Re: [PATCH] powerpc/mm: Revert "powerpc/mm: Remove DEBUG_VM_PGTABLE support on powerpc"

On 3/19/21 6:42 AM, Michael Ellerman wrote:

"Aneesh Kumar K.V" [off-list ref] writes:

quoted

This reverts commit 675bceb097e6 ("powerpc/mm: Remove DEBUG_VM_PGTABLE support on powerpc")

All the related issues are fixed by the series
https://lore.kernel.org/linux-mm/20200902114222.181353-1-aneesh.kumar@linux.ibm.com (local)

Was that series merged?

If so this seems like this could be tagged as a Fix for the last commit
in that series.

commit f14312e1ed1e ("mm/debug_vm_pgtable: avoid doing memory allocation 
with pgtable_t mapped.")

cheers

quoted

Hence enable it back

Signed-off-by: Aneesh Kumar K.V <redacted>
---
  Documentation/features/debug/debug-vm-pgtable/arch-support.txt | 2 +-
  arch/powerpc/Kconfig                                           | 1 +
  2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/features/debug/debug-vm-pgtable/arch-support.txt b/Documentation/features/debug/debug-vm-pgtable/arch-support.txt
index 7aff505af706..fa83403b4aec 100644
--- a/Documentation/features/debug/debug-vm-pgtable/arch-support.txt
+++ b/Documentation/features/debug/debug-vm-pgtable/arch-support.txt

@@ -21,7 +21,7 @@
      |       nios2: | TODO |
      |    openrisc: | TODO |
      |      parisc: | TODO |
-    |     powerpc: | TODO |
+    |     powerpc: |  ok  |
      |       riscv: |  ok  |
      |        s390: |  ok  |
      |          sh: | TODO |

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 386ae12d8523..982c87d5c051 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig

@@ -119,6 +119,7 @@ config PPC
  	#
  	select ARCH_32BIT_OFF_T if PPC32
  	select ARCH_HAS_DEBUG_VIRTUAL
+	select ARCH_HAS_DEBUG_VM_PGTABLE
  	select ARCH_HAS_DEVMEM_IS_ALLOWED
  	select ARCH_HAS_ELF_RANDOMIZE
  	select ARCH_HAS_FORTIFY_SOURCE

-- 
2.30.2