From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>,
xen-devel@lists.xenproject.org
Cc: Jan Beulich <jbeulich@suse.com>
Subject: Re: [PATCH v1 for-4.6 2/2] xen: prevent access to HPET from Dom0
Date: Fri, 19 Dec 2014 09:04:03 +0100 [thread overview]
Message-ID: <5493DBF3.5040705@citrix.com> (raw)
In-Reply-To: <5493224D.9050001@citrix.com>
Hello,
El 18/12/14 a les 19.51, Andrew Cooper ha escrit:
> On 18/12/14 18:27, Roger Pau Monne wrote:
>> Prevent Dom0 from accessing HPET MMIO region by adding it to the list of
>> denied memory regions.
>>
>> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
>> Cc: Jan Beulich <jbeulich@suse.com>
>> Cc: Andrew Cooper <andrew.cooper3@citrix.com>
>
> Apologies that this reply is split between patch 0 and 2 - I replied to
> your cover letter before reading this patch.
>
> Denying access is only valid if acpi_table_hpet.flags &
> ACPI_HPET_PAGE_PROTECT4 is true.
Thanks, if ACPI_HPET_PAGE_PROTECT4 is set then we can prevent access to
the full page and if ACPI_HPET_PAGE_PROTECT64 is set we can prevent
access to this page and the adjacent 60KB (15 pages). Will send an
updated version.
Roger.
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next prev parent reply other threads:[~2014-12-19 8:04 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-18 18:27 [PATCH v1 for-4.6 1/2] xen: fixes for PVH Dom0 MMIO regions Roger Pau Monne
2014-12-18 18:27 ` [PATCH v1 for-4.6 1/2] xen/pvh: check permissions when adding " Roger Pau Monne
2014-12-18 19:05 ` Andrew Cooper
2014-12-19 9:06 ` Jan Beulich
2014-12-18 18:27 ` [PATCH v1 for-4.6 2/2] xen: prevent access to HPET from Dom0 Roger Pau Monne
2014-12-18 18:51 ` Andrew Cooper
2014-12-19 8:04 ` Roger Pau Monné [this message]
2014-12-19 11:25 ` Andrew Cooper
2014-12-19 9:02 ` Jan Beulich
2014-12-19 9:11 ` Jan Beulich
2014-12-19 11:32 ` Andrew Cooper
2014-12-19 13:08 ` Jan Beulich
2014-12-19 9:01 ` Jan Beulich
2014-12-18 18:39 ` [PATCH v1 for-4.6 1/2] xen: fixes for PVH Dom0 MMIO regions Andrew Cooper
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