Messages in this thread | | | Subject | Re: [PATCH v3 02/22] compat: provide compat_ptr() on all architectures | From | "H. Peter Anvin" <> | Date | Mon, 6 Jan 2020 09:59:16 -0800 |
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On 2020-01-02 06:55, Arnd Bergmann wrote: > In order to avoid needless #ifdef CONFIG_COMPAT checks, > move the compat_ptr() definition to linux/compat.h > where it can be seen by any file regardless of the > architecture. > > Only s390 needs a special definition, this can use the > self-#define trick we have elsewhere. > > Signed-off-by: Arnd Bergmann <arnd@arndb.de> > --- > arch/arm64/include/asm/compat.h | 17 ----------------- > arch/mips/include/asm/compat.h | 18 ------------------ > arch/parisc/include/asm/compat.h | 17 ----------------- > arch/powerpc/include/asm/compat.h | 17 ----------------- > arch/powerpc/oprofile/backtrace.c | 2 +- > arch/s390/include/asm/compat.h | 6 +----- > arch/sparc/include/asm/compat.h | 17 ----------------- > arch/x86/include/asm/compat.h | 17 ----------------- > include/linux/compat.h | 18 ++++++++++++++++++ > 9 files changed, 20 insertions(+), 109 deletions(-) >
For x86:
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
It still suffers from the zero-one-infinity rule failure of the compat architecture as a whole, but that is a very different problem. In this case "compat" is obviously meaning "a 32-on-64 ABI" and simply centralizes a common API, which is a Good Thing[TM].
-hpa
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