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| author | Max Filippov <jcmvbkbc@gmail.com> | 2018-11-15 18:17:41 -0800 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2018-12-03 01:39:22 -0800 |
| commit | 8ed3a5426b4245ae22e01f8a65573b8fd5854004 (patch) | |
| tree | 3e8126f3263d5313eb9975ce70ed7a102f91f5e4 | |
| parent | 5eacadb5e66b2b100695777ee7d68d8a2d9bd25c (diff) | |
| download | linux-stable-8ed3a5426b4245ae22e01f8a65573b8fd5854004.tar.gz linux-stable-8ed3a5426b4245ae22e01f8a65573b8fd5854004.tar.bz2 linux-stable-8ed3a5426b4245ae22e01f8a65573b8fd5854004.zip | |
xtensa: drop fast_syscall_kernel
There must be no xtensa-specific syscalls from the kernel code: register
spilling uses call+entry sequence and atomics have proper function
implementations. Drop fast_syscall_xtensa.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| -rw-r--r-- | arch/xtensa/kernel/entry.S | 19 | ||||
| -rw-r--r-- | arch/xtensa/kernel/traps.c | 2 |
2 files changed, 0 insertions, 21 deletions
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index b0007567e497..48d36b4d27b8 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -1022,25 +1022,6 @@ ENDPROC(fast_alloca) * excsave_1: dispatch table */ -ENTRY(fast_syscall_kernel) - - /* Skip syscall. */ - - rsr a0, epc1 - addi a0, a0, 3 - wsr a0, epc1 - - l32i a0, a2, PT_DEPC - bgeui a0, VALID_DOUBLE_EXCEPTION_ADDRESS, fast_syscall_unrecoverable - - rsr a0, depc # get syscall-nr - _beqz a0, fast_syscall_spill_registers - _beqi a0, __NR_xtensa, fast_syscall_xtensa - - j kernel_exception - -ENDPROC(fast_syscall_kernel) - ENTRY(fast_syscall_user) /* Skip syscall. */ diff --git a/arch/xtensa/kernel/traps.c b/arch/xtensa/kernel/traps.c index 86507fa7c2d7..238399e22cdc 100644 --- a/arch/xtensa/kernel/traps.c +++ b/arch/xtensa/kernel/traps.c @@ -51,7 +51,6 @@ extern void kernel_exception(void); extern void user_exception(void); -extern void fast_syscall_kernel(void); extern void fast_syscall_user(void); extern void fast_alloca(void); extern void fast_unaligned(void); @@ -89,7 +88,6 @@ typedef struct { static dispatch_init_table_t __initdata dispatch_init_table[] = { { EXCCAUSE_ILLEGAL_INSTRUCTION, 0, do_illegal_instruction}, -{ EXCCAUSE_SYSTEM_CALL, KRNL, fast_syscall_kernel }, { EXCCAUSE_SYSTEM_CALL, USER, fast_syscall_user }, { EXCCAUSE_SYSTEM_CALL, 0, system_call }, /* EXCCAUSE_INSTRUCTION_FETCH unhandled */ |