Re: ia64 exceptions (Re: [RFC][CFT][PATCHSET v1] uaccess unification)
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- To: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
- Subject: Re: ia64 exceptions (Re: [RFC][CFT][PATCHSET v1] uaccess unification)
- From: Tony Luck <tony.luck@xxxxxxxxx>
- Date: Wed, 5 Apr 2017 11:44:23 -0700
- Cc: "linux-ia64@xxxxxxxxxxxxxxx" <linux-ia64@xxxxxxxxxxxxxxx>, "linux-arch@xxxxxxxxxxxxxxx" <linux-arch@xxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Fenghua Yu <fenghua.yu@xxxxxxxxx>
- In-reply-to: <20170405080857.GR29622@ZenIV.linux.org.uk>
- References: <20170329055706.GH29622@ZenIV.linux.org.uk> <20170405050507.GQ29622@ZenIV.linux.org.uk> <20170405080857.GR29622@ZenIV.linux.org.uk>
On Wed, Apr 5, 2017 at 1:08 AM, Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:
> ... and sure enough, on generic kernel (CONFIG_ITANIUM) that yields a nice
> shiny oops at precisely that insn.
The right fix here might be to delete all the CONFIG_ITANIUM paths. I
doubt that anyone is still running upstream kernels on Merced CPUs
(and if they are, it might be a kindness to them to make them stop).
> We really need tests for uaccess primitives. That's not a recent regression,
> BTW - it had been that way since 2.3.48-pre2, as far as I can see.
Probably be handy for new architectures to test all the corner cases.
-Tony
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