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| author | Luis R. Rodriguez <[email protected]> | 2018-08-17 22:46:29 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2018-08-17 23:20:29 +0000 |
| commit | a3266bd49c721e2e0a71f352d83713fbd60caadb (patch) | |
| tree | 2a1fd45483467ffd8687f60e06c9b497dc40aee0 /drivers/base/firmware_loader/fallback.c | |
| parent | mm/memory_hotplug.c: drop unnecessary checks from register_mem_sect_under_node() (diff) | |
| download | kernel-a3266bd49c721e2e0a71f352d83713fbd60caadb.tar.gz kernel-a3266bd49c721e2e0a71f352d83713fbd60caadb.zip | |
mm: provide a fallback for PAGE_KERNEL_RO for architectures
Some architectures do not define certain PAGE_KERNEL_* flags, this is
either because:
a) The way to implement some of these flags is *not yet ported*, or
b) The architecture *has no way* to describe them
Over time we have accumulated a few PAGE_KERNEL_* fallback workarounds
for architectures in the kernel which do not define them using
*relatively safe* equivalents. Move these scattered fallback hacks into
asm-generic.
We start off with PAGE_KERNEL_RO using PAGE_KERNEL as a fallback. This
has been in place on the firmware loader for years. Move the fallback
into the respective asm-generic header.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Luis R. Rodriguez <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'drivers/base/firmware_loader/fallback.c')
| -rw-r--r-- | drivers/base/firmware_loader/fallback.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c index 202324291542..b5c865fe263b 100644 --- a/drivers/base/firmware_loader/fallback.c +++ b/drivers/base/firmware_loader/fallback.c @@ -219,11 +219,6 @@ static ssize_t firmware_loading_show(struct device *dev, return sprintf(buf, "%d\n", loading); } -/* Some architectures don't have PAGE_KERNEL_RO */ -#ifndef PAGE_KERNEL_RO -#define PAGE_KERNEL_RO PAGE_KERNEL -#endif - /* one pages buffer should be mapped/unmapped only once */ static int map_fw_priv_pages(struct fw_priv *fw_priv) { |