From ce47462cb4d049971aedec51c1105673be41adce Mon Sep 17 00:00:00 2001 From: =?utf8?q?Roger=20Pau=20Monn=C3=A9?= Date: Wed, 31 Oct 2018 17:59:26 +0100 Subject: [PATCH] x86/pvh: allow PVH Dom0 to use the debug IO port console MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Force trapping accesses to IO port 0xe9 for a PVH Dom0, so it can print to the HVM debug console. Signed-off-by: Roger Pau Monné Reviewed-by: Wei Liu Acked-by: Jan Beulich --- xen/arch/x86/dom0_build.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/xen/arch/x86/dom0_build.c b/xen/arch/x86/dom0_build.c index fe73cef899..038e37132a 100644 --- a/xen/arch/x86/dom0_build.c +++ b/xen/arch/x86/dom0_build.c @@ -433,6 +433,12 @@ int __init dom0_setup_permissions(struct domain *d) rc |= ioports_deny_access(d, pmtmr_ioport, pmtmr_ioport + 3); /* PCI configuration space (NB. 0xcf8 has special treatment). */ rc |= ioports_deny_access(d, 0xcfc, 0xcff); +#ifdef CONFIG_HVM + if ( is_hvm_domain(d) ) + /* HVM debug console IO port. */ + rc |= ioports_deny_access(d, XEN_HVM_DEBUGCONS_IOPORT, + XEN_HVM_DEBUGCONS_IOPORT); +#endif /* Command-line I/O ranges. */ process_dom0_ioports_disable(d); -- 2.30.2