diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/050-v5.16-01-mips-uasm-Add-workaround-for-Loongson-2F-nop-CPU-err.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/050-v5.16-01-mips-uasm-Add-workaround-for-Loongson-2F-nop-CPU-err.patch | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/target/linux/generic/backport-5.10/050-v5.16-01-mips-uasm-Add-workaround-for-Loongson-2F-nop-CPU-err.patch b/target/linux/generic/backport-5.10/050-v5.16-01-mips-uasm-Add-workaround-for-Loongson-2F-nop-CPU-err.patch deleted file mode 100644 index 3a4d573f80..0000000000 --- a/target/linux/generic/backport-5.10/050-v5.16-01-mips-uasm-Add-workaround-for-Loongson-2F-nop-CPU-err.patch +++ /dev/null @@ -1,31 +0,0 @@ -From: Johan Almbladh <johan.almbladh@anyfinetworks.com> -Date: Tue, 5 Oct 2021 18:54:03 +0200 -Subject: [PATCH] mips: uasm: Add workaround for Loongson-2F nop CPU errata - -This patch implements a workaround for the Loongson-2F nop in generated, -code, if the existing option CONFIG_CPU_NOP_WORKAROUND is set. Before, -the binutils option -mfix-loongson2f-nop was enabled, but no workaround -was done when emitting MIPS code. Now, the nop pseudo instruction is -emitted as "or ax,ax,zero" instead of the default "sll zero,zero,0". This -is consistent with the workaround implemented by binutils. - -Link: https://sourceware.org/legacy-ml/binutils/2009-11/msg00387.html - -Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com> -Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> ---- - ---- a/arch/mips/include/asm/uasm.h -+++ b/arch/mips/include/asm/uasm.h -@@ -249,7 +249,11 @@ static inline void uasm_l##lb(struct uas - #define uasm_i_bnezl(buf, rs, off) uasm_i_bnel(buf, rs, 0, off) - #define uasm_i_ehb(buf) uasm_i_sll(buf, 0, 0, 3) - #define uasm_i_move(buf, a, b) UASM_i_ADDU(buf, a, 0, b) -+#ifdef CONFIG_CPU_NOP_WORKAROUNDS -+#define uasm_i_nop(buf) uasm_i_or(buf, 1, 1, 0) -+#else - #define uasm_i_nop(buf) uasm_i_sll(buf, 0, 0, 0) -+#endif - #define uasm_i_ssnop(buf) uasm_i_sll(buf, 0, 0, 1) - - static inline void uasm_i_drotr_safe(u32 **p, unsigned int a1, |