Re: [PATCH] linux-user: Fix msqid_ds struct wrt 32-bit big endian architectures

Andreas Schwab <[email protected]> Mon, 03 Aug 2026 20:08:06 +0200

Newsgroups	gmane.comp.emulators.qemu
Message-ID	<[email protected]>

On Aug 01 2026, Helge Deller wrote:

> m68k could be a problem.
> The other big-arches seem to be handled correctly by the kernel:
> arch/sparc/include/uapi/asm/msgbuf.h:struct msqid64_ds {
> arch/parisc/include/uapi/asm/msgbuf.h:struct msqid64_ds {
> arch/xtensa/include/uapi/asm/msgbuf.h:struct msqid64_ds {
> arch/x86/include/uapi/asm/msgbuf.h:struct msqid64_ds {
> arch/powerpc/include/uapi/asm/msgbuf.h:struct msqid64_ds {
> arch/mips/include/uapi/asm/msgbuf.h:struct msqid64_ds {
> arch/mips/include/uapi/asm/msgbuf.h:struct msqid64_ds {
> arch/mips/include/uapi/asm/msgbuf.h:struct msqid64_ds {

glibc commit 9f9feb6d5d says:

    * Some older 32-bit big-endian architectures have padding before
      rather than after time fields, although the preferred generic
      approach is padding after the time fields independent of endianness.

and m68k uses the "preferred" approach.

-- 
Andreas Schwab, [email protected]
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