These are a couple small fixes that enable 32-bit little endian ("ppcle")
processes to run on a ppc64le kernel. Currently this is of interest for
the purposes of emulating ia32 programs with native userland assistance
via box86[1] (see PR#279 for initial ppc support), but a standalone
userland is functional, and may be used to complement a future ppcle
kernel port. We (those of us working on the userland effort in the
void-ppc project[2]) hope to come up with an ABI proposal to submit to
submit to the libc projects as a new port.Cheers to Christophe Leroy and Michael Ellerman for converting the ppc vDSO to C, and Michael in particular for tracking down a small issue with it on ppcle, meaning the 32-bit LE vDSO gets to be functional instead of half-broken with the old asm. (Sorry it took a minute to push these patches, protonmail would not cooperate with git-send-email and then I took off for the holidays.) Cheers, Will Springer [she/her] [1]: https://github.com/ptitSeb/box86 [2]: https://voidlinux-ppc.org/ Joseph J Allen (1): powerpc: use kernel endianness in MSR in 32-bit signal handler Will Springer (1): powerpc/compat_sys: swap hi/lo parts of 64-bit syscall args in LE mode arch/powerpc/kernel/signal_32.c | 3 +- arch/powerpc/kernel/sys_ppc32.c | 49 +++++++++++++++++++-------------- 2 files changed, 30 insertions(+), 22 deletions(-) -- 2.29.2
