diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/generic/patches-4.9/304-mips_disable_fpu.patch | 51 |
1 files changed, 42 insertions, 9 deletions
diff --git a/target/linux/generic/patches-4.9/304-mips_disable_fpu.patch b/target/linux/generic/patches-4.9/304-mips_disable_fpu.patch index 2ab99eb3cb..b46ae878f3 100644 --- a/target/linux/generic/patches-4.9/304-mips_disable_fpu.patch +++ b/target/linux/generic/patches-4.9/304-mips_disable_fpu.patch @@ -26,7 +26,7 @@ v2: incorporated changes suggested by Jonas Gorski --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig -@@ -2891,6 +2891,20 @@ config MIPS_O32_FP64_SUPPORT +@@ -2891,6 +2891,20 @@ If unsure, say N. @@ -49,7 +49,7 @@ v2: incorporated changes suggested by Jonas Gorski select OF --- a/arch/mips/Makefile +++ b/arch/mips/Makefile -@@ -287,7 +287,7 @@ OBJCOPYFLAGS += --remove-section=.regin +@@ -287,7 +287,7 @@ head-y := arch/mips/kernel/head.o libs-y += arch/mips/lib/ @@ -60,7 +60,7 @@ v2: incorporated changes suggested by Jonas Gorski core-y += arch/mips/ --- a/arch/mips/include/asm/fpu.h +++ b/arch/mips/include/asm/fpu.h -@@ -227,8 +227,10 @@ static inline int init_fpu(void) +@@ -227,8 +227,10 @@ /* Restore FRE */ write_c0_config5(config5); enable_fpu_hazard(); @@ -82,16 +82,11 @@ v2: incorporated changes suggested by Jonas Gorski #ifdef CONFIG_DEBUG_FS struct mips_fpu_emulator_stats { -@@ -63,6 +64,21 @@ do { \ +@@ -63,6 +64,16 @@ extern int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx, int has_fpu, void *__user *fault_addr); +#else /* no CONFIG_MIPS_FPU_EMULATOR */ -+static inline int do_dsemulret(struct pt_regs *xcp) -+{ -+ return 0; /* 0 means error, should never get here anyway */ -+} -+ +static inline int fpu_emulator_cop1Handler(struct pt_regs *xcp, + struct mips_fpu_struct *ctx, int has_fpu, + void *__user *fault_addr) @@ -104,3 +99,41 @@ v2: incorporated changes suggested by Jonas Gorski void force_fcr31_sig(unsigned long fcr31, void __user *fault_addr, struct task_struct *tsk); int process_fpemu_return(int sig, void __user *fault_addr, +--- a/arch/mips/include/asm/dsemul.h ++++ b/arch/mips/include/asm/dsemul.h +@@ -41,6 +41,7 @@ + extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir, + unsigned long branch_pc, unsigned long cont_pc); + ++#ifdef CONFIG_MIPS_FPU_EMULATOR + /** + * do_dsemulret() - Return from a delay slot 'emulation' frame + * @xcp: User thread register context. +@@ -88,5 +89,27 @@ + * before @mm is freed in order to avoid memory leaks. + */ + extern void dsemul_mm_cleanup(struct mm_struct *mm); ++#else ++static inline bool do_dsemulret(struct pt_regs *xcp) ++{ ++ return false; ++} ++ ++static inline bool dsemul_thread_cleanup(struct task_struct *tsk) ++{ ++ return false; ++} ++ ++static inline bool dsemul_thread_rollback(struct pt_regs *regs) ++{ ++ return false; ++} ++ ++static inline void dsemul_mm_cleanup(struct mm_struct *mm) ++{ ++ ++} ++ ++#endif + + #endif /* __MIPS_ASM_DSEMUL_H__ */ |