Re: [PATCH v10 0/4] x86/pvh: fix unbootable VMs again (PVH + KASAN)

[Borislav Petkov]

On Tue, Sep 22, 2026 at 07:13:35PM -0300, Mauricio Faria de Oliveira wrote:
> I think that is fine, yes. Even though it's a boot failure, actually
> hitting it depends on all of: CONFIG_KASAN, CONFIG_PVH, booting from the
> PVH entry point, _plus_ a compiler version that triggers it.
> 
> Nonetheless, this may be picked up for stable due to the Fixes: tags,
> but I can provide backports as needed.

Right, just consider all the bandwidth of the folks involved downstream:
stable team and all distros backporting stuff every day. This sounds like an
exotic thing so let's be conservative here pls.

> BTW, I just realized that the title of patch 4/4 is missing memset().
> Would you mind adding it, please? Or I can send v11.
> -x86/cpuid: fix unbootable VMs by really inlining memcmp() in
> cpuid_base_hypervisor() and xen_prepare_pvh()
> +x86/cpuid: fix unbootable VMs by really inlining memcmp() and memset()
> in cpuid_base_hypervisor() and xen_prepare_pvh()

Sure, np.

Thx.

-- 
Regards/Gruss,
    Boris.

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