Re: [REGRESSION] x86_32 boot hang in 6.19-rc7 caused by b505f1944535 ("x86/kfence: avoid writing L1TF-vulnerable PTEs")

From: Dave Hansen

Date: Mon Jan 26 2026 - 15:36:41 EST


On 1/26/26 12:24, Andrew Morton wrote:
> I see that b505f1944535 prevented a Xen warning, but did it have any
> other runtime effects? If not, a prompt revert may be the way to
> proceed for now.

Yeah, that's fine.

At the same time ... KFENCE folks: I wonder if you've been testing on
highmem and/or 32-bit x86 builds or if there's much value to keeping
KFENCE maintained there.