linux-kernel - [PATCHv3 0/3] clean up KPTI / SDEI trampoline data alignment

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Message-ID: <1938400.7m7sAWtiY1@basile.remlab.net>
Date:   Thu, 19 Mar 2020 11:12:56 +0200
From:   Rémi Denis-Courmont <remi@...lab.net>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Cc:     Mark Rutland <mark.rutland@....com>,
        James Morse <james.morse@....com>, linux-kernel@...r.kernel.org
Subject: [PATCHv3 0/3] clean up KPTI / SDEI trampoline data alignment

	Hi,

The KPTI and SDE trampolines each load a pointer from the same fixmap data
page. This reduces the data alignment to the useful value, and tries to
clarify the assembler code.

Changes since v2:
- Retain alignment even when SDEI is disabled to keep ld happy.

----------------------------------------------------------------
Rémi Denis-Courmont (3):
      arm64: clean up trampoline vector loads
      arm64/sdei: gather trampolines' .rodata
      arm64: reduce trampoline data alignment

 arch/arm64/kernel/entry.S | 23 ++++++++++-------------
 arch/arm64/mm/mmu.c       |  5 ++---
 2 files changed, 12 insertions(+), 16 deletions(-)

-- 
Реми Дёни-Курмон
http://www.remlab.net/