Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h
index 636e9d9..af43367 100644
--- a/arch/arm64/include/asm/fpsimdmacros.h
+++ b/arch/arm64/include/asm/fpsimdmacros.h
@@ -164,25 +164,59 @@
| ((\np) << 5)
.endm
+/* PFALSE P\np.B */
+.macro _sve_pfalse np
+ _sve_check_preg \np
+ .inst 0x2518e400 \
+ | (\np)
+.endm
+
.macro __for from:req, to:req
.if (\from) == (\to)
- _for__body \from
+ _for__body %\from
.else
- __for \from, (\from) + ((\to) - (\from)) / 2
- __for (\from) + ((\to) - (\from)) / 2 + 1, \to
+ __for %\from, %((\from) + ((\to) - (\from)) / 2)
+ __for %((\from) + ((\to) - (\from)) / 2 + 1), %\to
.endif
.endm
.macro _for var:req, from:req, to:req, insn:vararg
.macro _for__body \var:req
+ .noaltmacro
\insn
+ .altmacro
.endm
+ .altmacro
__for \from, \to
+ .noaltmacro
.purgem _for__body
.endm
+/* Update ZCR_EL1.LEN with the new VQ */
+.macro sve_load_vq xvqminus1, xtmp, xtmp2
+ mrs_s \xtmp, SYS_ZCR_EL1
+ bic \xtmp2, \xtmp, ZCR_ELx_LEN_MASK
+ orr \xtmp2, \xtmp2, \xvqminus1
+ cmp \xtmp2, \xtmp
+ b.eq 921f
+ msr_s SYS_ZCR_EL1, \xtmp2 //self-synchronising
+921:
+.endm
+
+/* Preserve the first 128-bits of Znz and zero the rest. */
+.macro _sve_flush_z nz
+ _sve_check_zreg \nz
+ mov v\nz\().16b, v\nz\().16b
+.endm
+
+.macro sve_flush
+ _for n, 0, 31, _sve_flush_z \n
+ _for n, 0, 15, _sve_pfalse \n
+ _sve_wrffr 0
+.endm
+
.macro sve_save nxbase, xpfpsr, nxtmp
_for n, 0, 31, _sve_str_v \n, \nxbase, \n - 34
_for n, 0, 15, _sve_str_p \n, \nxbase, \n - 16
@@ -197,13 +231,7 @@
.endm
.macro sve_load nxbase, xpfpsr, xvqminus1, nxtmp, xtmp2
- mrs_s x\nxtmp, SYS_ZCR_EL1
- bic \xtmp2, x\nxtmp, ZCR_ELx_LEN_MASK
- orr \xtmp2, \xtmp2, \xvqminus1
- cmp \xtmp2, x\nxtmp
- b.eq 921f
- msr_s SYS_ZCR_EL1, \xtmp2 // self-synchronising
-921:
+ sve_load_vq \xvqminus1, x\nxtmp, \xtmp2
_for n, 0, 31, _sve_ldr_v \n, \nxbase, \n - 34
_sve_ldr_p 0, \nxbase
_sve_wrffr 0