mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-26 03:15:37 +07:00
e4acfbc18f
When Loongson3 LL/SC errata workarounds are enabled (ie.
CONFIG_CPU_LOONGSON3_WORKAROUNDS=y) run a tool to scan through the
compiled kernel & ensure that the workaround is applied correctly. That
is, ensure that:
- Every LL or LLD instruction is preceded by a sync instruction.
- Any branches from within an LL/SC loop to outside of that loop
target a sync instruction.
Reasoning for these conditions can be found by reading the comment above
the definition of __SYNC_loongson3_war in arch/mips/include/asm/sync.h.
This tool will help ensure that we don't inadvertently introduce code
paths that miss the required workarounds.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: linux-kernel@vger.kernel.org
11 lines
266 B
Makefile
11 lines
266 B
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
hostprogs-y := elf-entry
|
|
PHONY += elf-entry
|
|
elf-entry: $(obj)/elf-entry
|
|
@:
|
|
|
|
hostprogs-$(CONFIG_CPU_LOONGSON3_WORKAROUNDS) += loongson3-llsc-check
|
|
PHONY += loongson3-llsc-check
|
|
loongson3-llsc-check: $(obj)/loongson3-llsc-check
|
|
@:
|