From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Andy Lutomirski <luto@kernel.org>
Cc: X86 ML <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Brian Gerst <brgerst@gmail.com>,
Denys Vlasenko <dvlasenk@redhat.com>,
Borislav Petkov <bp@alien8.de>, Stas Sergeev <stsp@list.ru>,
Pavel Emelyanov <xemul@parallels.com>
Subject: Re: [PATCH v3 0/4] x86: sigcontext fixes, again
Date: Tue, 26 Jan 2016 11:22:43 +0300 [thread overview]
Message-ID: <20160126082243.GF22280@uranus> (raw)
In-Reply-To: <cover.1453754484.git.luto@kernel.org>
On Mon, Jan 25, 2016 at 01:34:11PM -0800, Andy Lutomirski wrote:
> This is take 2 at fixing x86 64-bit signals wrt SS. After a lot of
> thought, this is not controlled by any flags -- I would much prefer
> to avoid opt-in behavior. Instead, it just tries hard to avoid
> triggering the cases that break DOSEMU.
>
> Stas, this now seems to pass the test you sent me. It works with
> stock dosemu2 (I haven't tested classic dosemu because I can't get it
> to work regardless). It also works with a patched dosemu2 that bypasses
> the userspace trampoline:
>
> https://github.com/amluto/dosemu2/commit/571b4d08dc885b7a133e444a2ad23e0d21366206
>
> With this applied, all of the x86 selftests pass on x86_64. That
> wasn't the case before -- ldt_gdt_64 was broken.
I've been testing this series already. I guess ;) Anyway, gonna try
it one more shot at the evening, just to make sure. From a glance
everything looks just great!
next prev parent reply other threads:[~2016-01-26 8:22 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-25 21:34 [PATCH v3 0/4] x86: sigcontext fixes, again Andy Lutomirski
2016-01-25 21:34 ` [PATCH v3 1/4] x86/signal/64: Add a comment about sigcontext->fs and gs Andy Lutomirski
2016-01-25 21:34 ` [PATCH v3 2/4] x86/signal/64: Fix SS if needed when delivering a 64-bit signal Andy Lutomirski
2016-02-09 12:06 ` Borislav Petkov
2016-01-25 21:34 ` [PATCH v3 3/4] x86/signal/64: Re-add support for SS in the 64-bit signal context Andy Lutomirski
2016-02-11 19:49 ` Borislav Petkov
2016-02-12 1:01 ` Andy Lutomirski
2016-02-12 13:56 ` Borislav Petkov
2016-01-25 21:34 ` [PATCH v3 4/4] selftests/x86: Add tests for UC_SIGCONTEXT_SS and UC_STRICT_RESTORE_SS Andy Lutomirski
2016-02-11 19:53 ` Borislav Petkov
2016-02-12 0:46 ` Andy Lutomirski
2016-02-12 13:59 ` Borislav Petkov
2016-01-26 8:22 ` Cyrill Gorcunov [this message]
2016-01-26 19:51 ` [PATCH v3 0/4] x86: sigcontext fixes, again Cyrill Gorcunov
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