This is a note to let you know that I've just added the patch titled
riscv: Correct SPARSEMEM configuration
to the 5.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
riscv-correct-sparsemem-configuration.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a5406a7ff56e63376c210b06072aa0ef23473366 Mon Sep 17 00:00:00 2001
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Date: Mon, 15 Mar 2021 20:03:07 +0800
Subject: riscv: Correct SPARSEMEM configuration
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
commit a5406a7ff56e63376c210b06072aa0ef23473366 upstream.
There are two issues for RV32,
1) if use FLATMEM, it is useless to enable SPARSEMEM_STATIC.
2) if use SPARSMEM, both SPARSEMEM_VMEMMAP and SPARSEMEM_STATIC is enabled.
Fixes: d95f1a542c3d ("RISC-V: Implement sparsemem")
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/riscv/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -87,7 +87,6 @@ config RISCV
select PCI_MSI if PCI
select RISCV_INTC
select RISCV_TIMER if RISCV_SBI
- select SPARSEMEM_STATIC if 32BIT
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
select THREAD_INFO_IN_TASK
@@ -148,7 +147,8 @@ config ARCH_FLATMEM_ENABLE
config ARCH_SPARSEMEM_ENABLE
def_bool y
depends on MMU
- select SPARSEMEM_VMEMMAP_ENABLE
+ select SPARSEMEM_STATIC if 32BIT && SPARSMEM
+ select SPARSEMEM_VMEMMAP_ENABLE if 64BIT
config ARCH_SELECT_MEMORY_MODEL
def_bool ARCH_SPARSEMEM_ENABLE
Patches currently in stable-queue which might be from wangkefeng.wang@xxxxxxxxxx are
queue-5.11/riscv-correct-sparsemem-configuration.patch
