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[Xen-devel] [SVM][PATCH] Remove unnecessary intr assist guest iF check

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Subject: [Xen-devel] [SVM][PATCH] Remove unnecessary intr assist guest iF check
From: "Woller, Thomas" <thomas.woller@xxxxxxx>
Date: Fri, 29 Sep 2006 13:45:50 -0500
Delivery-date: Fri, 29 Sep 2006 11:46:33 -0700
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Thread-index: Acbj93wuTSiU7nN+RoGwu6drZTJjOg==
Thread-topic: [SVM][PATCH] Remove unnecessary intr assist guest iF check
AMD-V does not require the delaying of interrupt injection if the guest
IF_FLAG disallows interrupts.  Remove the code in svm_intr_assist() that
was checking the guest IF in eflags.

This patch fixes the problem with HVM Windows guests, with observing a
very slow timer countdown on the initial boot menu, when there is more
than one boot option.  Kbd response in this same Windows boot menu is
also acceptably responsive with this patch.

Applies cleanly to 11677.

Signed-off-by: Tom Woller <thomas.woller@xxxxxxx> 

Please apply to xen-unstable.hg
Please apply to xen-3.0.3-testing


Attachment: svm_remove_guest_if_check.patch
Description: svm_remove_guest_if_check.patch

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