On 11/11/2022 10:11, Henry Wang wrote:
-----Original Message----- Subject: [PATCH 4/4] xen/arm: Correct the p2m pool size calculations Allocating or freeing p2m pages doesn't alter the size of the mempool; only the split between free and used pages. Right now, the hypercalls operate on the free subset of the pool, meaning that XEN_DOMCTL_get_p2m_mempool_size varies with time as the guest shuffles its physmap, and XEN_DOMCTL_set_p2m_mempool_size ignores the used subset of the pool and lets the guest grow unbounded. This fixes test-p2m-pool on ARM so that the behaviour matches x86. This is part of XSA-409 / CVE-2022-33747. Fixes: cbea5a1149ca ("xen/arm: Allocate and free P2M pages from the P2M pool") Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>Release-acked-by: Henry Wang <henry.w...@arm.com> Hi Arm maintainers, may I ask for a reviewed-by/ack from you for the correctness of the code in the release? Thank you very much!
Reviewed-by: Julien Grall <jgr...@amazon.com> Cheers, -- Julien Grall
