Power10 has removed 512 bytes boundary from match criteria. i.e. The match
range can be 512 bytes unaligned as well.
Signed-off-by: Ravi Bangoria <ravi.bango...@linux.ibm.com>
---
arch/powerpc/kernel/hw_breakpoint.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/hw_breakpoint.c
b/arch/powerpc/kernel/hw_breakpoint.c
index 0000daf0e1da..270e655108f4 100644
--- a/arch/powerpc/kernel/hw_breakpoint.c
+++ b/arch/powerpc/kernel/hw_breakpoint.c
@@ -418,8 +418,9 @@ static int hw_breakpoint_validate_len(struct
arch_hw_breakpoint *hw)
if (dawr_enabled()) {
max_len = DAWR_MAX_LEN;
- /* DAWR region can't cross 512 bytes boundary */
- if (ALIGN(start_addr, SZ_512M) != ALIGN(end_addr - 1, SZ_512M))
+ /* DAWR region can't cross 512 bytes boundary on p8 and p9 */
+ if (!cpu_has_feature(CPU_FTR_ARCH_31) &&
+ (ALIGN(start_addr, SZ_512M) != ALIGN(end_addr - 1,
SZ_512M)))
return -EINVAL;
} else if (IS_ENABLED(CONFIG_PPC_8xx)) {
/* 8xx can setup a range without limitation */
--
2.26.2
