x86/nmi: avoid UB for P4-era watchdogs
authorJan Beulich <jbeulich@suse.com>
Fri, 20 Nov 2020 07:28:11 +0000 (08:28 +0100)
committerJan Beulich <jbeulich@suse.com>
Fri, 20 Nov 2020 07:28:11 +0000 (08:28 +0100)
commitbebb49125fd305ae7814d7d4fcc05a85cc2a21e0
treef606ad8c00f73374d5e3104ffde6e3554873a908
parent318a9175d5b145ab5b6a1f26b8312a88f9fb4d94
x86/nmi: avoid UB for P4-era watchdogs

Found by looking for patterns similar to the one Julien did spot in
pci_vtd_quirks().

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
xen/arch/x86/nmi.c