debuggers.hg
changeset 20870:07f95839e431
Enable IOMMU by default.
Can be disabled with 'iommu=0' boot parameter.
Note that iommu_inclusive_mapping is now also enabled by default, to
deal with systems with broken BIOS tables specifying bad RMRRs. Old
behaviour can be specified via 'iommu_inclusive_mapping=0'.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Can be disabled with 'iommu=0' boot parameter.
Note that iommu_inclusive_mapping is now also enabled by default, to
deal with systems with broken BIOS tables specifying bad RMRRs. Old
behaviour can be specified via 'iommu_inclusive_mapping=0'.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author | Keir Fraser <keir.fraser@citrix.com> |
---|---|
date | Tue Jan 19 15:44:54 2010 +0000 (2010-01-19) |
parents | 89907dab1aef |
children | 49a2c1069e14 |
files | xen/drivers/passthrough/iommu.c xen/drivers/passthrough/vtd/x86/vtd.c |
line diff
1.1 --- a/xen/drivers/passthrough/iommu.c Tue Jan 19 10:56:59 2010 +0000 1.2 +++ b/xen/drivers/passthrough/iommu.c Tue Jan 19 15:44:54 2010 +0000 1.3 @@ -37,13 +37,13 @@ static int iommu_populate_page_table(str 1.4 * no-intremap Disable VT-d Interrupt Remapping 1.5 */ 1.6 custom_param("iommu", parse_iommu_param); 1.7 -int iommu_enabled; 1.8 +int iommu_enabled = 1; 1.9 int iommu_pv_enabled; 1.10 int force_iommu; 1.11 int iommu_passthrough; 1.12 -int iommu_snoop; 1.13 -int iommu_qinval; 1.14 -int iommu_intremap; 1.15 +int iommu_snoop = 1; 1.16 +int iommu_qinval = 1; 1.17 +int iommu_intremap = 1; 1.18 int amd_iommu_debug; 1.19 int amd_iommu_perdev_intremap; 1.20 1.21 @@ -51,13 +51,6 @@ static void __init parse_iommu_param(cha 1.22 { 1.23 char *ss; 1.24 1.25 - iommu_enabled = 1; 1.26 - iommu_snoop = 1; 1.27 - iommu_qinval = 1; 1.28 - iommu_intremap = 1; 1.29 - amd_iommu_debug = 0; 1.30 - amd_iommu_perdev_intremap = 0; 1.31 - 1.32 do { 1.33 ss = strchr(s, ','); 1.34 if ( ss )
2.1 --- a/xen/drivers/passthrough/vtd/x86/vtd.c Tue Jan 19 10:56:59 2010 +0000 2.2 +++ b/xen/drivers/passthrough/vtd/x86/vtd.c Tue Jan 19 15:44:54 2010 +0000 2.3 @@ -31,7 +31,7 @@ 2.4 * iommu_inclusive_mapping: when set, all memory below 4GB is included in dom0 2.5 * 1:1 iommu mappings except xen and unusable regions. 2.6 */ 2.7 -static int iommu_inclusive_mapping; 2.8 +static int iommu_inclusive_mapping = 1; 2.9 boolean_param("iommu_inclusive_mapping", iommu_inclusive_mapping); 2.10 2.11 void *map_vtd_domain_page(u64 maddr)