Re: [PATCH] KVM: selftests: arm64: Skip sea_to_user without 1GB hugepages

Marc Zyngier <[email protected]> Mon, 17 Aug 2026 09:52:58 +0100

Newsgroups	dev.linux.lists.kvmarm,org.kernel.vger.kvm,org.kernel.vger.linux-kernel
Message-ID	<[email protected]>

+ Jiaqi.

On Mon, 17 Aug 2026 09:07:59 +0100,
Like Xu <[email protected]> wrote:
> 
> sea_to_user backs guest memory with 1GB hugepages but never checks any
> are reserved, aborting instead of skipping when the host has none:
> 
>   kvm_syscalls.h:68: mem != MAP_FAILED, errno=12 (ENOMEM)
>   not ok 1 selftests: kvm: sea_to_user # exit=254
> 
> Check for enough free hugepages up front so the test skips cleanly.

See my comments at [1].

This test is totally borked, and Jiaqi stopped replying. It is a
liability, and I'd like it *removed*. But if you want to fix it,
please go ahead.

	M.

[1] https://lore.kernel.org/all/[email protected]/

-- 
Without deviation from the norm, progress is not possible.