| Message ID | 20221111215026.813348-7-broonie@kernel.org (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 2cdeecdb95134cc0abc76626a59c94073cda8a47 |
| Headers | show |
| Series | arm64/sme: Support SME 2 and SME 2.1 | expand |
On 2022/11/12 5:50, Mark Brown wrote: > /* > * Zero the entire ZA array > * ZERO ZA Unrelated to this patch but the zero_za macro doesn't appear to have any in kernel user.
On Sat, Dec 17, 2022 at 05:40:27PM +0800, Zenghui Yu wrote: > On 2022/11/12 5:50, Mark Brown wrote: > > /* > > * Zero the entire ZA array > > * ZERO ZA > Unrelated to this patch but the zero_za macro doesn't appear to have > any in kernel user. Yes, it's not actually needed and could be deleted.
diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h index 5e0910cf4832..cd03819a3b68 100644 --- a/arch/arm64/include/asm/fpsimdmacros.h +++ b/arch/arm64/include/asm/fpsimdmacros.h @@ -220,6 +220,28 @@ | ((\offset) & 7) .endm +/* + * LDR (ZT0) + * + * LDR ZT0, nx + */ +.macro _ldr_zt nx + _check_general_reg \nx + .inst 0xe11f8000 \ + | (\nx << 5) +.endm + +/* + * STR (ZT0) + * + * STR ZT0, nx + */ +.macro _str_zt nx + _check_general_reg \nx + .inst 0xe13f8000 \ + | (\nx << 5) +.endm + /* * Zero the entire ZA array * ZERO ZA
In order to avoid unrealistic toolchain requirements we manually encode the instructions for loading and storing ZT0. Signed-off-by: Mark Brown <broonie@kernel.org> --- arch/arm64/include/asm/fpsimdmacros.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)