack allocation failure proper 2019-04-17 15:31:42 +02:00
itmt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
jailhouse.c x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
jump_label.c x86/jump-label: Remove support for custom text poker 2019-04-30 12:37:55 +02:00
kdebugfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
kexec-bzimage64.c Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-03-10 17:32:04 -07:00
kgdb.c x86/kgdb: Return 0 from kgdb_arch_set_breakpoint() 2019-06-12 18:52:44 +02:00
ksysfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
kvm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 19 2019-05-21 11:28:46 +02:00
kvmclock.c x86: kvmguest: use TSC clocksource if invariant TSC is exposed 2019-02-20 22:48:52 +01:00
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/kexec: Allocate 8k PGDs for PTI 2018-07-30 13:53:48 +02:00
machine_kexec_64.c x86/kexec: Set the C-bit in the identity map page table when SEV is active 2019-06-20 10:07:12 +02:00
Makefile treewide: prefix header search paths with $(srctree)/ 2019-05-18 11:49:57 +09:00
mmconf-fam10h_64.c
module.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
mpparse.c x86/mm: Don't leak kernel addresses 2019-03-19 12:10:56 +01:00
msr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 142 2019-05-30 11:25:17 -07:00
nmi_selftest.c
nmi.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
paravirt_patch_32.c x86/paravirt: Remove unused _paravirt_ident_32 2018-10-30 09:55:31 +01:00
paravirt_patch_64.c x86/paravirt: Remove unused _paravirt_ident_32 2018-10-30 09:55:31 +01:00
paravirt-spinlocks.c x86/paravirt: Use a single ops structure 2018-09-03 16:50:35 +02:00
paravirt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102 2019-05-24 17:39:00 +02:00
pci-calgary_64.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pci-dma.c x86/dma: Remove the x86_dma_fallback_dev hack 2019-04-08 17:52:46 +02:00
pci-iommu_table.c x86/iommu: Use NULL instead of 0 2018-08-02 14:33:19 +02:00
pci-swiotlb.c dma-direct: merge swiotlb_dma_ops into the dma_direct code 2018-12-13 21:06:17 +01:00
pcspeaker.c x86/platform/pcspeaker: Use PTR_ERR_OR_ZERO() to fix ptr_ret.cocci warning 2018-07-24 09:46:42 +02:00
perf_regs.c perf/x86: Support outputting XMM registers 2019-04-16 12:19:36 +02:00
platform-quirks.c
pmem.c
probe_roms.c
process_32.c Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-07 10:24:10 -07:00
process_64.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
process.c Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-07 10:24:10 -07:00
process.h x86/speculation: Change misspelled STIPB to STIBP 2018-12-06 11:49:15 +01:00
ptrace.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
pvclock.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102 2019-05-24 17:39:00 +02:00
quirks.c x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
reboot_fixups_32.c
reboot.c Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 15:32:35 -07:00
relocate_kernel_32.S
relocate_kernel_64.S
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 x86/mm: Identify the end of the kernel area to be reserved 2019-06-20 09:22:47 +02:00
signal_compat.c
signal.c Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-07 10:24:10 -07:00
smp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 82 2019-05-24 17:37:52 +02:00
smpboot.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 82 2019-05-24 17:37:52 +02:00
stacktrace.c x86/stacktrace: Use common infrastructure 2019-04-29 12:37:57 +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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sysfb_simplefb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sysfb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
tboot.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335 2019-06-05 17:37:06 +02:00
tce_64.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
time.c Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 19:07:25 +01:00
tls.c
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/speculation/mds: Revert CPU buffer clear on double fault exit 2019-05-16 09:05:11 +02:00
tsc_msr.c x86/cpu: Sanitize FAM6_ATOM naming 2018-10-02 10:14:32 +02:00
tsc_sync.c
tsc.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
umip.c signal/x86: Use force_sig_fault where appropriate 2018-09-21 15:30:54 +02:00
unwind_frame.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
unwind_guess.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
unwind_orc.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
uprobes.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
verify_cpu.S
vm86_32.c x86: Convert some slow-path static_cpu_has() callers to boot_cpu_has() 2019-04-08 12:13:34 +02:00
vmlinux.lds.S x86/mm: Create a workarea in the kernel for SME early encryption 2019-06-20 09:44:26 +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/acpi, x86/boot: Take RSDP address for boot params if available 2018-10-10 10:44:22 +02:00