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(parent: 413a6fb) | patch
rombios/ata: Reading this status register has no relevant side effects
authorAndrew Cooper <andrew.cooper3@citrix.com>
Tue, 6 Aug 2013 13:48:38 +0000 (14:48 +0100)
committerIan Campbell <ian.campbell@citrix.com>
Thu, 8 Aug 2013 11:03:16 +0000 (12:03 +0100)
commitdb46adf193be09e33fb1778f840cda5de91c777e
tree1c6037658eb46e4a7bc1d66ce013d35e58a4cbcctree | snapshot
parent413a6fb4ee81897acafefb90f81ef3d2661c3aa6commit | diff
rombios/ata: Reading this status register has no relevant side effects

So taking two traps when one will do is pointless.  This removes 1 of 13
VMExits on the int 0x13 hotpath.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
tools/firmware/rombios/rombios.c diff | blob | history
Unnamed repository; edit this file 'description' to name the repository.