From 4e67526840fc55917581b90f6a4b65849a616dd8 Mon Sep 17 00:00:00 2001 From: Huacai Chen Date: Sun, 9 Nov 2025 16:02:00 +0800 Subject: [PATCH] LoongArch: Use physical addresses for CSR_MERRENTRY/CSR_TLBRENTRY Now we use virtual addresses to fill CSR_MERRENTRY/CSR_TLBRENTRY, but hardware hope physical addresses. Now it works well because the high bits are ignored above PA_BITS (48 bits), but explicitly use physical addresses can avoid potential bugs. So fix it. Cc: stable@vger.kernel.org Signed-off-by: Huacai Chen --- arch/loongarch/kernel/traps.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/loongarch/kernel/traps.c b/arch/loongarch/kernel/traps.c index 3d9be6ca7ec55..da5926fead4af 100644 --- a/arch/loongarch/kernel/traps.c +++ b/arch/loongarch/kernel/traps.c @@ -1131,8 +1131,8 @@ static void configure_exception_vector(void) tlbrentry = (unsigned long)exception_handlers + 80*VECSIZE; csr_write64(eentry, LOONGARCH_CSR_EENTRY); - csr_write64(eentry, LOONGARCH_CSR_MERRENTRY); - csr_write64(tlbrentry, LOONGARCH_CSR_TLBRENTRY); + csr_write64(__pa(eentry), LOONGARCH_CSR_MERRENTRY); + csr_write64(__pa(tlbrentry), LOONGARCH_CSR_TLBRENTRY); } void per_cpu_trap_init(int cpu) -- 2.47.3