kernel/arch/x86/boot/compressed/efi.c, branch linux-rolling-stable

x86: Do not include in several files

2024-01-30T14:17:24Z

Remove the include statement for from several files that don't require it and limit the exposure of those definitions within the Linux kernel code. [ bp: Massage commit message. ] Signed-off-by: Thomas Zimmermann Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Ard Biesheuvel Acked-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20240112095000.8952-5-tzimmermann@suse.de

x86/boot: Add an efi.h header for the decompressor

2022-04-17T19:15:49Z

Copy the needed symbols only and remove the kernel proper includes. No functional changes. Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/YlCKWhMJEMUgJmjF@zn.tnic

x86/compressed/acpi: Move EFI kexec handling into common code

2022-04-06T15:07:24Z

Future patches for SEV-SNP-validated CPUID will also require early parsing of the EFI configuration. Incrementally move the related code into a set of helpers that can be re-used for that purpose. In this instance, the current acpi.c kexec handling is mainly used to get the alternative EFI config table address provided by kexec via a setup_data entry of type SETUP_EFI. If not present, the code then falls back to normal EFI config table address provided by EFI system table. This would need to be done by all call-sites attempting to access the EFI config table, so just have efi_get_conf_table() handle that automatically. Signed-off-by: Michael Roth Signed-off-by: Brijesh Singh Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/20220307213356.2797205-29-brijesh.singh@amd.com

x86/compressed/acpi: Move EFI vendor table lookup to helper

2022-04-06T15:07:19Z

Future patches for SEV-SNP-validated CPUID will also require early parsing of the EFI configuration. Incrementally move the related code into a set of helpers that can be re-used for that purpose. [ bp: Unbreak unnecessarily broken lines. ] Signed-off-by: Michael Roth Signed-off-by: Brijesh Singh Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/20220307213356.2797205-28-brijesh.singh@amd.com

x86/compressed/acpi: Move EFI config table lookup to helper

2022-04-06T15:07:15Z

Future patches for SEV-SNP-validated CPUID will also require early parsing of the EFI configuration. Incrementally move the related code into a set of helpers that can be re-used for that purpose. [ bp: Remove superfluous zeroing of a stack variable. ] Signed-off-by: Michael Roth Signed-off-by: Brijesh Singh Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/20220307213356.2797205-27-brijesh.singh@amd.com

x86/compressed/acpi: Move EFI system table lookup to helper

2022-04-06T15:07:09Z

Future patches for SEV-SNP-validated CPUID will also require early parsing of the EFI configuration. Incrementally move the related code into a set of helpers that can be re-used for that purpose. Signed-off-by: Michael Roth Signed-off-by: Brijesh Singh Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/20220307213356.2797205-26-brijesh.singh@amd.com

x86/compressed/acpi: Move EFI detection to helper

2022-04-06T15:07:02Z

Future patches for SEV-SNP-validated CPUID will also require early parsing of the EFI configuration. Incrementally move the related code into a set of helpers that can be re-used for that purpose. First, carve out the functionality which determines the EFI environment type the machine is booting on. [ bp: Massage commit message. ] Signed-off-by: Michael Roth Signed-off-by: Brijesh Singh Signed-off-by: Borislav Petkov Link: https://lore.kernel.org/r/20220307213356.2797205-25-brijesh.singh@amd.com