From: Keir Fraser <keir.fraser@eu.citrix.com>
To: Kieran Mansley <kmansley@solarflare.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: xen_tlb_flush_all mfn validation panic
Date: Thu, 24 Dec 2009 16:01:09 +0000 [thread overview]
Message-ID: <C75940C5.5338%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <C75939F9.5334%keir.fraser@eu.citrix.com>
On 24/12/2009 15:32, "Keir Fraser" <keir.fraser@eu.citrix.com> wrote:
> On 24/12/2009 15:06, "Kieran Mansley" <kmansley@solarflare.com> 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
next prev parent reply other threads:[~2009-12-24 16:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-24 15:06 xen_tlb_flush_all mfn validation panic Kieran Mansley
2009-12-24 15:32 ` Keir Fraser
2009-12-24 16:01 ` Keir Fraser [this message]
2009-12-24 16:13 ` Kieran Mansley
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