On 27/04/2022 14:51, Bertrand Marquis wrote:
Hi Julien,
Hi Bertrand,
On 27 Apr 2022, at 14:22, Julien Grall <[email protected]> wrote:
From: Julien Grall <[email protected]>
As part of XSA-385, SUPPORT.MD gained a statement regarding the amount
of physical memory supported.
However, booting Xen on a Arm platform with that amount of memory would
result to a breakage because the frametable area is too small.
The wiki [1] (as of April 2022) claims we were able to support up to
5 TiB on Arm64 and 16 GiB. However, this is not the case because
the struct page_info has always been bigger than expected (56 bytes
for 64-bit and 32-bytes for 32-bit).
I don't have any HW with such amount of memory. So rather than
modifying the code, take the opportunity to use the limit that should
work on Arm (2 TiB for 64-bit and 12 GiB for 32-bit).
Sadly I have no hardware either even remotely near this capacity and
I think those limits are right for now so...
Signed-off-by: Julien Grall <[email protected]>
Reviewed-by: Bertrand Marquis <[email protected]> #arm part
Thanks! The changes requested by Jan are easy to fix. So instead of
resubmitting, I have done the modifications and committed the patch
directly.
Cheers,
--
Julien Grall
