diff options
| author | Baoquan He <bhe@redhat.com> | 2023-02-06 09:40:19 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-10 01:51:43 +0100 |
| commit | 728e5ae07dd6cf72676e67e376671e52b7ddfac3 (patch) | |
| tree | 032272cff02bfe1c820678b22c8e90d2b3e2fff2 | |
| parent | mm/vmalloc: skip the uninitilized vmalloc areas (diff) | |
| download | linux-728e5ae07dd6cf72676e67e376671e52b7ddfac3.tar.xz linux-728e5ae07dd6cf72676e67e376671e52b7ddfac3.zip | |
powerpc: mm: add VM_IOREMAP flag to the vmalloc area
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 io mapping in ioremap_phb() of ppc, we should set VM_IOREMAP in
flag to make it handled correctly as above.
Link: https://lkml.kernel.org/r/20230206084020.174506-7-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Dan Carpenter <error27@gmail.com>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | arch/powerpc/kernel/pci_64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index 0c7cfb9fab04..fd42059ae2a5 100644 --- a/arch/powerpc/kernel/pci_64.c +++ b/arch/powerpc/kernel/pci_64.c @@ -132,7 +132,7 @@ void __iomem *ioremap_phb(phys_addr_t paddr, unsigned long size) * address decoding but I'd rather not deal with those outside of the * reserved 64K legacy region. */ - area = __get_vm_area_caller(size, 0, PHB_IO_BASE, PHB_IO_END, + area = __get_vm_area_caller(size, VM_IOREMAP, PHB_IO_BASE, PHB_IO_END, __builtin_return_address(0)); if (!area) return NULL; |