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From: Roger Pau Monne <roger.pau@citrix.com>
To: xen-devel@lists.xenproject.org
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
	Wei Liu <wei.liu2@citrix.com>, Jan Beulich <jbeulich@suse.com>,
	Roger Pau Monne <roger.pau@citrix.com>
Subject: [PATCH v3 3/7] x86/pvh: allow PVH Dom0 to use the debug IO port console
Date: Tue, 30 Oct 2018 16:41:19 +0100	[thread overview]
Message-ID: <20181030154123.4218-4-roger.pau@citrix.com> (raw)
In-Reply-To: <20181030154123.4218-1-roger.pau@citrix.com>

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 <roger.pau@citrix.com>
---
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
---
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


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  parent reply	other threads:[~2018-10-30 15:41 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-30 15:41 [PATCH v3 0/7] x86/pvh: fix fixes for PVH Dom0 Roger Pau Monne
2018-10-30 15:41 ` [PATCH v3 1/7] x86/pvh: fix TSC mode setup " Roger Pau Monne
2018-10-30 15:41 ` [PATCH v3 2/7] x86/hvm: introduce a define for the debug output IO port Roger Pau Monne
2018-10-31 16:36   ` Wei Liu
2018-10-30 15:41 ` Roger Pau Monne [this message]
2018-10-30 16:27   ` [PATCH v3 3/7] x86/pvh: allow PVH Dom0 to use the debug IO port console Wei Liu
2018-10-30 15:41 ` [PATCH v3 4/7] vpci: fix updating the command register Roger Pau Monne
2018-11-05 16:46   ` Jan Beulich
2018-11-07 10:47     ` Roger Pau Monné
2018-11-07 15:00       ` Jan Beulich
2018-10-30 15:41 ` [PATCH v3 5/7] vpci: fix execution of long running operations Roger Pau Monne
2018-11-05 16:56   ` Jan Beulich
2018-11-07 11:11     ` Roger Pau Monné
2018-11-07 15:06       ` Jan Beulich
2018-11-07 17:15         ` Roger Pau Monné
2018-11-08  9:55           ` Jan Beulich
2018-11-08 11:29             ` Roger Pau Monné
2018-11-08 11:42               ` Julien Grall
2018-11-08 11:44                 ` Roger Pau Monné
2018-11-08 11:52                   ` Julien Grall
2018-11-08 12:20                     ` Roger Pau Monné
2018-11-08 12:38                       ` Julien Grall
2018-11-08 12:32               ` Jan Beulich
2018-11-08 12:47                 ` Roger Pau Monné
2018-11-08 13:04                   ` Jan Beulich
2018-11-08 13:20                     ` Roger Pau Monné
     [not found]                       ` <791E55F8020000889527FA34@prv1-mh.provo.novell.com>
2018-11-08 16:25                         ` Jan Beulich
2018-11-08 16:59                           ` Roger Pau Monné
     [not found]                             ` <E720D0C40200003B9527FA34@prv1-mh.provo.novell.com>
2018-11-09  8:02                               ` Jan Beulich
2018-10-30 15:41 ` [PATCH v3 6/7] vpci/msix: carve p2m hole for MSIX MMIO regions Roger Pau Monne
2018-11-05 17:07   ` Jan Beulich
2018-11-07 11:33     ` Roger Pau Monné
2018-10-30 15:41 ` [PATCH v3 7/7] amd/pvh: enable ACPI C1E disable quirk on PVH Dom0 Roger Pau Monne
2018-10-30 16:28   ` Wei Liu
2018-10-31 17:44   ` Boris Ostrovsky
2018-11-02  9:06   ` Jan Beulich
2018-11-07 10:24     ` Roger Pau Monné

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