lkml.org 
[lkml]   [2016]   [Feb]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] ACPI, x86/efi: Remove ACPI BGRT tables for kexec
Date
Based on Dave's report that the BGRT image regions are being accessed
on kexec reboot (which by that time contain garbage),

https://lkml.kernel.org/r/20160127112044.GA2961@dhcp-128-65.nay.redhat.com

the following patches simply delete the table when doing a kexec boot.

This is part of a wider compaign to stop kexec-specific code from
leaking into all parts of arch/x86. Instead of sprinkling "if
(efi_setup)", kexec should be shaping the platform information to more
accurately describe which features are still available, so that
existing drivers work transparently without kexec quirks.

Matt Fleming (2):
ACPICA: Tables: Add function to remove ACPI tables
x86/efi: Delete ACPI BGRT when booting via kexec

arch/x86/include/asm/efi.h | 1 +
arch/x86/kernel/setup.c | 4 +++-
arch/x86/platform/efi/efi.c | 38 ++++++++++++++++++++++++++++++
drivers/acpi/acpica/tbxface.c | 54 +++++++++++++++++++++++++++++++++++++++++++
include/acpi/acpixf.h | 3 +++
5 files changed, 99 insertions(+), 1 deletion(-)

--
2.6.2

\
 
 \ /
  Last update: 2016-02-17 17:01    [W:0.169 / U:0.240 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site