linux-kernel - Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit signal context

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Message-ID: <5623A072.9000100@list.ru>
Date:	Sun, 18 Oct 2015 16:36:50 +0300
From:	Stas Sergeev <stsp@...t.ru>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Denys Vlasenko <dvlasenk@...hat.com>,
	Pavel Emelyanov <xemul@...allels.com>,
	Borislav Petkov <bp@...en8.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Cyrill Gorcunov <gorcunov@...il.com>,
	Brian Gerst <brgerst@...il.com>, X86 ML <x86@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit
 signal context

15.10.2015 00:41, Andy Lutomirski пишет:
>> If this my
>> understanding is correct and the flag is just an indication rather
>> than a requested action, perhaps the name should be different,
>> e.g. UC_SIG_FROM_32BIT or the like?
>> Anyway, this is minor. :)
>> I'll try to test the patch within a few days, thanks for you time!
> No problem.  Thanks for being willing to test!
Hello Andy, I am unlucky at testing this.
dosemu doesn't even start for me on the git kernels.
After a half day of debugging, it seems the kernel forgets
to fill in the "err" field in the sigcontext struct when
page fault occurs. That confuses the dosemu's instruction
decoder.
Does this ring any bells?
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