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[Xen-devel] Re: [PATCH] [RFC] More fp instructions for realmode emulatio
| To: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: [PATCH] [RFC] More fp instructions for realmode emulation (Enables booting OS/2 as a HVM guest on Intel/VT hardware) |
| From: | Andi Kleen <andi@xxxxxxxxxxxxxx> |
| Date: | Mon, 03 Mar 2008 15:52:44 +0100 |
| Cc: | xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Trolle Selander <trolle.selander@xxxxxxxxx> |
| Delivery-date: | Tue, 11 Mar 2008 10:58:58 -0700 |
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| In-reply-to: | <C3EECFDB.14954%keir.fraser@xxxxxxxxxxxxx> (Keir Fraser's message of "Sat\, 01 Mar 2008 09\:18\:19 +0000") |
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Keir Fraser <keir.fraser@xxxxxxxxxxxxx> writes: > Intel SDM Volume 1 Section 8.6 (?X87 FPU Exception Synchronization?) is very > helpful in this regard. It confirms my suspicions, that we will need to wrap > the FPU inline asms in some fixup glue. The only exceptions to this rule are Yes you definitely need to. That was a kernel crash bug on native Linux some time ago... Also you need to do the same for any FXSAVEs/FXRSTORs if you haven't already. -Andi _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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