mirror of
https://github.com/qemu/qemu.git
synced 2026-07-08 17:46:10 +00:00
1e9f5deccd
Currently, CoCo VMs can perform conversion at the base page granularity,
which is the granularity that has to be tracked. In relevant setups, the
target page size is assumed to be equal to the host page size, thus
fixing the block size to the host page size.
However, since private memory and shared memory have different backend
at present, users can specify shared memory with a hugetlbfs backend
while private memory with guest_memfd backend only supports 4K page
size. In this scenario, ram_block->page_size is different from the host
page size which will trigger an assertion when retrieving the block
size.
To address this, return the host page size directly to relax the
restriction. This changes fixes a regression of using hugetlbfs backend
for shared memory within CoCo VMs, with or without VFIO devices' presence.
Acked-by: David Hildenbrand <david@redhat.com>
Tested-by: Farrah Chen <farrah.chen@intel.com>
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Link: https://lore.kernel.org/r/20251023095526.48365-2-chenyi.qiang@intel.com
[peterx: fix subject, per david]
Cc: qemu-stable <qemu-stable@nongnu.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
(cherry picked from commit 8922a758b2)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>