Messages in this thread Patch in this message | | | Date | Sun, 28 Feb 2016 10:40:19 +1100 | From | Stephen Rothwell <> | Subject | [PATCH v2] signals, pkeys: make si_pkey 32 bits |
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In order to prevent a change of alignment of the _sifields union in the siginfo structure on (some) 32 bit platforms and an ABI breakage, we change the type of _pkey to unsigned int. If more bits are needed in the future, a second unsigned int could be added.
Fixes: cd0ea35ff551 ("signals, pkeys: Notify userspace about protection key faults") Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> --- arch/ia64/include/uapi/asm/siginfo.h | 2 +- arch/mips/include/uapi/asm/siginfo.h | 2 +- include/uapi/asm-generic/siginfo.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/ia64/include/uapi/asm/siginfo.h b/arch/ia64/include/uapi/asm/siginfo.h index 0151cfab929d..19e7db0c9453 100644 --- a/arch/ia64/include/uapi/asm/siginfo.h +++ b/arch/ia64/include/uapi/asm/siginfo.h @@ -70,7 +70,7 @@ typedef struct siginfo { void __user *_upper; } _addr_bnd; /* used when si_code=SEGV_PKUERR */ - u64 _pkey; + unsigned int _pkey; }; } _sigfault; diff --git a/arch/mips/include/uapi/asm/siginfo.h b/arch/mips/include/uapi/asm/siginfo.h index 6f4edf0d794c..3cc14f4a5936 100644 --- a/arch/mips/include/uapi/asm/siginfo.h +++ b/arch/mips/include/uapi/asm/siginfo.h @@ -93,7 +93,7 @@ typedef struct siginfo { void __user *_upper; } _addr_bnd; /* used when si_code=SEGV_PKUERR */ - u64 _pkey; + unsigned int _pkey; }; } _sigfault; diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h index 90384d55225b..f4459dc3d31b 100644 --- a/include/uapi/asm-generic/siginfo.h +++ b/include/uapi/asm-generic/siginfo.h @@ -98,7 +98,7 @@ typedef struct siginfo { void __user *_upper; } _addr_bnd; /* used when si_code=SEGV_PKUERR */ - u64 _pkey; + unsigned int _pkey; }; } _sigfault; -- 2.7.0 -- Cheers, Stephen Rothwell
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