On Thu, Dec 26, 2013 at 2:03 AM, Christoph Hellwig <h...@infradead.org> wrote: > On Wed, Dec 25, 2013 at 06:54:47AM -0800, H.J. Lu wrote: >> Both x32 and x86-64 use the same struct rusage and struct rlimit for >> system calls. But x32 log is 32-bit. This patch change uapi >> <linux/resource.h> to use __kernel_long_t in struct rusage and >> __kernel_ulong_t in and struct rlimit. > > a) please send all your related patches as a series
My patches are independent of each other. They can be applied in order. > b) explain how these changes to shared ABI headers: > > 1) do not break any architecture, especially mips N32 which is > the MIPS equivalent of x32 I am not familiar with N32 system call interface. My patch may break N32 if N32 __kernel_long_t doesn't match what is used. I will update my patches to limit my changes to __BITS_PER_LONG == 64. > 2) do not break existing x32 binaries > 3) fix existing and future x32 binaries My patches just update kernel uabi header files to match x32 system calls. They don't break any x32 binaries, current and future. > c) why you suddenly need these changes now and not when the x32 ABI > support was submitted and hopefully heavily tested Kernel headers had been wrong for -m32/-mx32 on x86-64 for a long long time. Linux/x86-64 normally use header files from glibc, which avoids broken kernel header files. Kernel uabi header files fix -m32, but not -mx32, which I am working on now. Thanks. -- H.J. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
