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[Xen-devel] Question re do_switch_stack()
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-devel] Question re do_switch_stack() |
| From: | Avi Kivity <avi.kivity@xxxxxxxxxxxx> |
| Date: | Thu, 09 Jun 2005 17:41:53 +0300 |
| Delivery-date: | Thu, 09 Jun 2005 14:41:22 +0000 |
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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. how then is the switch caused? obviously the call to do_stack_switch came from ring 1. confused, Avi _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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