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| author | Max Filippov <jcmvbkbc@gmail.com> | 2022-03-19 13:58:21 +0100 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2022-03-19 21:08:32 +0100 |
| commit | e6d423aaaea13e6dc48e42472aeebc8607ae2574 (patch) | |
| tree | 63b922f9e580feb54d872de4a565cc501be68aeb | |
| parent | xtensa: merge stack alignment definitions (diff) | |
| download | linux-e6d423aaaea13e6dc48e42472aeebc8607ae2574.tar.xz linux-e6d423aaaea13e6dc48e42472aeebc8607ae2574.zip | |
xtensa: rearrange NMI exit path
NMI exit path to userspace should neither check TIF_DB_DISABLED nor call
check_tlb_sanity because NMI shouldn't touch anything related to
userspace. Drop kernel/userspace check in NMI exit path.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| -rw-r--r-- | arch/xtensa/kernel/entry.S | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index 77a7c8da3ff5..8d671898d582 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -488,9 +488,10 @@ KABI_W or a3, a3, a2 common_exception_return: #if XTENSA_FAKE_NMI - l32i a2, a1, PT_EXCCAUSE - movi a3, EXCCAUSE_MAPPED_NMI - beq a2, a3, .LNMIexit + l32i abi_tmp0, a1, PT_EXCCAUSE + movi abi_tmp1, EXCCAUSE_MAPPED_NMI + l32i abi_saved1, a1, PT_PS + beq abi_tmp0, abi_tmp1, 4f #endif 1: irq_save a2, a3 @@ -550,12 +551,6 @@ common_exception_return: j 4f #endif -#if XTENSA_FAKE_NMI -.LNMIexit: - l32i abi_saved1, a1, PT_PS - _bbci.l abi_saved1, PS_UM_BIT, 4f -#endif - 5: #ifdef CONFIG_HAVE_HW_BREAKPOINT _bbci.l a4, TIF_DB_DISABLED, 7f |