diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2013-07-09 15:16:06 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-09 12:24:26 -0800 |
| commit | 5fb08df3dd1f7b8e83936808b042725a8b067562 (patch) | |
| tree | f5a0d8bdc17c08384792c66a7584b5e6584bfdf6 /arch/arm64/include/asm/thread_info.h | |
| parent | 81ca15a3e04961b54d4a0b395e681bffb6cfbc68 (diff) | |
arm64: virt: ensure visibility of __boot_cpu_mode
commit 82b2f495fba338d1e3098dde1df54944a9c19751 upstream.
Secondary CPUs write to __boot_cpu_mode with caches disabled, and thus a
cached value of __boot_cpu_mode may be incoherent with that in memory.
This could lead to a failure to detect mismatched boot modes.
This patch adds flushing to ensure that writes by secondaries to
__boot_cpu_mode are made visible before we test against it.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Christoffer Dall <cdall@cs.columbia.edu>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/include/asm/thread_info.h')
0 files changed, 0 insertions, 0 deletions