From: Tomasz Wroblewski <tomasz.wroblewski@citrix.com>
To: "Mihai Donțu" <mihai.dontu@gmail.com>
Cc: xen-devel@lists.xen.org, Razvan Cojocaru <rzvncj@gmail.com>,
Ian Campbell <Ian.Campbell@citrix.com>
Subject: Re: Why does xc_map_foreign_range() refuse to map pfns below 1M from a domU
Date: Wed, 4 Dec 2013 15:19:54 +0100 [thread overview]
Message-ID: <529F3A0A.9010602@citrix.com> (raw)
In-Reply-To: <20131204134240.356627e9@mdontu-l>
> Razvan and I are working together to find a solution to this. I took
> your patch for a spin and while that code path is taken when invoking
> xc_map_foreign_range(), the call still fails with EINVAL. I haven't yet
> determined if the call stops in the domU kernel or it reaches xen and
> gets terminated there. I've tried this on Ubuntu's 3.8. on top of
> XenServer's xen-4.3.1.
>
Not sure why the patch doesn't work for you (you applied it to domU kernel which ties to map, right?), but before we applied this, the
EINVAL was coming from hypervisor's HYPERVISOR_mmu_update in xen_remap_domain_mfn_range(), since the PTE constructed by xen_make_pte was
invalid for the other domain.
> Thanks,
>
next prev parent reply other threads:[~2013-12-04 14:19 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-03 15:06 Why does xc_map_foreign_range() refuse to map pfns below 1M from a domU Razvan Cojocaru
2013-12-03 15:51 ` Ian Campbell
2013-12-03 15:59 ` Razvan Cojocaru
2013-12-03 16:09 ` Ian Campbell
2013-12-03 17:36 ` Tomasz Wroblewski
2013-12-03 18:59 ` Razvan Cojocaru
2013-12-03 19:07 ` Konrad Rzeszutek Wilk
2013-12-04 10:24 ` Tomasz Wroblewski
2013-12-04 10:31 ` Jan Beulich
2013-12-04 10:39 ` Ian Campbell
2013-12-04 10:42 ` Jan Beulich
2013-12-04 10:45 ` Ian Campbell
2013-12-04 10:54 ` Jan Beulich
2013-12-04 11:04 ` Ian Campbell
2013-12-04 11:23 ` Tomasz Wroblewski
2013-12-04 11:36 ` Jan Beulich
2013-12-04 12:01 ` Tomasz Wroblewski
2013-12-04 12:14 ` Jan Beulich
2013-12-04 12:23 ` Ian Campbell
2013-12-04 12:39 ` Jan Beulich
2013-12-04 16:40 ` Konrad Rzeszutek Wilk
2013-12-04 17:16 ` Tomasz Wroblewski
2014-07-08 14:54 ` Mihai Donțu
2013-12-04 11:42 ` Mihai Donțu
2013-12-04 14:19 ` Tomasz Wroblewski [this message]
2013-12-04 16:15 ` Mihai Donțu
-- strict thread matches above, loose matches on Subject: below --
2013-12-03 16:18 Razvan Cojocaru
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