From: "Orzel, Michal" <michal.orzel@amd.com>
To: Stewart Hildebrand <stewart.hildebrand@amd.com>,
xen-devel@lists.xenproject.org
Cc: Stefano Stabellini <sstabellini@kernel.org>,
Julien Grall <julien@xen.org>,
Bertrand Marquis <bertrand.marquis@arm.com>,
Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: Re: [PATCH 2/6] xen/arm: fix math in add_hwdom_free_regions
Date: Mon, 5 May 2025 09:52:59 +0200 [thread overview]
Message-ID: <fa800ffa-eec3-4496-b157-f89d10b3650b@amd.com> (raw)
In-Reply-To: <20250505025631.207529-3-stewart.hildebrand@amd.com>
On 05/05/2025 04:56, Stewart Hildebrand wrote:
> Erroneous logic was duplicated from add_ext_regions() into
> add_hwdom_free_regions(). Frame numbers are converted to addresses, but
> the end address (e) is rounded down to page size alignment. The logic to
> calculate the size assumes e points to the last address, not page,
> effectively leading to the region size being erroneously calculated to
> be 2M smaller than the actual size of the region.
>
> Fix by adding 1 to the frame number before converting back to address.
>
> Fixes: 02975cc38389 ("xen/arm: permit non direct-mapped Dom0 construction")
> Signed-off-by: Stewart Hildebrand <stewart.hildebrand@amd.com>
Acked-by: Michal Orzel <michal.orzel@amd.com>
~Michal
next prev parent reply other threads:[~2025-05-05 7:53 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-05 2:56 [PATCH 0/6] arm: extended regions fixes Stewart Hildebrand
2025-05-05 2:56 ` [PATCH 1/6] xen/arm: fix math in add_ext_regions Stewart Hildebrand
2025-05-05 7:52 ` Orzel, Michal
2025-05-05 2:56 ` [PATCH 2/6] xen/arm: fix math in add_hwdom_free_regions Stewart Hildebrand
2025-05-05 7:52 ` Orzel, Michal [this message]
2025-05-08 6:56 ` Orzel, Michal
2025-05-08 10:30 ` Stewart Hildebrand
2025-05-08 10:31 ` Orzel, Michal
2025-05-05 2:56 ` [PATCH 3/6] xen/arm: switch find_domU_holes to rangesets Stewart Hildebrand
2025-05-05 23:25 ` Stefano Stabellini
2025-05-05 2:56 ` [PATCH 4/6] rangeset: introduce rangeset_subtract Stewart Hildebrand
2025-05-05 2:56 ` [PATCH 5/6] xen/arm: exclude xen,reg{-cacheable} from domU extended regions Stewart Hildebrand
2025-05-05 23:31 ` Stefano Stabellini
2025-05-07 17:20 ` Stewart Hildebrand
2025-05-05 2:56 ` [PATCH 6/6] tools/arm: exclude iomem " Stewart Hildebrand
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