From: Sergey Fedorov <serge.fdrv@gmail.com>
To: Richard Henderson <rth@twiddle.net>,
Sergey Fedorov <sergey.fedorov@linaro.org>,
qemu-devel@nongnu.org
Cc: "Alex Bennée" <alex.bennee@linaro.org>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Peter Crosthwaite" <crosthwaite.peter@gmail.com>
Subject: Re: [Qemu-devel] [PATCH] cpu-exec: Fix direct jump to TB spanning page
Date: Wed, 25 May 2016 19:37:11 +0300 [thread overview]
Message-ID: <5745D4B7.40705@gmail.com> (raw)
In-Reply-To: <5739DAE2.3010802@gmail.com>
On 16/05/16 17:36, Sergey Fedorov wrote:
> On 16/05/16 16:49, Richard Henderson wrote:
>> On 05/16/2016 06:13 AM, Sergey Fedorov wrote:
>>> It is not safe to make a direct jump to a TB spanning two pages in
>>> system emulation because the mapping for the second page can get changed
>>> but we don't take care of direct jumps in this case.
>> We don't? I'm pretty sure that we do...
> What we just do is flushing the CPU virtual address cache, see for
> tlb_flush() etc.
Ping. This patch fixed a bug discussed in this thread:
http://thread.gmane.org/gmane.comp.emulators.qemu/411648
Kind regards,
Sergey
next prev parent reply other threads:[~2016-05-25 16:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-16 13:13 [Qemu-devel] [PATCH] cpu-exec: Fix direct jump to TB spanning page Sergey Fedorov
2016-05-16 13:49 ` Richard Henderson
2016-05-16 14:36 ` Sergey Fedorov
2016-05-25 16:37 ` Sergey Fedorov [this message]
2016-05-26 12:52 ` Peter Maydell
2016-05-16 14:43 ` Max Filippov
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