[Xen-changelog] [xen staging] xen/domain: Introduce a new arch_sanitise_domain_config() helper

[p***@xen.org]

commit 78eb62977bf4d98b06bb80ad1739061dfa1c1414
Author: Andrew Cooper <***@citrix.com>
AuthorDate: Tue Oct 2 15:02:55 2018 +0100
Commit: Andrew Cooper <***@citrix.com>
CommitDate: Thu Nov 15 11:11:30 2018 +0000

xen/domain: Introduce a new arch_sanitise_domain_config() helper

On the ARM side, lift the code to select the appropriate GIC version when
NATIVE is requested.

Signed-off-by: Andrew Cooper <***@citrix.com>
Acked-by: Jan Beulich <***@suse.com>
Reviewed-by: Julien Grall <***@arm.com>
---
xen/arch/arm/domain.c | 45 +++++++++++++++++++++++++--------------------
xen/arch/x86/domain.c | 5 +++++
xen/common/domain.c | 2 +-
xen/include/xen/sched.h | 6 ++++++
4 files changed, 37 insertions(+), 21 deletions(-)

diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c
index 80432872d6..c24ace69d0 100644
--- a/xen/arch/arm/domain.c
+++ b/xen/arch/arm/domain.c
@@ -599,6 +599,30 @@ void vcpu_switch_to_aarch64_mode(struct vcpu *v)
v->arch.hcr_el2 |= HCR_RW;
}

+int arch_sanitise_domain_config(struct xen_domctl_createdomain *config)
+{
+ /* Fill in the native GIC version, passed back to the toolstack. */
+ if ( config->arch.gic_version == XEN_DOMCTL_CONFIG_GIC_NATIVE )
+ {
+ switch ( gic_hw_version() )
+ {
+ case GIC_V2:
+ config->arch.gic_version = XEN_DOMCTL_CONFIG_GIC_V2;
+ break;
+
+ case GIC_V3:
+ config->arch.gic_version = XEN_DOMCTL_CONFIG_GIC_V3;
+ break;
+
+ default:
+ ASSERT_UNREACHABLE();
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
int arch_domain_create(struct domain *d,
struct xen_domctl_createdomain *config)
{
@@ -629,24 +653,6 @@ int arch_domain_create(struct domain *d,

switch ( config->arch.gic_version )
{
- case XEN_DOMCTL_CONFIG_GIC_NATIVE:
- switch ( gic_hw_version () )
- {
- case GIC_V2:
- config->arch.gic_version = XEN_DOMCTL_CONFIG_GIC_V2;
- d->arch.vgic.version = GIC_V2;
- break;
-
- case GIC_V3:
- config->arch.gic_version = XEN_DOMCTL_CONFIG_GIC_V3;
- d->arch.vgic.version = GIC_V3;
- break;
-
- default:
- BUG();
- }
- break;
-
case XEN_DOMCTL_CONFIG_GIC_V2:
d->arch.vgic.version = GIC_V2;
break;
@@ -656,8 +662,7 @@ int arch_domain_create(struct domain *d,
break;

default:
- rc = -EOPNOTSUPP;
- goto fail;
+ BUG();
}

if ( (rc = domain_vgic_register(d, &count)) != 0 )
diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index f6fe954313..28a145a300 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -418,6 +418,11 @@ void arch_vcpu_destroy(struct vcpu *v)
pv_vcpu_destroy(v);
}

+int arch_sanitise_domain_config(struct xen_domctl_createdomain *config)
+{
+ return 0;
+}
+
static bool emulation_flags_ok(const struct domain *d, uint32_t emflags)
{
#ifdef CONFIG_HVM
diff --git a/xen/common/domain.c b/xen/common/domain.c
index 22aa634510..ddaf74aaa9 100644
--- a/xen/common/domain.c
+++ b/xen/common/domain.c
@@ -300,7 +300,7 @@ static int sanitise_domain_config(struct xen_domctl_createdomain *config)
return -EINVAL;
}

- return 0;
+ return arch_sanitise_domain_config(config);
}

struct domain *domain_create(domid_t domid,
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index 7e51a39358..0309c1f2a0 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -541,6 +541,12 @@ int domain_set_node_affinity(struct domain *d, const nodemask_t *affinity);
void domain_update_node_affinity(struct domain *d);

/*
+ * To be implemented by each architecture, sanity checking the configuration
+ * and filling in any appropriate defaults.
+ */
+int arch_sanitise_domain_config(struct xen_domctl_createdomain *config);
+
+/*
* Create a domain: the configuration is only necessary for real domain
* (domid < DOMID_FIRST_RESERVED).
*/
--
generated by git-patchbot for /home/xen/git/xen.git#staging