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From: Simon Martin <furryfuttock@gmail.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: Simon Martin <smartin@milliways.cl>,
	Ian Campbell <Ian.Campbell@citrix.com>,
	xen-devel <xen-devel@lists.xen.org>
Subject: Re: Stack switching in a PV guest
Date: Mon, 16 Dec 2013 11:56:08 -0300	[thread overview]
Message-ID: <1351251014.20131216115608@gmail.com> (raw)
In-Reply-To: <52AF2006020000780010DC0D@nat28.tlf.novell.com>

Thanks Jan,

> %rsp+24 ->> ???
> %rsp+32 ->> ???

> Those two are the crucial fields when you're having stack issues.

>From  the pt_regs description those looked like unused. I'll make sure
I fill them in now.

> Furthermore, the guest's kernel stack wants to be switched via
> __HYPERVISOR_stack_switch, or else the next interrupt/exception
> would end up still using the old stack.

Thank you very much. I'll investigate that.


-- 
Best regards,
 Simon                            mailto:furryfuttock@gmail.com

  reply	other threads:[~2013-12-16 14:56 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-16 13:31 Stack switching in a PV guest Simon Martin
2013-12-16 13:36 ` Ian Campbell
2013-12-16 13:50   ` Simon Martin
2013-12-16 14:45     ` Jan Beulich
2013-12-16 14:56       ` Simon Martin [this message]
2013-12-20 14:12         ` Simon Martin
2013-12-20 14:47           ` Jan Beulich
2013-12-20 15:10             ` Simon Martin
2013-12-20 15:48               ` Jan Beulich
2013-12-21  0:51           ` Mukesh Rathor

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