* [PATCH 6 of 6 V6] libxl: Introduce a new guest config file parameter
2012-03-08 13:21 [PATCH 0 of 6 V6] amd iommu: support ats/gpgpu passthru on iommuv2 systems Wei Wang
@ 2012-03-08 13:21 ` Wei Wang
0 siblings, 0 replies; 2+ messages in thread
From: Wei Wang @ 2012-03-08 13:21 UTC (permalink / raw)
To: Ian.Jackson, Ian.Campbell, JBeulich, keir; +Cc: xen-devel
# HG changeset patch
# User Wei Wang <wei.wang2@amd.com>
# Date 1331210225 -3600
# Node ID 4c16ebeae0adace4493299b2f6d9c74ce8e6f889
# Parent 0a1de2dea27370d71d2572869d363d9e5833648e
libxl: Introduce a new guest config file parameter
Use guest_iommu = {1,0} to enable or disable guest iommu emulation.
Default value is 0. Regression tests have been done to make sure
it does not break non-iommuv2 systems.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
Acked-by: Ian Jackson<ian.jackson@eu.citrix.com>
diff -r 0a1de2dea273 -r 4c16ebeae0ad docs/man/xl.cfg.pod.5
--- a/docs/man/xl.cfg.pod.5 Thu Mar 08 13:37:02 2012 +0100
+++ b/docs/man/xl.cfg.pod.5 Thu Mar 08 13:37:05 2012 +0100
@@ -851,6 +851,11 @@ certainly belong in a more appropriate s
Enable graphics device PCI passthrough. XXX which device is passed through ?
+=item B<guest_iommu=BOOLEAN>
+
+Enable a virtual iommu device for hvm guest. It should be enabled to
+passthrough AMD HD7900 series GPGPU.
+
=item B<nomigrate=BOOLEAN>
Disable migration of this domain. This enables certain other features
diff -r 0a1de2dea273 -r 4c16ebeae0ad tools/libxl/libxl_create.c
--- a/tools/libxl/libxl_create.c Thu Mar 08 13:37:02 2012 +0100
+++ b/tools/libxl/libxl_create.c Thu Mar 08 13:37:05 2012 +0100
@@ -146,6 +146,7 @@ int libxl__domain_build_info_setdefault(
libxl_defbool_setdefault(&b_info->u.hvm.hpet, true);
libxl_defbool_setdefault(&b_info->u.hvm.vpt_align, true);
libxl_defbool_setdefault(&b_info->u.hvm.nested_hvm, false);
+ libxl_defbool_setdefault(&b_info->u.hvm.guest_iommu, false);
libxl_defbool_setdefault(&b_info->u.hvm.incr_generationid, false);
libxl_defbool_setdefault(&b_info->u.hvm.usb, false);
libxl_defbool_setdefault(&b_info->u.hvm.xen_platform_pci, true);
@@ -237,13 +238,15 @@ int libxl__domain_build(libxl__gc *gc,
vments[4] = "start_time";
vments[5] = libxl__sprintf(gc, "%lu.%02d", start_time.tv_sec,(int)start_time.tv_usec/10000);
- localents = libxl__calloc(gc, 7, sizeof(char *));
+ localents = libxl__calloc(gc, 9, sizeof(char *));
localents[0] = "platform/acpi";
localents[1] = libxl_defbool_val(info->u.hvm.acpi) ? "1" : "0";
localents[2] = "platform/acpi_s3";
localents[3] = libxl_defbool_val(info->u.hvm.acpi_s3) ? "1" : "0";
localents[4] = "platform/acpi_s4";
localents[5] = libxl_defbool_val(info->u.hvm.acpi_s4) ? "1" : "0";
+ localents[6] = "guest_iommu";
+ localents[7] = libxl_defbool_val(info->u.hvm.guest_iommu) ? "1" : "0";
break;
case LIBXL_DOMAIN_TYPE_PV:
diff -r 0a1de2dea273 -r 4c16ebeae0ad tools/libxl/libxl_types.idl
--- a/tools/libxl/libxl_types.idl Thu Mar 08 13:37:02 2012 +0100
+++ b/tools/libxl/libxl_types.idl Thu Mar 08 13:37:05 2012 +0100
@@ -268,6 +268,7 @@ libxl_domain_build_info = Struct("domain
("vpt_align", libxl_defbool),
("timer_mode", libxl_timer_mode),
("nested_hvm", libxl_defbool),
+ ("guest_iommu", libxl_defbool),
("incr_generationid",libxl_defbool),
("nographic", libxl_defbool),
("stdvga", libxl_defbool),
diff -r 0a1de2dea273 -r 4c16ebeae0ad tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c Thu Mar 08 13:37:02 2012 +0100
+++ b/tools/libxl/xl_cmdimpl.c Thu Mar 08 13:37:05 2012 +0100
@@ -749,6 +749,7 @@ static void parse_config_data(const char
}
xlu_cfg_get_defbool(config, "nestedhvm", &b_info->u.hvm.nested_hvm, 0);
+ xlu_cfg_get_defbool(config, "guest_iommu", &b_info->u.hvm.guest_iommu, 0);
break;
case LIBXL_DOMAIN_TYPE_PV:
{
^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH 6 of 6 V6] libxl: Introduce a new guest config file parameter
@ 2012-09-26 14:47 Wei Wang
0 siblings, 0 replies; 2+ messages in thread
From: Wei Wang @ 2012-09-26 14:47 UTC (permalink / raw)
To: xen-devel@lists.xensource.com, Jan Beulich, Keir Fraser,
Ian Campbell, Ian Jackson
[-- Attachment #1: Type: text/plain, Size: 2 bytes --]
[-- Attachment #2: 0006-libxl-Introduce-a-new-guest-config-file-parameter.patch --]
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From 3b17aad3f1275cab439f69a4d037097f1cbcd6f6 Mon Sep 17 00:00:00 2001
From: Wei Wang <wei.wang2@amd.com>
Date: Wed, 26 Sep 2012 11:48:23 +0200
Subject: [PATCH 6/6] libxl: Introduce a new guest config file parameter
Use guest_iommu = {1,0} to enable or disable guest iommu emulation.
Default value is 0. Regression tests have been done to make sure
it does not break non-iommuv2 systems.
Signed-off-by: Wei Wang <wei.wang2@amd.com>
---
docs/man/xl.cfg.pod.5 | 5 +++++
tools/libxl/libxl_create.c | 5 ++++-
tools/libxl/libxl_types.idl | 1 +
tools/libxl/xl_cmdimpl.c | 1 +
4 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/docs/man/xl.cfg.pod.5 b/docs/man/xl.cfg.pod.5
index 013270d..2bef429 100644
--- a/docs/man/xl.cfg.pod.5
+++ b/docs/man/xl.cfg.pod.5
@@ -270,6 +270,11 @@ UUID will be generated.
Assign an XSM security label to this domain.
+=item B<guest_iommu=BOOLEAN>
+
+Enable a virtual iommu device for hvm guest. It should be enabled to
+passthrough AMD HD7900 series GPGPU.
+
=item B<nomigrate=BOOLEAN>
Disable migration of this domain. This enables certain other features
diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index ef17f05..5854a13 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -250,6 +250,7 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc,
libxl_defbool_setdefault(&b_info->u.hvm.nested_hvm, false);
libxl_defbool_setdefault(&b_info->u.hvm.usb, false);
libxl_defbool_setdefault(&b_info->u.hvm.xen_platform_pci, true);
+ libxl_defbool_setdefault(&b_info->u.hvm.guest_iommu, false);
if (!b_info->u.hvm.boot) {
b_info->u.hvm.boot = strdup("cda");
@@ -340,13 +341,15 @@ int libxl__domain_build(libxl__gc *gc,
vments[4] = "start_time";
vments[5] = libxl__sprintf(gc, "%lu.%02d", start_time.tv_sec,(int)start_time.tv_usec/10000);
- localents = libxl__calloc(gc, 7, sizeof(char *));
+ localents = libxl__calloc(gc, 9, sizeof(char *));
localents[0] = "platform/acpi";
localents[1] = libxl_defbool_val(info->u.hvm.acpi) ? "1" : "0";
localents[2] = "platform/acpi_s3";
localents[3] = libxl_defbool_val(info->u.hvm.acpi_s3) ? "1" : "0";
localents[4] = "platform/acpi_s4";
localents[5] = libxl_defbool_val(info->u.hvm.acpi_s4) ? "1" : "0";
+ localents[6] = "guest_iommu";
+ localents[7] = libxl_defbool_val(info->u.hvm.guest_iommu) ? "1" : "0";
break;
case LIBXL_DOMAIN_TYPE_PV:
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index 6d5c578..afd50a1 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -319,6 +319,7 @@ libxl_domain_build_info = Struct("domain_build_info",[
("usbdevice", string),
("soundhw", string),
("xen_platform_pci", libxl_defbool),
+ ("guest_iommu", libxl_defbool),
])),
("pv", Struct(None, [("kernel", string),
("slack_memkb", MemKB),
diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index 1627cac..b7e10b6 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -864,6 +864,7 @@ static void parse_config_data(const char *config_source,
}
xlu_cfg_get_defbool(config, "nestedhvm", &b_info->u.hvm.nested_hvm, 0);
+ xlu_cfg_get_defbool(config, "guest_iommu", &b_info->u.hvm.guest_iommu, 0);
break;
case LIBXL_DOMAIN_TYPE_PV:
{
--
1.7.4
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