Revision - 322f8b8 - x86/smpboot: Remove stale TLB flush invocations - origin: https://github.com/torvalds/linux

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17 May 2024, 11:00:25 UTC

Revision 322f8b8b340c824aef891342b0f5795d15e11562 authored by Thomas Gleixner on 30 December 2017, 21:13:53 UTC, committed by Ingo Molnar on 31 December 2017, 11:12:51 UTC

x86/smpboot: Remove stale TLB flush invocations

smpboot_setup_warm_reset_vector() and smpboot_restore_warm_reset_vector()
invoke local_flush_tlb() for no obvious reason.

Digging in history revealed that the original code in the 2.1 era added
those because the code manipulated a swapper_pg_dir pagetable entry. The
pagetable manipulation was removed long ago in the 2.3 timeframe, but the
TLB flush invocations stayed around forever.

Remove them along with the pointless pr_debug()s which come from the same 2.1
change.

Reported-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20171230211829.586548655@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 parent 9f5cb6b

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Tip revision: 322f8b8b340c824aef891342b0f5795d15e11562 authored by Thomas Gleixner on 30 December 2017, 21:13:53 UTC
x86/smpboot: Remove stale TLB flush invocations

Tip revision: 322f8b8

File	Mode	Size
Documentation
arch
block
certs
crypto
drivers
firmware
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.cocciconfig	-rw-r--r--	59 bytes
.get_maintainer.ignore	-rw-r--r--	31 bytes
.gitattributes	-rw-r--r--	30 bytes
.gitignore	-rw-r--r--	1.3 KB
.mailmap	-rw-r--r--	8.7 KB
COPYING	-rw-r--r--	18.3 KB
CREDITS	-rw-r--r--	96.2 KB
Kbuild	-rw-r--r--	2.2 KB
Kconfig	-rw-r--r--	287 bytes
MAINTAINERS	-rw-r--r--	420.4 KB
Makefile	-rw-r--r--	58.4 KB
README	-rw-r--r--	722 bytes

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x86/smpboot: Remove stale TLB flush invocations

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