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From: Ard Biesheuvel <ardb@kernel.org>
To: linux-arm-kernel@lists.infradead.org
Cc: catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com,
	linux-efi@vger.kernel.org, Ard Biesheuvel <ardb@kernel.org>
Subject: [PATCH 0/2] efi/arm64: execute the kernel in place if possible
Date: Thu, 26 Mar 2020 17:59:03 +0100
Message-ID: <20200326165905.2240-1-ardb@kernel.org> (raw)

Update the relocation logic in the EFI stub for arm64 so it runs the
kernel in place if it was loaded by firmware at an address which allows
doing so. Then, update the PE/COFF header metadata and increase the
section alignment to force the UEFI image loader to honour the minimal
alignment requirement imposed by the kernel proper.

Ard Biesheuvel (2):
  efi/libstub/arm64: avoid copying the kernel unnecessarily
  efi/arm64: increase the PE/COFF alignment so the kernel can run in
    place

 arch/arm64/kernel/efi-header.S            | 2 +-
 arch/arm64/kernel/image-vars.h            | 7 +++++++
 drivers/firmware/efi/libstub/arm64-stub.c | 9 +++++++++
 3 files changed, 17 insertions(+), 1 deletion(-)

-- 
2.17.1


             reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-26 16:59 Ard Biesheuvel [this message]
2020-03-26 16:59 ` [PATCH 1/2] efi/libstub/arm64: avoid copying the kernel unnecessarily Ard Biesheuvel
2020-03-26 16:59 ` [PATCH 2/2] efi/arm64: increase the PE/COFF alignment so the kernel can run in place Ard Biesheuvel
2020-03-28 14:06   ` Arvind Sankar
2020-03-28 14:10     ` Ard Biesheuvel
2020-03-27 13:19 ` [PATCH 0/2] efi/arm64: execute the kernel in place if possible Jonathan Cameron
2020-03-27 16:39   ` Ard Biesheuvel

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