Re: [PATCH] powerpc64/hw_breakpoints: Handle data breakpoints in radix mode
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2017-06-16 05:16:16
"Naveen N. Rao" [off-list ref] writes:
quoted hunk ↗ jump to hunk
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index ae418b85c17c..17ee701b8336 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S@@ -1442,7 +1440,9 @@ do_hash_page: /* Here we have a page fault that hash_page can't handle. */ handle_page_fault: -11: ld r4,_DAR(r1) + andis. r0,r4,DSISR_DABRMATCH@h + bne- handle_dabr_fault
This broke hash. Please test hash! :) I added:
@@ -1438,11 +1436,16 @@ do_hash_page: /* Error */ blt- 13f + + /* Reload DSISR into r4 for the DABR check below */ + ld r4,_DSISR(r1) #endif /* CONFIG_PPC_STD_MMU_64 */ /* Here we have a page fault that hash_page can't handle. */ handle_page_fault:
cheers