From: Julien Grall <julien.grall@linaro.org>
To: Tamas K Lengyel <tklengyel@sec.in.tum.de>
Cc: wei.liu2@citrix.com, Ian Campbell <ian.campbell@citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Tim Deegan <tim@xen.org>, Ian Jackson <ian.jackson@eu.citrix.com>,
xen-devel@lists.xen.org, stefano.stabellini@citrix.com,
Jan Beulich <jbeulich@suse.com>, Keir Fraser <keir@xen.org>
Subject: Re: [PATCH V13 3/7] xen/arm: Allow hypervisor access to mem_access protected pages
Date: Thu, 12 Mar 2015 13:43:08 +0000 [thread overview]
Message-ID: <550197EC.5060803@linaro.org> (raw)
In-Reply-To: <CABfawhnSumpxyvaMN7H49-GwyubJ3HnkSh8jBRWjgQSAfTMPkQ@mail.gmail.com>
On 12/03/15 13:38, Tamas K Lengyel wrote:
> > + if ( flag == GV2M_WRITE )
> > + {
> > + switch ( t )
> > + {
> > + case p2m_ram_rw:
>
> > + case p2m_iommu_map_rw:
> > + case p2m_map_foreign:
> > + case p2m_grant_map_rw:
> > + case p2m_mmio_direct:
>
> We disallow guest copy from the above 4 types via get_page_from_gva. So
> I'm not sure if it's worth to check them here.
>
>
> You mean get_page_from_gva only works for p2m_ram_rw type? Is this the
> case for GV2M_READ as well?
Yes, currently p2m_ram_rw is the only type bound to a struct page.
--
Julien Grall
next prev parent reply other threads:[~2015-03-12 13:43 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-06 21:24 [PATCH V13 0/7] Mem_access for ARM Tamas K Lengyel
2015-03-06 21:24 ` [PATCH V13 1/7] xen/arm: p2m changes for mem_access support Tamas K Lengyel
2015-03-11 16:07 ` Stefano Stabellini
2015-03-11 17:05 ` Tamas K Lengyel
2015-03-12 11:27 ` Ian Campbell
2015-03-12 12:22 ` Tamas K Lengyel
2015-03-12 13:53 ` Ian Campbell
2015-03-12 12:57 ` Julien Grall
2015-03-12 13:18 ` Tamas K Lengyel
2015-03-12 13:25 ` Julien Grall
2015-03-12 13:55 ` Ian Campbell
2015-03-12 13:56 ` Ian Campbell
2015-03-12 14:10 ` Andrew Cooper
2015-03-12 16:56 ` Julien Grall
2015-03-12 17:11 ` Ian Campbell
2015-03-06 21:24 ` [PATCH V13 2/7] xen/arm: Implement domain_get_maximum_gpfn Tamas K Lengyel
2015-03-11 15:43 ` Stefano Stabellini
2015-03-06 21:24 ` [PATCH V13 3/7] xen/arm: Allow hypervisor access to mem_access protected pages Tamas K Lengyel
2015-03-12 12:08 ` Ian Campbell
2015-03-12 12:31 ` Tamas K Lengyel
2015-03-12 13:24 ` Julien Grall
2015-03-12 13:38 ` Tamas K Lengyel
2015-03-12 13:43 ` Julien Grall [this message]
2015-03-12 14:33 ` Tamas K Lengyel
2015-03-12 13:50 ` Julien Grall
2015-03-12 14:13 ` Tamas K Lengyel
2015-03-12 14:52 ` Julien Grall
2015-03-12 15:27 ` Ian Campbell
2015-03-12 15:40 ` Julien Grall
2015-03-12 15:44 ` Tamas K Lengyel
2015-03-12 15:56 ` Ian Campbell
2015-03-12 16:02 ` Tamas K Lengyel
2015-03-12 16:48 ` Ian Campbell
2015-03-12 16:55 ` Tamas K Lengyel
2015-03-12 15:54 ` Ian Campbell
2015-03-12 15:41 ` Tamas K Lengyel
2015-03-12 15:55 ` Ian Campbell
2015-03-12 16:10 ` Tamas K Lengyel
2015-03-06 21:24 ` [PATCH V13 4/7] xen/arm: Data abort exception (R/W) mem_events Tamas K Lengyel
2015-03-12 13:35 ` Ian Campbell
2015-03-12 15:13 ` Tamas K Lengyel
2015-03-12 15:19 ` Tamas K Lengyel
2015-03-12 15:24 ` Julien Grall
2015-03-12 15:35 ` Ian Campbell
2015-03-12 16:35 ` Julien Grall
2015-03-12 15:30 ` Ian Campbell
2015-03-12 15:13 ` Julien Grall
2015-03-12 15:26 ` Tamas K Lengyel
2015-03-12 15:37 ` Julien Grall
2015-03-12 15:46 ` Ian Campbell
2015-03-12 16:54 ` Julien Grall
2015-03-06 21:24 ` [PATCH V13 5/7] xen/arm: Instruction prefetch abort (X) mem_event handling Tamas K Lengyel
2015-03-23 14:32 ` Tamas K Lengyel
2015-03-23 15:15 ` Ian Campbell
2015-03-23 15:18 ` Ian Campbell
2015-03-23 15:47 ` Tamas K Lengyel
2015-03-23 16:22 ` Ian Campbell
2015-03-23 16:47 ` Tamas K Lengyel
2015-03-24 13:06 ` Tamas K Lengyel
2015-03-26 10:50 ` Ian Campbell
2015-03-26 11:24 ` Tamas K Lengyel
2015-03-26 11:53 ` Ian Campbell
2015-03-06 21:24 ` [PATCH V13 6/7] xen/arm: Enable mem_access on ARM Tamas K Lengyel
2015-03-12 13:36 ` Ian Campbell
2015-03-12 15:19 ` Julien Grall
2015-03-12 15:43 ` Tamas K Lengyel
2015-03-06 21:24 ` [PATCH V13 7/7] tools/libxc: Allocate magic page for mem access " Tamas K Lengyel
2015-03-12 13:36 ` Ian Campbell
2015-03-12 11:30 ` [PATCH V13 0/7] Mem_access for ARM Ian Campbell
2015-03-12 12:24 ` Tamas K Lengyel
2015-03-12 13:53 ` Ian Campbell
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