Messages in this thread | | | Date | Thu, 14 Sep 2017 23:24:30 +0300 | From | "Dmitry V. Levin" <> | Subject | Re: [PATCH] x86/asm/64: do not clear high 32 bits of syscall number when CONFIG_X86_X32=y |
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On Thu, Sep 14, 2017 at 07:40:43PM +0000, Eugene Syromyatnikov wrote: > On Wed, Sep 13, 2017 at 4:49 PM, Oleg Nesterov <oleg@redhat.com> wrote: > > IOW, why do we want to silently ignore the upper bits in $rax ? > > By the way, they are ignored elsewhere, in audit[1] or seccomp[2], for example. > > [1] include/linux/audit.h > [2] include/uapi/linux/seccomp.h, definition of struct seccomp_data
Yes, unfortunately, they are ignored later, but that is another story.
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