From mboxrd@z Thu Jan  1 00:00:00 1970
From: Kip Macy <kip.macy@gmail.com>
Subject: Re: Question re do_switch_stack()
Date: Thu, 9 Jun 2005 07:44:56 -0700
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To: Avi Kivity <avi.kivity@qumranet.com>
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The stack_switch you're looking at is for setting the trap stack.

On 6/9/05, Avi Kivity <avi.kivity@qumranet.com> wrote:
> looking at do_stack_switch() (x86-32), I see that the switch is effected
> by moving the new stack pointer into current->arch.kernel_sp. however,
> entry.S only looks at kernel_sp in create_bounce_frame, but only if
> we're not returning into ring 1.
>=20
> how then is the switch caused? obviously the call to do_stack_switch
> came from ring 1.
>=20
> confused,
> Avi
>=20
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