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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-08-31 12:49:10 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-08-31 12:49:10 -0700 |
| commit | 87dfd85c38923acd9517e8df4afc908565df0961 (patch) | |
| tree | 82a4c8a4ded8b96fad2c766350194aed2cf1bd0c /arch/arm/include | |
| parent | 4ad0a4c2343d3981e92df2b39fa262be62a9091a (diff) | |
| parent | 133789d4a458c761f60ef71cc5a6ede5a617ed7e (diff) | |
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- Refactor VFP code and convert to C code (Ard Biesheuvel)
- Fix hardware breakpoint single-stepping using bpf_overflow_handler
- Make SMP stop calls asynchronous allowing panic from irq context to
work
- Fix for kernel-doc warnings for locomo
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
Revert part of ae1f8d793a19 ("ARM: 9304/1: add prototype for function called only from asm")
ARM: 9318/1: locomo: move kernel-doc to prevent warnings
ARM: 9317/1: kexec: Make smp stop calls asynchronous
ARM: 9316/1: hw_breakpoint: fix single-stepping when using bpf_overflow_handler
ARM: entry: Make asm coproc dispatch code NWFPE only
ARM: iwmmxt: Use undef hook to enable coprocessor for task
ARM: entry: Disregard Thumb undef exception in coproc dispatch
ARM: vfp: Use undef hook for handling VFP exceptions
ARM: kernel: Get rid of thread_info::used_cp[] array
ARM: vfp: Reimplement VFP exception entry in C code
ARM: vfp: Remove workaround for Feroceon CPUs
ARM: vfp: Record VFP bounces as perf emulation faults
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/thread_info.h | 17 | ||||
| -rw-r--r-- | arch/arm/include/asm/vfp.h | 1 |
2 files changed, 16 insertions, 2 deletions
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h index 7f092cb55a41..943ffcf069d2 100644 --- a/arch/arm/include/asm/thread_info.h +++ b/arch/arm/include/asm/thread_info.h @@ -40,6 +40,7 @@ struct task_struct; DECLARE_PER_CPU(struct task_struct *, __entry_task); #include <asm/types.h> +#include <asm/traps.h> struct cpu_context_save { __u32 r4; @@ -66,7 +67,6 @@ struct thread_info { __u32 cpu_domain; /* cpu domain */ struct cpu_context_save cpu_context; /* cpu context */ __u32 abi_syscall; /* ABI type and syscall nr */ - __u8 used_cp[16]; /* thread used copro */ unsigned long tp_value[2]; /* TLS registers */ union fp_state fpstate __attribute__((aligned(8))); union vfp_state vfpstate; @@ -105,6 +105,21 @@ extern void iwmmxt_task_restore(struct thread_info *, void *); extern void iwmmxt_task_release(struct thread_info *); extern void iwmmxt_task_switch(struct thread_info *); +extern int iwmmxt_undef_handler(struct pt_regs *, u32); + +static inline void register_iwmmxt_undef_handler(void) +{ + static struct undef_hook iwmmxt_undef_hook = { + .instr_mask = 0x0c000e00, + .instr_val = 0x0c000000, + .cpsr_mask = MODE_MASK | PSR_T_BIT, + .cpsr_val = USR_MODE, + .fn = iwmmxt_undef_handler, + }; + + register_undef_hook(&iwmmxt_undef_hook); +} + extern void vfp_sync_hwstate(struct thread_info *); extern void vfp_flush_hwstate(struct thread_info *); diff --git a/arch/arm/include/asm/vfp.h b/arch/arm/include/asm/vfp.h index 5b57b8768bac..157ea3426158 100644 --- a/arch/arm/include/asm/vfp.h +++ b/arch/arm/include/asm/vfp.h @@ -102,7 +102,6 @@ #ifndef __ASSEMBLY__ void vfp_disable(void); -void VFP_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs); #endif #endif /* __ASM_VFP_H */ |