Re: [PATCH v4 0/4] x86/pvh: fix unbootable VMs again (PVH + KASAN)

[Borislav Petkov <bp@xxxxxxxxx>]

On Sat, May 30, 2026 at 03:25:25PM -0300, Mauricio Faria de Oliveira wrote:
> In this instance, the use case is to speed up the dev-test cycle when
> debugging on VMs: PVH allows booting directly from vmlinux, avoiding the
> need to build/compress and decompress bzImage, while KASAN helps detect
> issues early.

Makes sense in itself. And you can't do your use case with KVM? It has to be
Xen?

> Briefly, this is a side effect of reusing code from 'boot/string.c'
> through <asm/string.h>, which introduces additional complications;
> please see patch 1 for details.
> 
> These complications could be avoided by not reusing that code and
> instead adding slightly duplicated code [1] directly to <asm/string.h>,
> if that is preferred.

I'll take a look.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette