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| author | Quentin Perret <qperret@google.com> | 2021-03-19 10:01:22 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-03-19 12:01:20 +0000 |
| commit | d460df12926825a3926da91f054f9f11f88bb33e (patch) | |
| tree | f294c849c7ae83bc35fb2fca671e281cc65bd8d4 /arch/arm64/kvm/hyp/nvhe/cache.S | |
| parent | 7a440cc78392c3caf805ef0afc7ead031e4d0830 (diff) | |
| download | linux-stable-d460df12926825a3926da91f054f9f11f88bb33e.tar.gz linux-stable-d460df12926825a3926da91f054f9f11f88bb33e.tar.bz2 linux-stable-d460df12926825a3926da91f054f9f11f88bb33e.zip | |
KVM: arm64: Provide __flush_dcache_area at EL2
We will need to do cache maintenance at EL2 soon, so compile a copy of
__flush_dcache_area at EL2, and provide a copy of arm64_ftr_reg_ctrel0
as it is needed by the read_ctr macro.
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210319100146.1149909-15-qperret@google.com
Diffstat (limited to 'arch/arm64/kvm/hyp/nvhe/cache.S')
| -rw-r--r-- | arch/arm64/kvm/hyp/nvhe/cache.S | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp/nvhe/cache.S b/arch/arm64/kvm/hyp/nvhe/cache.S new file mode 100644 index 000000000000..36cef6915428 --- /dev/null +++ b/arch/arm64/kvm/hyp/nvhe/cache.S @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Code copied from arch/arm64/mm/cache.S. + */ + +#include <linux/linkage.h> +#include <asm/assembler.h> +#include <asm/alternative.h> + +SYM_FUNC_START_PI(__flush_dcache_area) + dcache_by_line_op civac, sy, x0, x1, x2, x3 + ret +SYM_FUNC_END_PI(__flush_dcache_area) |