Re: possible bug in powerpc LE compat syscalls with 64-bit args

Chris Metcalf [off-list ref] writes:

Reviewing what other platforms do, it seems like powerpc compat mode may
have the opposite problem in little-endian mode, since arguments are passed
in "hi, lo" order unconditionally in arch/powerpc/kernel/sys_ppc32.c.

PPC32 is always big-endian.

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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On 6/16/2016 5:42 PM, Andreas Schwab wrote:

Chris Metcalf [off-list ref] writes:

quoted

Reviewing what other platforms do, it seems like powerpc compat mode may
have the opposite problem in little-endian mode, since arguments are passed
in "hi, lo" order unconditionally in arch/powerpc/kernel/sys_ppc32.c.

PPC32 is always big-endian.

Sounds good then.

Commit 422b9b9684db ("powerpc/compat: 32-bit little endian machine
name is ppcle, not ppc") made me think there was support for a
little-endian 32-bit mode.

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Chris Metcalf, Mellanox Technologies
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