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Subject[PATCH v2 04/10] xtensa: clean up excsave1 initialization
Date
Use xtensa_set_sr instead of inline assembly.
Rename local variable exc_table in early_trap_init to avoid conflict
with per-CPU variable of the same name.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
arch/xtensa/include/asm/traps.h | 4 ++--
arch/xtensa/kernel/traps.c | 3 +--
2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/xtensa/include/asm/traps.h b/arch/xtensa/include/asm/traps.h
index bfdb0af61b07..514376eff58c 100644
--- a/arch/xtensa/include/asm/traps.h
+++ b/arch/xtensa/include/asm/traps.h
@@ -57,11 +57,11 @@ void do_unhandled(struct pt_regs *regs);
/* Initialize minimal exc_table structure sufficient for basic paging */
static inline void __init early_trap_init(void)
{
- static struct exc_table exc_table __initdata = {
+ static struct exc_table init_exc_table __initdata = {
.fast_kernel_handler[EXCCAUSE_DTLB_MISS] =
fast_second_level_miss,
};
- __asm__ __volatile__("wsr %0, excsave1\n" : : "a" (&exc_table));
+ xtensa_set_sr(&init_exc_table, excsave1);
}

void secondary_trap_init(void);
diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c
index d6b1a0c3e319..95903f25e523 100644
--- a/arch/xtensa/kernel/traps.c
+++ b/arch/xtensa/kernel/traps.c
@@ -372,8 +372,7 @@ __init trap_set_handler(int cause, xtensa_exception_handler *handler)

static void trap_init_excsave(void)
{
- unsigned long excsave1 = (unsigned long)this_cpu_ptr(&exc_table);
- __asm__ __volatile__("wsr %0, excsave1\n" : : "a" (excsave1));
+ xtensa_set_sr(this_cpu_ptr(&exc_table), excsave1);
}

static void trap_init_debug(void)
--
2.30.2
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