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[Xen-devel] [PATCH][VTD][QUIRK] add spin lock across snb preamble and postamble functions

  • To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Kay, Allen M" <allen.m.kay@xxxxxxxxx>
  • Date: Mon, 7 Feb 2011 16:31:50 -0800
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Cc: Keir Fraser <keir@xxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>
  • Delivery-date: Mon, 07 Feb 2011 16:32:45 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcvHJ5OCm/C6ssq4Rz6TZM0k8FCh6w==
  • Thread-topic: [PATCH][VTD][QUIRK] add spin lock across snb preamble and postamble functions
Added a spinlock across snb_vtd_ops_preamble() and snb_vtd_ops_postamble() to 
make modifications to IGD registers atomic.  Continue keeping snb_igd_quirk 
default off.

Signed-off-by: Allen Kay <allen.m.kay@xxxxxxxxx>

Attachment: lock02072.patch
Description: lock02072.patch

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