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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 13/15] xen/arm: Enable the compilation of mem_access and mem_event on ARM.
This patch sets up the infrastructure to support mem_access and mem_event
on ARM and turns on compilation. We define the required XSM functions.
Signed-off-by: Tamas K Lengyel <tklengyel@xxxxxxxxxxxxx>
---
v3: Wrap mem_event related functions in XSM into #ifdef HAS_MEM_ACCESS
blocks.
Update XSM hooks in flask to properly wire it up on ARM.
v2: Add CONFIG_MEM_PAGING and CONFIG_MEM_SHARING definitions and
use them instead of CONFIG_X86.
Split domctl copy-back and p2m type definitions into separate
patches and move this patch to the end of the series.
---
xen/arch/arm/Rules.mk | 1 +
xen/common/mem_event.c | 19 +++++++++++++++++++
xen/include/asm-arm/p2m.h | 11 +++++++++++
xen/include/asm-x86/config.h | 3 +++
xen/include/xsm/dummy.h | 26 ++++++++++++++------------
xen/include/xsm/xsm.h | 29 +++++++++++++++++------------
xen/xsm/dummy.c | 7 +++++--
xen/xsm/flask/hooks.c | 33 ++++++++++++++++++++-------------
8 files changed, 90 insertions(+), 39 deletions(-)
diff --git a/xen/arch/arm/Rules.mk b/xen/arch/arm/Rules.mk
index 8658176..f6781b5 100644
--- a/xen/arch/arm/Rules.mk
+++ b/xen/arch/arm/Rules.mk
@@ -10,6 +10,7 @@ HAS_DEVICE_TREE := y
HAS_VIDEO := y
HAS_ARM_HDLCD := y
HAS_PASSTHROUGH := y
+HAS_MEM_ACCESS := y
CFLAGS += -I$(BASEDIR)/include
diff --git a/xen/common/mem_event.c b/xen/common/mem_event.c
index 584de16..d9af98c 100644
--- a/xen/common/mem_event.c
+++ b/xen/common/mem_event.c
@@ -27,8 +27,15 @@
#include <asm/p2m.h>
#include <xen/mem_event.h>
#include <xen/mem_access.h>
+
+#ifdef CONFIG_MEM_PAGING
#include <asm/mem_paging.h>
+#endif
+
+#ifdef CONFIG_MEM_SHARING
#include <asm/mem_sharing.h>
+#endif
+
#include <xsm/xsm.h>
/* for public/io/ring.h macros */
@@ -423,12 +430,14 @@ int __mem_event_claim_slot(struct domain *d, struct
mem_event_domain *med,
return mem_event_grab_slot(med, (current->domain != d));
}
+#ifdef CONFIG_MEM_PAGING
/* Registered with Xen-bound event channel for incoming notifications. */
static void mem_paging_notification(struct vcpu *v, unsigned int port)
{
if ( likely(v->domain->mem_event->paging.ring_page != NULL) )
p2m_mem_paging_resume(v->domain);
}
+#endif
/* Registered with Xen-bound event channel for incoming notifications. */
static void mem_access_notification(struct vcpu *v, unsigned int port)
@@ -437,15 +446,20 @@ static void mem_access_notification(struct vcpu *v,
unsigned int port)
p2m_mem_access_resume(v->domain);
}
+#ifdef CONFIG_MEM_SHARING
/* Registered with Xen-bound event channel for incoming notifications. */
static void mem_sharing_notification(struct vcpu *v, unsigned int port)
{
if ( likely(v->domain->mem_event->share.ring_page != NULL) )
mem_sharing_sharing_resume(v->domain);
}
+#endif
int do_mem_event_op(int op, uint32_t domain, void *arg)
{
+#if !defined(CONFIG_MEM_PAGING) && !defined(CONFIG_MEM_SHARING)
+ return -ENOSYS;
+#else
int ret;
struct domain *d;
@@ -472,6 +486,7 @@ int do_mem_event_op(int op, uint32_t domain, void *arg)
out:
rcu_unlock_domain(d);
return ret;
+#endif
}
/* Clean up on domain destruction */
@@ -532,6 +547,7 @@ int mem_event_domctl(struct domain *d,
xen_domctl_mem_event_op_t *mec,
switch ( mec->mode )
{
+#ifdef CONFIG_MEM_PAGING
case XEN_DOMCTL_MEM_EVENT_OP_PAGING:
{
struct mem_event_domain *med = &d->mem_event->paging;
@@ -582,6 +598,7 @@ int mem_event_domctl(struct domain *d,
xen_domctl_mem_event_op_t *mec,
}
}
break;
+#endif
case XEN_DOMCTL_MEM_EVENT_OP_ACCESS:
{
@@ -618,6 +635,7 @@ int mem_event_domctl(struct domain *d,
xen_domctl_mem_event_op_t *mec,
}
break;
+#ifdef CONFIG_MEM_SHARING
case XEN_DOMCTL_MEM_EVENT_OP_SHARING:
{
struct mem_event_domain *med = &d->mem_event->share;
@@ -656,6 +674,7 @@ int mem_event_domctl(struct domain *d,
xen_domctl_mem_event_op_t *mec,
}
}
break;
+#endif
default:
rc = -ENOSYS;
diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h
index 2a9e0a3..e3056ea 100644
--- a/xen/include/asm-arm/p2m.h
+++ b/xen/include/asm-arm/p2m.h
@@ -236,6 +236,17 @@ static inline int get_page_and_type(struct page_info *page,
/* get host p2m table */
#define p2m_get_hostp2m(d) (&((d)->arch.p2m))
+/* mem_event and mem_access are supported on all ARM */
+static inline bool_t p2m_mem_access_sanity_check(struct domain *d)
+{
+ return 1;
+}
+
+static inline bool_t p2m_mem_event_sanity_check(struct domain *d)
+{
+ return 1;
+}
+
/* Send mem event based on the access (gla is -1ull if not available). Boolean
* return value indicates if trap needs to be injected into guest. */
int p2m_mem_access_check(paddr_t gpa, vaddr_t gla, struct npfec npfec);
diff --git a/xen/include/asm-x86/config.h b/xen/include/asm-x86/config.h
index 210ff57..525ac44 100644
--- a/xen/include/asm-x86/config.h
+++ b/xen/include/asm-x86/config.h
@@ -57,6 +57,9 @@
#define CONFIG_LATE_HWDOM 1
#endif
+#define CONFIG_MEM_SHARING 1
+#define CONFIG_MEM_PAGING 1
+
#define HZ 100
#define OPT_CONSOLE_STR "vga"
diff --git a/xen/include/xsm/dummy.h b/xen/include/xsm/dummy.h
index c5aa316..cea2e63 100644
--- a/xen/include/xsm/dummy.h
+++ b/xen/include/xsm/dummy.h
@@ -507,6 +507,20 @@ static XSM_INLINE int xsm_hvm_param_nested(XSM_DEFAULT_ARG
struct domain *d)
return xsm_default_action(action, current->domain, d);
}
+#ifdef HAS_MEM_ACCESS
+static XSM_INLINE int xsm_mem_event_control(XSM_DEFAULT_ARG struct domain *d,
int mode, int op)
+{
+ XSM_ASSERT_ACTION(XSM_PRIV);
+ return xsm_default_action(action, current->domain, d);
+}
+
+static XSM_INLINE int xsm_mem_event_op(XSM_DEFAULT_ARG struct domain *d, int
op)
+{
+ XSM_ASSERT_ACTION(XSM_DM_PRIV);
+ return xsm_default_action(action, current->domain, d);
+}
+#endif
+
#ifdef CONFIG_X86
static XSM_INLINE int xsm_do_mca(XSM_DEFAULT_VOID)
{
@@ -550,18 +564,6 @@ static XSM_INLINE int xsm_hvm_ioreq_server(XSM_DEFAULT_ARG
struct domain *d, int
return xsm_default_action(action, current->domain, d);
}
-static XSM_INLINE int xsm_mem_event_control(XSM_DEFAULT_ARG struct domain *d,
int mode, int op)
-{
- XSM_ASSERT_ACTION(XSM_PRIV);
- return xsm_default_action(action, current->domain, d);
-}
-
-static XSM_INLINE int xsm_mem_event_op(XSM_DEFAULT_ARG struct domain *d, int
op)
-{
- XSM_ASSERT_ACTION(XSM_DM_PRIV);
- return xsm_default_action(action, current->domain, d);
-}
-
static XSM_INLINE int xsm_mem_sharing_op(XSM_DEFAULT_ARG struct domain *d,
struct domain *cd, int op)
{
XSM_ASSERT_ACTION(XSM_DM_PRIV);
diff --git a/xen/include/xsm/xsm.h b/xen/include/xsm/xsm.h
index a85045d..6c3032c 100644
--- a/xen/include/xsm/xsm.h
+++ b/xen/include/xsm/xsm.h
@@ -140,6 +140,11 @@ struct xsm_operations {
int (*hvm_control) (struct domain *d, unsigned long op);
int (*hvm_param_nested) (struct domain *d);
+#ifdef HAS_MEM_ACCESS
+ int (*mem_event_control) (struct domain *d, int mode, int op);
+ int (*mem_event_op) (struct domain *d, int op);
+#endif
+
#ifdef CONFIG_X86
int (*do_mca) (void);
int (*shadow_control) (struct domain *d, uint32_t op);
@@ -148,8 +153,6 @@ struct xsm_operations {
int (*hvm_set_pci_link_route) (struct domain *d);
int (*hvm_inject_msi) (struct domain *d);
int (*hvm_ioreq_server) (struct domain *d, int op);
- int (*mem_event_control) (struct domain *d, int mode, int op);
- int (*mem_event_op) (struct domain *d, int op);
int (*mem_sharing_op) (struct domain *d, struct domain *cd, int op);
int (*apic) (struct domain *d, int cmd);
int (*memtype) (uint32_t access);
@@ -534,6 +537,18 @@ static inline int xsm_hvm_param_nested (xsm_default_t def,
struct domain *d)
return xsm_ops->hvm_param_nested(d);
}
+#ifdef HAS_MEM_ACCESS
+static inline int xsm_mem_event_control (xsm_default_t def, struct domain *d,
int mode, int op)
+{
+ return xsm_ops->mem_event_control(d, mode, op);
+}
+
+static inline int xsm_mem_event_op (xsm_default_t def, struct domain *d, int
op)
+{
+ return xsm_ops->mem_event_op(d, op);
+}
+#endif
+
#ifdef CONFIG_X86
static inline int xsm_do_mca(xsm_default_t def)
{
@@ -570,16 +585,6 @@ static inline int xsm_hvm_ioreq_server (xsm_default_t def,
struct domain *d, int
return xsm_ops->hvm_ioreq_server(d, op);
}
-static inline int xsm_mem_event_control (xsm_default_t def, struct domain *d,
int mode, int op)
-{
- return xsm_ops->mem_event_control(d, mode, op);
-}
-
-static inline int xsm_mem_event_op (xsm_default_t def, struct domain *d, int
op)
-{
- return xsm_ops->mem_event_op(d, op);
-}
-
static inline int xsm_mem_sharing_op (xsm_default_t def, struct domain *d,
struct domain *cd, int op)
{
return xsm_ops->mem_sharing_op(d, cd, op);
diff --git a/xen/xsm/dummy.c b/xen/xsm/dummy.c
index c95c803..e9cdc01 100644
--- a/xen/xsm/dummy.c
+++ b/xen/xsm/dummy.c
@@ -117,6 +117,11 @@ void xsm_fixup_ops (struct xsm_operations *ops)
set_to_dummy_if_null(ops, remove_from_physmap);
set_to_dummy_if_null(ops, map_gmfn_foreign);
+#ifdef HAS_MEM_ACCESS
+ set_to_dummy_if_null(ops, mem_event_control);
+ set_to_dummy_if_null(ops, mem_event_op);
+#endif
+
#ifdef CONFIG_X86
set_to_dummy_if_null(ops, do_mca);
set_to_dummy_if_null(ops, shadow_control);
@@ -125,8 +130,6 @@ void xsm_fixup_ops (struct xsm_operations *ops)
set_to_dummy_if_null(ops, hvm_set_pci_link_route);
set_to_dummy_if_null(ops, hvm_inject_msi);
set_to_dummy_if_null(ops, hvm_ioreq_server);
- set_to_dummy_if_null(ops, mem_event_control);
- set_to_dummy_if_null(ops, mem_event_op);
set_to_dummy_if_null(ops, mem_sharing_op);
set_to_dummy_if_null(ops, apic);
set_to_dummy_if_null(ops, platform_op);
diff --git a/xen/xsm/flask/hooks.c b/xen/xsm/flask/hooks.c
index f2f59ea..96efd0b 100644
--- a/xen/xsm/flask/hooks.c
+++ b/xen/xsm/flask/hooks.c
@@ -571,6 +571,9 @@ static int flask_domctl(struct domain *d, int cmd)
case XEN_DOMCTL_irq_permission:
case XEN_DOMCTL_iomem_permission:
case XEN_DOMCTL_set_target:
+#ifdef HAS_MEM_ACCESS
+ case XEN_DOMCTL_mem_event_op:
+#endif
#ifdef CONFIG_X86
/* These have individual XSM hooks (arch/x86/domctl.c) */
case XEN_DOMCTL_shadow_op:
@@ -579,7 +582,6 @@ static int flask_domctl(struct domain *d, int cmd)
case XEN_DOMCTL_unbind_pt_irq:
case XEN_DOMCTL_memory_mapping:
case XEN_DOMCTL_ioport_mapping:
- case XEN_DOMCTL_mem_event_op:
/* These have individual XSM hooks (drivers/passthrough/iommu.c) */
case XEN_DOMCTL_get_device_group:
case XEN_DOMCTL_test_assign_device:
@@ -1181,6 +1183,18 @@ static int flask_deassign_device(struct domain *d,
uint32_t machine_bdf)
}
#endif /* HAS_PASSTHROUGH && HAS_PCI */
+#ifdef HAS_MEM_ACCESS
+static int flask_mem_event_control(struct domain *d, int mode, int op)
+{
+ return current_has_perm(d, SECCLASS_HVM, HVM__MEM_EVENT);
+}
+
+static int flask_mem_event_op(struct domain *d, int op)
+{
+ return current_has_perm(d, SECCLASS_HVM, HVM__MEM_EVENT);
+}
+#endif /* HAS_MEM_ACCESS */
+
#ifdef CONFIG_X86
static int flask_do_mca(void)
{
@@ -1291,16 +1305,6 @@ static int flask_hvm_ioreq_server(struct domain *d, int
op)
return current_has_perm(d, SECCLASS_HVM, HVM__HVMCTL);
}
-static int flask_mem_event_control(struct domain *d, int mode, int op)
-{
- return current_has_perm(d, SECCLASS_HVM, HVM__MEM_EVENT);
-}
-
-static int flask_mem_event_op(struct domain *d, int op)
-{
- return current_has_perm(d, SECCLASS_HVM, HVM__MEM_EVENT);
-}
-
static int flask_mem_sharing_op(struct domain *d, struct domain *cd, int op)
{
int rc = current_has_perm(cd, SECCLASS_HVM, HVM__MEM_SHARING);
@@ -1567,6 +1571,11 @@ static struct xsm_operations flask_ops = {
.deassign_device = flask_deassign_device,
#endif
+#ifdef HAS_MEM_ACCESS
+ .mem_event_control = flask_mem_event_control,
+ .mem_event_op = flask_mem_event_op,
+#endif
+
#ifdef CONFIG_X86
.do_mca = flask_do_mca,
.shadow_control = flask_shadow_control,
@@ -1575,8 +1584,6 @@ static struct xsm_operations flask_ops = {
.hvm_set_pci_link_route = flask_hvm_set_pci_link_route,
.hvm_inject_msi = flask_hvm_inject_msi,
.hvm_ioreq_server = flask_hvm_ioreq_server,
- .mem_event_control = flask_mem_event_control,
- .mem_event_op = flask_mem_event_op,
.mem_sharing_op = flask_mem_sharing_op,
.apic = flask_apic,
.platform_op = flask_platform_op,
--
2.1.0.rc1
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