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| author | Pasha Tatashin <pasha.tatashin@soleen.com> | 2021-09-30 14:31:04 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-10-01 13:31:00 +0100 |
| commit | 3036ec599332cdfb406249270e50ad3f1a5c5940 (patch) | |
| tree | 1fed9bae0d590904516632e870a445e4fe5e6018 /arch/arm64/kernel/machine_kexec.c | |
| parent | 5bb6834fc2900052a377df79b9ab065a698bf70b (diff) | |
| download | linux-3036ec599332cdfb406249270e50ad3f1a5c5940.tar.gz linux-3036ec599332cdfb406249270e50ad3f1a5c5940.tar.bz2 linux-3036ec599332cdfb406249270e50ad3f1a5c5940.zip | |
arm64: kexec: Use dcache ops macros instead of open-coding
kexec does dcache maintenance when it re-writes all memory. Our
dcache_by_line_op macro depends on reading the sanitized DminLine
from memory. Kexec may have overwritten this, so open-codes the
sequence.
dcache_by_line_op is a whole set of macros, it uses dcache_line_size
which uses read_ctr for the sanitsed DminLine. Reading the DminLine
is the first thing the dcache_by_line_op does.
Rename dcache_by_line_op dcache_by_myline_op and take DminLine as
an argument. Kexec can now use the slightly smaller macro.
This makes up-coming changes to the dcache maintenance easier on
the eye.
Code generated by the existing callers is unchanged.
Suggested-by: James Morse <james.morse@arm.com>
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210930143113.1502553-7-pasha.tatashin@soleen.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/machine_kexec.c')
0 files changed, 0 insertions, 0 deletions