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Re: [Xen-devel] Question re do_switch_stack()

from [Keir Fraser] [Permanent Link][Original]
To: Avi Kivity <avi.kivity@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Question re do_switch_stack()
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Thu, 9 Jun 2005 16:32:12 +0100
Cc: Kip Macy <kip.macy@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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On 9 Jun 2005, at 16:22, Avi Kivity wrote:
the tss is not consulted on iretd as far as I can tell, and kernel_sp is 
only loaded in create_bounce_frame. what did I miss?

thanks in advance.
The actual stack switch occurs in do_switch() macro defined in include/asm-xen/asm-i386/system.h.
do_stack_switch() changes the stack that Xen switches to when switching to ring 1 when previously the guest was executing in ring 3. 

 -- Keir


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