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Re: [Xen-devel] xen_tlb_flush_all mfn validation panic
| To: | Kieran Mansley <kmansley@xxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] xen_tlb_flush_all mfn validation panic |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 24 Dec 2009 16:01:09 +0000 |
| Cc: | |
| Delivery-date: | Thu, 24 Dec 2009 08:01:37 -0800 |
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| In-reply-to: | <C75939F9.5334%keir.fraser@xxxxxxxxxxxxx> |
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| Thread-index: | AcqEqryZuHWasn4dS4WA/TRApdEHNgAA4TPpAAEDSOY= |
| Thread-topic: | [Xen-devel] xen_tlb_flush_all mfn validation panic |
| User-agent: | Microsoft-Entourage/12.23.0.091001 |
On 24/12/2009 15:32, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote: > On 24/12/2009 15:06, "Kieran Mansley" <kmansley@xxxxxxxxxxxxxx> wrote: > >> The initial "bad gmfn" message seems to be due to an attempt to validate >> the mfn argument to the mmuext_op. It's not surprising to me that this >> fails as xen_tlb_flush_all doesn't supply an mfn argument - it's not >> needed for the MMUEXT_TLB_FLUSH_ALL command. Is there something that is >> supposed to mean that the mfn argument should be valid even when not >> explicitly set by the caller, or is the validation of the mfn for all >> mmuext_op commands a bug? > > The explicit check for INVALID_MFN is new, and that is obviously a bug. I > will sort out a suitable fix for this. Should be fixed by c/s 20723. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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