summaryrefslogtreecommitdiffstats
path: root/arch/loongarch/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/loongarch/kernel')
-rw-r--r--arch/loongarch/kernel/Makefile8
-rw-r--r--arch/loongarch/kernel/fpu.S6
-rw-r--r--arch/loongarch/kernel/lbt.S4
-rw-r--r--arch/loongarch/kernel/signal.c21
-rw-r--r--arch/loongarch/kernel/traps.c20
5 files changed, 26 insertions, 33 deletions
diff --git a/arch/loongarch/kernel/Makefile b/arch/loongarch/kernel/Makefile
index 4853e8b04c6f..f9dcaa60033d 100644
--- a/arch/loongarch/kernel/Makefile
+++ b/arch/loongarch/kernel/Makefile
@@ -21,10 +21,10 @@ obj-$(CONFIG_CPU_HAS_LBT) += lbt.o
obj-$(CONFIG_ARCH_STRICT_ALIGN) += unaligned.o
-CFLAGS_module.o += $(call cc-option,-Wno-override-init,)
-CFLAGS_syscall.o += $(call cc-option,-Wno-override-init,)
-CFLAGS_traps.o += $(call cc-option,-Wno-override-init,)
-CFLAGS_perf_event.o += $(call cc-option,-Wno-override-init,)
+CFLAGS_module.o += $(call cc-disable-warning, override-init)
+CFLAGS_syscall.o += $(call cc-disable-warning, override-init)
+CFLAGS_traps.o += $(call cc-disable-warning, override-init)
+CFLAGS_perf_event.o += $(call cc-disable-warning, override-init)
ifdef CONFIG_FUNCTION_TRACER
ifndef CONFIG_DYNAMIC_FTRACE
diff --git a/arch/loongarch/kernel/fpu.S b/arch/loongarch/kernel/fpu.S
index 6ab640101457..28caf416ae36 100644
--- a/arch/loongarch/kernel/fpu.S
+++ b/arch/loongarch/kernel/fpu.S
@@ -458,6 +458,7 @@ SYM_FUNC_START(_save_fp_context)
li.w a0, 0 # success
jr ra
SYM_FUNC_END(_save_fp_context)
+EXPORT_SYMBOL_GPL(_save_fp_context)
/*
* a0: fpregs
@@ -471,6 +472,7 @@ SYM_FUNC_START(_restore_fp_context)
li.w a0, 0 # success
jr ra
SYM_FUNC_END(_restore_fp_context)
+EXPORT_SYMBOL_GPL(_restore_fp_context)
/*
* a0: fpregs
@@ -484,6 +486,7 @@ SYM_FUNC_START(_save_lsx_context)
li.w a0, 0 # success
jr ra
SYM_FUNC_END(_save_lsx_context)
+EXPORT_SYMBOL_GPL(_save_lsx_context)
/*
* a0: fpregs
@@ -497,6 +500,7 @@ SYM_FUNC_START(_restore_lsx_context)
li.w a0, 0 # success
jr ra
SYM_FUNC_END(_restore_lsx_context)
+EXPORT_SYMBOL_GPL(_restore_lsx_context)
/*
* a0: fpregs
@@ -510,6 +514,7 @@ SYM_FUNC_START(_save_lasx_context)
li.w a0, 0 # success
jr ra
SYM_FUNC_END(_save_lasx_context)
+EXPORT_SYMBOL_GPL(_save_lasx_context)
/*
* a0: fpregs
@@ -523,6 +528,7 @@ SYM_FUNC_START(_restore_lasx_context)
li.w a0, 0 # success
jr ra
SYM_FUNC_END(_restore_lasx_context)
+EXPORT_SYMBOL_GPL(_restore_lasx_context)
.L_fpu_fault:
li.w a0, -EFAULT # failure
diff --git a/arch/loongarch/kernel/lbt.S b/arch/loongarch/kernel/lbt.S
index 001f061d226a..71678912d24c 100644
--- a/arch/loongarch/kernel/lbt.S
+++ b/arch/loongarch/kernel/lbt.S
@@ -90,6 +90,7 @@ SYM_FUNC_START(_save_lbt_context)
li.w a0, 0 # success
jr ra
SYM_FUNC_END(_save_lbt_context)
+EXPORT_SYMBOL_GPL(_save_lbt_context)
/*
* a0: scr
@@ -110,6 +111,7 @@ SYM_FUNC_START(_restore_lbt_context)
li.w a0, 0 # success
jr ra
SYM_FUNC_END(_restore_lbt_context)
+EXPORT_SYMBOL_GPL(_restore_lbt_context)
/*
* a0: ftop
@@ -120,6 +122,7 @@ SYM_FUNC_START(_save_ftop_context)
li.w a0, 0 # success
jr ra
SYM_FUNC_END(_save_ftop_context)
+EXPORT_SYMBOL_GPL(_save_ftop_context)
/*
* a0: ftop
@@ -150,6 +153,7 @@ SYM_FUNC_START(_restore_ftop_context)
li.w a0, 0 # success
jr ra
SYM_FUNC_END(_restore_ftop_context)
+EXPORT_SYMBOL_GPL(_restore_ftop_context)
.L_lbt_fault:
li.w a0, -EFAULT # failure
diff --git a/arch/loongarch/kernel/signal.c b/arch/loongarch/kernel/signal.c
index 7a555b600171..4740cb5b2388 100644
--- a/arch/loongarch/kernel/signal.c
+++ b/arch/loongarch/kernel/signal.c
@@ -51,27 +51,6 @@
#define lock_lbt_owner() ({ preempt_disable(); pagefault_disable(); })
#define unlock_lbt_owner() ({ pagefault_enable(); preempt_enable(); })
-/* Assembly functions to move context to/from the FPU */
-extern asmlinkage int
-_save_fp_context(void __user *fpregs, void __user *fcc, void __user *csr);
-extern asmlinkage int
-_restore_fp_context(void __user *fpregs, void __user *fcc, void __user *csr);
-extern asmlinkage int
-_save_lsx_context(void __user *fpregs, void __user *fcc, void __user *fcsr);
-extern asmlinkage int
-_restore_lsx_context(void __user *fpregs, void __user *fcc, void __user *fcsr);
-extern asmlinkage int
-_save_lasx_context(void __user *fpregs, void __user *fcc, void __user *fcsr);
-extern asmlinkage int
-_restore_lasx_context(void __user *fpregs, void __user *fcc, void __user *fcsr);
-
-#ifdef CONFIG_CPU_HAS_LBT
-extern asmlinkage int _save_lbt_context(void __user *regs, void __user *eflags);
-extern asmlinkage int _restore_lbt_context(void __user *regs, void __user *eflags);
-extern asmlinkage int _save_ftop_context(void __user *ftop);
-extern asmlinkage int _restore_ftop_context(void __user *ftop);
-#endif
-
struct rt_sigframe {
struct siginfo rs_info;
struct ucontext rs_uctx;
diff --git a/arch/loongarch/kernel/traps.c b/arch/loongarch/kernel/traps.c
index 2ec3106c0da3..47fc2de6d150 100644
--- a/arch/loongarch/kernel/traps.c
+++ b/arch/loongarch/kernel/traps.c
@@ -553,9 +553,10 @@ asmlinkage void noinstr do_ale(struct pt_regs *regs)
die_if_kernel("Kernel ale access", regs);
force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *)regs->csr_badvaddr);
#else
+ bool pie = regs_irqs_disabled(regs);
unsigned int *pc;
- if (regs->csr_prmd & CSR_PRMD_PIE)
+ if (!pie)
local_irq_enable();
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, regs, regs->csr_badvaddr);
@@ -582,7 +583,7 @@ sigbus:
die_if_kernel("Kernel ale access", regs);
force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *)regs->csr_badvaddr);
out:
- if (regs->csr_prmd & CSR_PRMD_PIE)
+ if (!pie)
local_irq_disable();
#endif
irqentry_exit(regs, state);
@@ -621,12 +622,13 @@ static void bug_handler(struct pt_regs *regs)
asmlinkage void noinstr do_bce(struct pt_regs *regs)
{
bool user = user_mode(regs);
+ bool pie = regs_irqs_disabled(regs);
unsigned long era = exception_era(regs);
u64 badv = 0, lower = 0, upper = ULONG_MAX;
union loongarch_instruction insn;
irqentry_state_t state = irqentry_enter(regs);
- if (regs->csr_prmd & CSR_PRMD_PIE)
+ if (!pie)
local_irq_enable();
current->thread.trap_nr = read_csr_excode();
@@ -692,7 +694,7 @@ asmlinkage void noinstr do_bce(struct pt_regs *regs)
force_sig_bnderr((void __user *)badv, (void __user *)lower, (void __user *)upper);
out:
- if (regs->csr_prmd & CSR_PRMD_PIE)
+ if (!pie)
local_irq_disable();
irqentry_exit(regs, state);
@@ -710,11 +712,12 @@ bad_era:
asmlinkage void noinstr do_bp(struct pt_regs *regs)
{
bool user = user_mode(regs);
+ bool pie = regs_irqs_disabled(regs);
unsigned int opcode, bcode;
unsigned long era = exception_era(regs);
irqentry_state_t state = irqentry_enter(regs);
- if (regs->csr_prmd & CSR_PRMD_PIE)
+ if (!pie)
local_irq_enable();
if (__get_inst(&opcode, (u32 *)era, user))
@@ -780,7 +783,7 @@ asmlinkage void noinstr do_bp(struct pt_regs *regs)
}
out:
- if (regs->csr_prmd & CSR_PRMD_PIE)
+ if (!pie)
local_irq_disable();
irqentry_exit(regs, state);
@@ -1015,6 +1018,7 @@ static void init_restore_lbt(void)
asmlinkage void noinstr do_lbt(struct pt_regs *regs)
{
+ bool pie = regs_irqs_disabled(regs);
irqentry_state_t state = irqentry_enter(regs);
/*
@@ -1024,7 +1028,7 @@ asmlinkage void noinstr do_lbt(struct pt_regs *regs)
* (including the user using 'MOVGR2GCSR' to turn on TM, which
* will not trigger the BTE), we need to check PRMD first.
*/
- if (regs->csr_prmd & CSR_PRMD_PIE)
+ if (!pie)
local_irq_enable();
if (!cpu_has_lbt) {
@@ -1038,7 +1042,7 @@ asmlinkage void noinstr do_lbt(struct pt_regs *regs)
preempt_enable();
out:
- if (regs->csr_prmd & CSR_PRMD_PIE)
+ if (!pie)
local_irq_disable();
irqentry_exit(regs, state);
generated by cgit v1.2.3 (git 2.46.0) at 2025-04-27 21:50:00 +0000