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Re: [PATCH v2 1/3] xen/arm64: Fix incorrect DIRECTMAP_SIZE calculation
Hi Michal,
On 17/01/2023 11:43, Michal Orzel wrote:
The direct mapped area occupies L0 slots from 256 to 265 included
(i.e. 10 slots), resulting in 5TB (512GB * 10) of virtual address space.
However, due to incorrect slot subtraction (we take 9 slots into account)
we set DIRECTMAP_SIZE to 4.5TB instead. Fix it.
Note that we only support up to 2TB of physical memory so this is
a latent issue.
Fixes: 5263507b1b4a ("xen: arm: Use a direct mapping of RAM on arm64")
Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>
Cheers,
--
Julien Grall
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