Re: Compat 32-bit syscall entry from 64-bit task!?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Jan 18, 2012 at 1:04 PM, H. Peter Anvin <hpa@xxxxxxxxx> wrote:
>
> Fair enough.  Sigh.  I still think an actual pseudo-register would be
> better.

.. and that breaks existing binaries too, because the indexing is
based on offsets into "struct pt_regs", and while we *could* change
that - leave pt_regs untouched but add a new virtual register - it
would be problematic.

We could add a whole new ptrace() access command (eg
PTRACE_GETSYSTEMREGSET), of course. But that's a lot of effort for
very little gain.

So on the whole, putting it in eflags seemed like the *much* simpler approach.

                 Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux