Move local_flush_tlb_all() earlier (just after setup_ptwalker() and
before page allocation). This can avoid stale TLB entries misguiding
the later page allocation. Without this patch the second kernel of
kexec/kdump fails to boot SMP.
BTW, move output_pgtable_bits_defines() into tlb_init() since it has
nothing to do with tlb handler setup.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
---
arch/loongarch/mm/tlb.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/loongarch/mm/tlb.c b/arch/loongarch/mm/tlb.c
index 9818ce11546b..da3681f131c8 100644
--- a/arch/loongarch/mm/tlb.c
+++ b/arch/loongarch/mm/tlb.c
@@ -258,7 +258,7 @@ extern long exception_handlers[VECSIZE * 128 / sizeof(long)];
void setup_tlb_handler(int cpu)
{
setup_ptwalker();
- output_pgtable_bits_defines();
+ local_flush_tlb_all();
/* The tlb handlers are generated only once */
if (cpu == 0) {
@@ -301,6 +301,7 @@ void tlb_init(int cpu)
write_csr_pagesize(PS_DEFAULT_SIZE);
write_csr_stlbpgsize(PS_DEFAULT_SIZE);
write_csr_tlbrefill_pagesize(PS_DEFAULT_SIZE);
+
setup_tlb_handler(cpu);
- local_flush_tlb_all();
+ output_pgtable_bits_defines();
}
--
2.31.1