mbox series

[0/5] Minimize the need to move the kernel in the EFI stub

Message ID 20200301230537.2247550-1-nivedita@alum.mit.edu
Headers show
Series Minimize the need to move the kernel in the EFI stub | expand

Message

Arvind Sankar March 1, 2020, 11:05 p.m. UTC 
This series adds the ability to use the entire PE image space for
decompression, provides the preferred address to the PE loader via the
header, and finally restricts efi_relocate_kernel to cases where we
really need it rather than whenever we were loaded at something other
than preferred address.

Based on tip:efi/core + the cleanup series just posted [1]
[1] https://lore.kernel.org/linux-efi/20200301230436.2246909-1-nivedita@alum.mit.edu/

Arvind Sankar (5):
  x86/boot/compressed/32: Save the output address instead of
    recalculating it
  efi/x86: Decompress at start of PE image load address
  efi/x86: Add kernel preferred address to PE header
  efi/x86: Remove extra headroom for setup block
  efi/x86: Don't relocate the kernel unless necessary

 arch/x86/boot/compressed/head_32.S      | 42 +++++++++++++++--------
 arch/x86/boot/compressed/head_64.S      | 38 +++++++++++++++++++--
 arch/x86/boot/header.S                  |  6 ++--
 arch/x86/boot/tools/build.c             | 44 ++++++++++++++++++-------
 drivers/firmware/efi/libstub/x86-stub.c | 32 +++++++++++++++---
 5 files changed, 127 insertions(+), 35 deletions(-)