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[0/6] x86: head_64.S spring cleaning

Message ID 20220815134223.740112-1-ardb@kernel.org
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Series x86: head_64.S spring cleaning | expand

Message

Ard Biesheuvel Aug. 15, 2022, 1:42 p.m. UTC 
After doing some cleanup work on the EFI code in head_64.S, the mixed
mode code in particular, I noticed that the memory encryption pieces
could use some attention as well, so I cleaned that up too.

I have been sitting on these patches since November, waiting for the
right time to post them, i.e., after the SEV/SNP review had finished.
This has yet to happen, so I'm posting them now instead. Please feel
free to disregard for the time being, and propose a suitable timeframe
to repost them if this is likely to conflict with ongoing work.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Michael Roth <michael.roth@amd.com>

Ard Biesheuvel (6):
  x86/head_64: clean up mixed mode 32-bit entry code
  efi/x86: simplify IDT/GDT preserve/restore
  x86/compressed: move startup32_load_idt() out of startup code
  x86/compressed: move startup32_check_sev_cbit out of startup code
  x86/compressed: adhere to calling convention in
    get_sev_encryption_bit()
  x86/compressed: only build mem_encrypt.S if AMD_MEM_ENCRYPT=y

 arch/x86/boot/compressed/Makefile       |   8 +-
 arch/x86/boot/compressed/efi_mixed.S    | 352 ++++++++++++++++++++
 arch/x86/boot/compressed/efi_thunk_64.S | 195 -----------
 arch/x86/boot/compressed/head_32.S      |   4 -
 arch/x86/boot/compressed/head_64.S      | 309 +----------------
 arch/x86/boot/compressed/mem_encrypt.S  | 146 +++++++-
 drivers/firmware/efi/libstub/x86-stub.c |   3 +-
 7 files changed, 506 insertions(+), 511 deletions(-)
 create mode 100644 arch/x86/boot/compressed/efi_mixed.S
 delete mode 100644 arch/x86/boot/compressed/efi_thunk_64.S

Comments

Ard Biesheuvel Sept. 20, 2022, 2:55 p.m. UTC | #1 
On Mon, 15 Aug 2022 at 15:42, Ard Biesheuvel <ardb@kernel.org> wrote:
>
> After doing some cleanup work on the EFI code in head_64.S, the mixed
> mode code in particular, I noticed that the memory encryption pieces
> could use some attention as well, so I cleaned that up too.
>
> I have been sitting on these patches since November, waiting for the
> right time to post them, i.e., after the SEV/SNP review had finished.
> This has yet to happen, so I'm posting them now instead. Please feel
> free to disregard for the time being, and propose a suitable timeframe
> to repost them if this is likely to conflict with ongoing work.
>

Ping?

> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>
> Cc: Michael Roth <michael.roth@amd.com>
>
> Ard Biesheuvel (6):
>   x86/head_64: clean up mixed mode 32-bit entry code
>   efi/x86: simplify IDT/GDT preserve/restore
>   x86/compressed: move startup32_load_idt() out of startup code
>   x86/compressed: move startup32_check_sev_cbit out of startup code
>   x86/compressed: adhere to calling convention in
>     get_sev_encryption_bit()
>   x86/compressed: only build mem_encrypt.S if AMD_MEM_ENCRYPT=y
>
>  arch/x86/boot/compressed/Makefile       |   8 +-
>  arch/x86/boot/compressed/efi_mixed.S    | 352 ++++++++++++++++++++
>  arch/x86/boot/compressed/efi_thunk_64.S | 195 -----------
>  arch/x86/boot/compressed/head_32.S      |   4 -
>  arch/x86/boot/compressed/head_64.S      | 309 +----------------
>  arch/x86/boot/compressed/mem_encrypt.S  | 146 +++++++-
>  drivers/firmware/efi/libstub/x86-stub.c |   3 +-
>  7 files changed, 506 insertions(+), 511 deletions(-)
>  create mode 100644 arch/x86/boot/compressed/efi_mixed.S
>  delete mode 100644 arch/x86/boot/compressed/efi_thunk_64.S
>
> --
> 2.35.1
>