AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/x86/boot/compressed
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Joerg Roedel 86ce43f7dd x86/boot/compressed/64: Check SEV encryption in 64-bit boot-path 
Check whether the hypervisor reported the correct C-bit when running as
an SEV guest. Using a wrong C-bit position could be used to leak
sensitive data from the guest to the hypervisor.

The check function is in a separate file:

  arch/x86/kernel/sev_verify_cbit.S

so that it can be re-used in the running kernel image.

 [ bp: Massage. ]

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lkml.kernel.org/r/20201028164659.27002-4-joro@8bytes.org
2020-10-29 18:06:52 +01:00
..
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
acpi.c x86/boot: Fix -Wint-to-pointer-cast build warning 2020-05-04 15:22:16 +02:00
cmdline.c x86/boot: Build the command line parsing code unconditionally 2019-02-01 11:51:01 +01:00
cpuflags.c x86/sev-es: Check required CPU features for SEV-ES 2020-09-10 21:49:25 +02:00
early_serial_console.c x86, boot: Don't compile early_serial_console.c when !CONFIG_EARLY_PRINTK 2014-08-17 14:58:24 -07:00
efi_thunk_64.S efi/x86: Drop the special GDT for the EFI thunk 2020-05-24 00:25:15 +02:00
error.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
error.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
head_32.S x86/boot: Remove run-time relocations from head_{32,64}.S 2020-08-14 12:52:35 +02:00
head_64.S x86/boot/64: Explicitly map boot_params and command line 2020-10-19 19:39:50 +02:00
ident_map_64.c x86/boot/compressed/64: Check SEV encryption in 64-bit boot-path 2020-10-29 18:06:52 +01:00
idt_64.c x86/boot/compressed/64: Setup a GHCB-based VC Exception handler 2020-09-07 19:45:25 +02:00
idt_handlers_64.S x86/boot/compressed/64: Setup a GHCB-based VC Exception handler 2020-09-07 19:45:25 +02:00
kaslr.c x86/boot/64: Initialize 5-level paging variables earlier 2020-10-19 12:47:21 +02:00
kernel_info.S x86/boot: Introduce setup_indirect 2019-11-12 16:21:15 +01:00
Makefile This feature enhances the current guest memory encryption support 2020-10-14 10:21:34 -07:00
mem_encrypt.S x86/boot/compressed/64: Check SEV encryption in 64-bit boot-path 2020-10-29 18:06:52 +01:00
misc.c x86/boot/compressed/64: Setup a GHCB-based VC Exception handler 2020-09-07 19:45:25 +02:00
misc.h x86/boot/compressed/64: Check SEV encryption in 64-bit boot-path 2020-10-29 18:06:52 +01:00
mkpiggy.c x86/boot: Remove run-time relocations from head_{32,64}.S 2020-08-14 12:52:35 +02:00
pgtable_64.c treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
pgtable.h x86/boot/compressed/64: Set EFER.LME=1 in 32-bit trampoline before returning to long mode 2019-01-29 21:58:59 +01:00
sev-es.c x86/sev-es: Check required CPU features for SEV-ES 2020-09-10 21:49:25 +02:00
string.c x86/boot: Provide KASAN compatible aliases for string routines 2019-05-24 08:44:16 +02:00
vmlinux.lds.S x86/boot/compressed: Add missing debugging sections to output 2020-09-01 10:03:18 +02:00