Re: [PATCH v6 0/9] coco: guest: Enforce host page-size alignment for shared buffers
From: Jason Gunthorpe <jgg@ziepe.ca>
Date: 2026-09-23 15:58:37
Also in:
kvmarm, linux-coco, linux-iommu, lkml
On Wed, Sep 23, 2026 at 10:31:19AM +0530, Aneesh Kumar K.V wrote:
Jason Gunthorpe [off-list ref] writes:quoted
On Fri, Sep 18, 2026 at 05:52:31PM +0100, Catalin Marinas wrote:quoted
TBH, I'm tempted not to support this configuration at all, just fail gracefully if the realm page size doesn't match the host's. However, if that's a real world configuration,realm != host is going to be fairly common. host > realm is probably not that common, I would guess.Wouldn't it be more common to run a distro with a 4K page size as the guest on a custom hypervisor with a 4K or larger page size?
Maybe someday, but right now I think the 4k hyp is going to be common and people who really reach for 16/64k are going to need to run !4k guests too. Jason