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-rw-r--r--arch/arm/xen/enlighten.c6
-rw-r--r--arch/arm/xen/grant-table.c6
-rw-r--r--arch/x86/xen/enlighten.c13
-rw-r--r--arch/x86/xen/grant-table.c60
-rw-r--r--arch/x86/xen/p2m.c5
5 files changed, 24 insertions, 66 deletions
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 1e632430570b..98544c5f86e9 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -181,8 +181,7 @@ static void xen_restart(enum reboot_mode reboot_mode, const char *cmd)
struct sched_shutdown r = { .reason = SHUTDOWN_reboot };
int rc;
rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
- if (rc)
- BUG();
+ BUG_ON(rc);
}
static void xen_power_off(void)
@@ -190,8 +189,7 @@ static void xen_power_off(void)
struct sched_shutdown r = { .reason = SHUTDOWN_poweroff };
int rc;
rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
- if (rc)
- BUG();
+ BUG_ON(rc);
}
static int xen_cpu_notification(struct notifier_block *self,
diff --git a/arch/arm/xen/grant-table.c b/arch/arm/xen/grant-table.c
index 91cf08ba1e95..2c4041c9bac5 100644
--- a/arch/arm/xen/grant-table.c
+++ b/arch/arm/xen/grant-table.c
@@ -45,11 +45,9 @@ void arch_gnttab_unmap(void *shared, unsigned long nr_gframes)
return;
}
-int arch_gnttab_map_status(uint64_t *frames, unsigned long nr_gframes,
- unsigned long max_nr_gframes,
- grant_status_t **__shared)
+int arch_gnttab_init(unsigned long nr_shared)
{
- return -ENOSYS;
+ return 0;
}
int arch_gnttab_init(unsigned long nr_shared, unsigned long nr_status)
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 94813515fdd6..c0cb11fb5008 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1828,8 +1828,19 @@ static void __init xen_hvm_guest_init(void)
xen_hvm_init_mmu_ops();
}
+static bool xen_nopv = false;
+static __init int xen_parse_nopv(char *arg)
+{
+ xen_nopv = true;
+ return 0;
+}
+early_param("xen_nopv", xen_parse_nopv);
+
static uint32_t __init xen_hvm_platform(void)
{
+ if (xen_nopv)
+ return 0;
+
if (xen_pv_domain())
return 0;
@@ -1838,6 +1849,8 @@ static uint32_t __init xen_hvm_platform(void)
bool xen_hvm_need_lapic(void)
{
+ if (xen_nopv)
+ return false;
if (xen_pv_domain())
return false;
if (!xen_hvm_domain())
diff --git a/arch/x86/xen/grant-table.c b/arch/x86/xen/grant-table.c
index ebfa9b2c871d..c0413046483a 100644
--- a/arch/x86/xen/grant-table.c
+++ b/arch/x86/xen/grant-table.c
@@ -49,7 +49,7 @@
static struct gnttab_vm_area {
struct vm_struct *area;
pte_t **ptes;
-} gnttab_shared_vm_area, gnttab_status_vm_area;
+} gnttab_shared_vm_area;
int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
unsigned long max_nr_gframes,
@@ -73,43 +73,16 @@ int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
return 0;
}
-int arch_gnttab_map_status(uint64_t *frames, unsigned long nr_gframes,
- unsigned long max_nr_gframes,
- grant_status_t **__shared)
-{
- grant_status_t *shared = *__shared;
- unsigned long addr;
- unsigned long i;
-
- if (shared == NULL)
- *__shared = shared = gnttab_status_vm_area.area->addr;
-
- addr = (unsigned long)shared;
-
- for (i = 0; i < nr_gframes; i++) {
- set_pte_at(&init_mm, addr, gnttab_status_vm_area.ptes[i],
- mfn_pte(frames[i], PAGE_KERNEL));
- addr += PAGE_SIZE;
- }
-
- return 0;
-}
-
void arch_gnttab_unmap(void *shared, unsigned long nr_gframes)
{
- pte_t **ptes;
unsigned long addr;
unsigned long i;
- if (shared == gnttab_status_vm_area.area->addr)
- ptes = gnttab_status_vm_area.ptes;
- else
- ptes = gnttab_shared_vm_area.ptes;
-
addr = (unsigned long)shared;
for (i = 0; i < nr_gframes; i++) {
- set_pte_at(&init_mm, addr, ptes[i], __pte(0));
+ set_pte_at(&init_mm, addr, gnttab_shared_vm_area.ptes[i],
+ __pte(0));
addr += PAGE_SIZE;
}
}
@@ -129,35 +102,12 @@ static int arch_gnttab_valloc(struct gnttab_vm_area *area, unsigned nr_frames)
return 0;
}
-static void arch_gnttab_vfree(struct gnttab_vm_area *area)
+int arch_gnttab_init(unsigned long nr_shared)
{
- free_vm_area(area->area);
- kfree(area->ptes);
-}
-
-int arch_gnttab_init(unsigned long nr_shared, unsigned long nr_status)
-{
- int ret;
-
if (!xen_pv_domain())
return 0;
- ret = arch_gnttab_valloc(&gnttab_shared_vm_area, nr_shared);
- if (ret < 0)
- return ret;
-
- /*
- * Always allocate the space for the status frames in case
- * we're migrated to a host with V2 support.
- */
- ret = arch_gnttab_valloc(&gnttab_status_vm_area, nr_status);
- if (ret < 0)
- goto err;
-
- return 0;
- err:
- arch_gnttab_vfree(&gnttab_shared_vm_area);
- return -ENOMEM;
+ return arch_gnttab_valloc(&gnttab_shared_vm_area, nr_shared);
}
#ifdef CONFIG_XEN_PVH
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 9bb3d82ffec8..3172692381ae 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -841,10 +841,9 @@ unsigned long __init set_phys_range_identity(unsigned long pfn_s,
pfn = ALIGN(pfn, P2M_PER_PAGE);
}
- if (!WARN((pfn - pfn_s) != (pfn_e - pfn_s),
+ WARN((pfn - pfn_s) != (pfn_e - pfn_s),
"Identity mapping failed. We are %ld short of 1-1 mappings!\n",
- (pfn_e - pfn_s) - (pfn - pfn_s)))
- printk(KERN_DEBUG "1-1 mapping on %lx->%lx\n", pfn_s, pfn);
+ (pfn_e - pfn_s) - (pfn - pfn_s));
return pfn - pfn_s;
}