This patch doesn''t apply cleanly.
-- Keir
On 7 Jun 2005, at 01:13, Arun Sharma wrote:
>
> - Handle the case where the VMX domains get events from ports other
> than
> IOPACKET_PORT (because of paravirtualized drivers)
>
> - Use clear_bit() to operate on evtchn_upcall_pending
>
> Signed-off-by: Xiaofeng Ling <xiaofeng.ling@intel.com>
> Signed-off-by: Kevin Tian <kevin.tian@intel.com>
> Signed-off-by: Arun Sharma <arun.sharma@intel.com>
>
> --- trunk/xen/arch/x86/vmx_io.c (revision 1179)
> +++ trunk/xen/arch/x86/vmx_io.c (working copy)
> @@ -282,7 +282,7 @@
>
> /* Note: VMX domains may need upcalls as well */
> if (!ed->vcpu_info->evtchn_pending_sel)
> - ed->vcpu_info->evtchn_upcall_pending = 0;
> + clear_bit(0, &ed->vcpu_info->evtchn_upcall_pending);
>
> /* clear the pending bit for IOPACKET_PORT */
> return test_and_clear_bit(IOPACKET_PORT,
> @@ -310,10 +310,16 @@
> extern void do_block();
>
> do {
> - do_block();
> + if(!test_bit(IOPACKET_PORT,
> +
¤t->domain->shared_info->evtchn_pending[0]))
> + do_block();
> vmx_check_events(current);
> if (!test_bit(ARCH_VMX_IO_WAIT,
> ¤t->arch.arch_vmx.flags))
> break;
> + /* Events other than IOPACKET_PORT might have woken us up. In
> that
> + case, safely go back to sleep. */
> + clear_bit(IOPACKET_PORT>>5,
> ¤t->vcpu_info->evtchn_pending_sel);
> + clear_bit(0,
¤t->vcpu_info->evtchn_upcall_pending);
> } while(1);
> }
>
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