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From: Baoquan He <bhe@redhat.com>
To: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org, urezki@gmail.com,
	lstoakes@gmail.com, stephen.s.brennan@oracle.com,
	willy@infradead.org, akpm@linux-foundation.org,
	hch@infradead.org, Baoquan He <bhe@redhat.com>
Subject: [PATCH v3 7/7] sh: mm: set VM_IOREMAP flag to the vmalloc area
Date: Fri, 13 Jan 2023 11:19:21 +0800	[thread overview]
Message-ID: <20230113031921.64716-8-bhe@redhat.com> (raw)
In-Reply-To: <20230113031921.64716-1-bhe@redhat.com>

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.

Signed-off-by: Baoquan He <bhe@redhat.com>
---
 arch/sh/kernel/cpu/sh4/sq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c
index a76b94e41e91..27f2e3da5aa2 100644
--- a/arch/sh/kernel/cpu/sh4/sq.c
+++ b/arch/sh/kernel/cpu/sh4/sq.c
@@ -103,7 +103,7 @@ static int __sq_remap(struct sq_mapping *map, pgprot_t prot)
 #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;
-- 
2.34.1


  parent reply	other threads:[~2023-01-13  3:21 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-13  3:19 [PATCH v3 0/7] mm/vmalloc.c: allow vread() to read out vm_map_ram areas Baoquan He
2023-01-13  3:19 ` [PATCH v3 1/7] mm/vmalloc.c: add used_map into vmap_block to track space of vmap_block Baoquan He
2023-01-16 11:39   ` Uladzislau Rezki
2023-01-16 12:22   ` Lorenzo Stoakes
2023-01-13  3:19 ` [PATCH v3 2/7] mm/vmalloc.c: add flags to mark vm_map_ram area Baoquan He
2023-01-16 11:42   ` Uladzislau Rezki
2023-01-16 12:23   ` Lorenzo Stoakes
2023-01-18  2:13     ` Baoquan He
2023-01-13  3:19 ` [PATCH v3 3/7] mm/vmalloc.c: allow vread() to read out vm_map_ram areas Baoquan He
2023-01-13 15:51   ` kernel test robot
2023-01-14  7:57     ` Dan Carpenter
2023-01-15 14:08     ` Baoquan He
2023-01-16 13:08       ` Dan Carpenter
2023-01-18  2:17         ` Baoquan He
2023-01-16 11:50   ` Uladzislau Rezki
2023-01-19  9:52     ` Baoquan He
2023-01-19 12:48       ` Baoquan He
2023-01-20 11:54         ` Uladzislau Rezki
2023-01-16 19:01   ` Matthew Wilcox
2023-01-16 19:48     ` Lorenzo Stoakes
2023-01-13  3:19 ` [PATCH v3 4/7] mm/vmalloc: explicitly identify vm_map_ram area when shown in /proc/vmcoreinfo Baoquan He
2023-01-16 11:43   ` Uladzislau Rezki
2023-01-16 12:24   ` Lorenzo Stoakes
2023-01-13  3:19 ` [PATCH v3 5/7] mm/vmalloc: skip the uninitilized vmalloc areas Baoquan He
2023-01-16 11:44   ` Uladzislau Rezki
2023-01-16 12:24   ` Lorenzo Stoakes
2023-01-13  3:19 ` [PATCH v3 6/7] powerpc: mm: add VM_IOREMAP flag to the vmalloc area Baoquan He
2023-01-16 11:46   ` Uladzislau Rezki
2023-01-16 12:25   ` Lorenzo Stoakes
2023-01-13  3:19 ` Baoquan He [this message]
2023-01-16 11:46   ` [PATCH v3 7/7] sh: mm: set " Uladzislau Rezki
2023-01-16 12:25   ` Lorenzo Stoakes

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