| Message ID | 20200604033443.70591-9-ravi.bangoria@linux.ibm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | powerpc/watchpoint: Enable 2nd DAWR on baremetal and powervm | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | warning | Failed to apply on branch powerpc/merge (4d8244d005b2a92c872a0a993c3aa94b5842e56b) |
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/next (4336b9337824a60a0b10013c622caeee99460db5) |
| snowpatch_ozlabs/build-ppc64le | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64be | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64e | success | Build succeeded |
| snowpatch_ozlabs/build-pmac32 | warning | Upstream build failed, couldn't test patch |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 11 lines checked |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c index 031e6defc08e..9a2899f25aae 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_DOWN(start_addr, SZ_512) != ALIGN_DOWN(end_addr - 1, SZ_512)) + /* DAWR region can't cross 512 bytes boundary on p10 predecessors */ + if (!cpu_has_feature(CPU_FTR_ARCH_31) && + (ALIGN_DOWN(start_addr, SZ_512) != ALIGN_DOWN(end_addr - 1, SZ_512))) return -EINVAL; } else if (IS_ENABLED(CONFIG_PPC_8xx)) { /* 8xx can setup a range without limitation */
Power10 has removed 512 bytes boundary from match criteria. i.e. The watch range can cross 512 bytes boundary. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> --- arch/powerpc/kernel/hw_breakpoint.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)