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 <[email protected]> --- Cc: Jan Beulich <[email protected]> Cc: Andrew Cooper <[email protected]> Cc: Wei Liu <[email protected]> --- Changes since v2: - Always enable the E9 debug console. Changes since v1: - Use a define for 0xe9. - Expand 'List of' in the Xen command doc. --- 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); -- 2.19.1 _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
