The patch titled
Subject: sh: mm: set VM_IOREMAP flag to the vmalloc area
has been added to the -mm mm-unstable branch. Its filename is
sh-mm-set-vm_ioremap-flag-to-the-vmalloc-area.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/sh-mm-set-vm_ioremap-flag-to-the-vmalloc-area.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Baoquan He <bhe@xxxxxxxxxx>
Subject: sh: mm: set VM_IOREMAP flag to the vmalloc area
Date: Mon, 6 Feb 2023 16:40:20 +0800
Currently, for vmalloc areas with flag VM_IOREMAP set, except of the
specific alignment clamping in __get_vm_area_node(), they will be
1) Shown as ioremap in /proc/vmallocinfo;
2) Ignored by /proc/kcore reading via vread()
So for the ioremap in __sq_remap() of sh, we should set VM_IOREMAP in flag
to make it handled correctly as above.
Link: https://lkml.kernel.org/r/20230206084020.174506-8-bhe@xxxxxxxxxx
Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
Reviewed-by: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Cc: Dan Carpenter <error27@xxxxxxxxx>
Cc: Stephen Brennan <stephen.s.brennan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/arch/sh/kernel/cpu/sh4/sq.c~sh-mm-set-vm_ioremap-flag-to-the-vmalloc-area
+++ a/arch/sh/kernel/cpu/sh4/sq.c
@@ -103,7 +103,7 @@ static int __sq_remap(struct sq_mapping
#if defined(CONFIG_MMU)
struct vm_struct *vma;
- vma = __get_vm_area_caller(map->size, VM_ALLOC, map->sq_addr,
+ vma = __get_vm_area_caller(map->size, VM_IOREMAP, map->sq_addr,
SQ_ADDRMAX, __builtin_return_address(0));
if (!vma)
return -ENOMEM;
_
Patches currently in -mm which might be from bhe@xxxxxxxxxx are
mm-vmallocc-add-used_map-into-vmap_block-to-track-space-of-vmap_block.patch
mm-vmallocc-add-flags-to-mark-vm_map_ram-area.patch
mm-vmallocc-allow-vread-to-read-out-vm_map_ram-areas.patch
mm-vmalloc-explicitly-identify-vm_map_ram-area-when-shown-in-proc-vmcoreinfo.patch
mm-vmalloc-skip-the-uninitilized-vmalloc-areas.patch
powerpc-mm-add-vm_ioremap-flag-to-the-vmalloc-area.patch
sh-mm-set-vm_ioremap-flag-to-the-vmalloc-area.patch
