Jaeyong Yoo
2013-Nov-06 03:45 UTC
[PATCH v5 2/6] xen/arm: Implement get_maximum_gpfn hypercall for arm
By using the memory map info in arch_domain (from set_memory_map hypercall)
implement get_maximum_gpfn hypercall.
Changes from v4: Use GUEST_RAM_BASE as the start physical address of guest
RAM. And, purge set-memory-map patch
Singed-off-by: Evgeny Fedotov <e.fedotov@samsung.com>
---
xen/arch/arm/mm.c | 22 +++++++++++++++++++++-
xen/include/asm-arm/mm.h | 2 ++
2 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
index 123280e..3801f07 100644
--- a/xen/arch/arm/mm.c
+++ b/xen/arch/arm/mm.c
@@ -927,7 +927,11 @@ int page_is_ram_type(unsigned long mfn, unsigned long
mem_type)
unsigned long domain_get_maximum_gpfn(struct domain *d)
{
- return -ENOSYS;
+ paddr_t end;
+
+ get_gma_start_end(d, NULL, &end);
+
+ return (unsigned long) (end >> PAGE_SHIFT);
}
void share_xen_page_with_guest(struct page_info *page,
@@ -1308,6 +1312,22 @@ int is_iomem_page(unsigned long mfn)
return 1;
return 0;
}
+
+/* Guest RAM base */
+#define GUEST_RAM_BASE 0x80000000
+/*
+ * XXX: Use correct definition for RAM base when the following patch
+ * xen: arm: 64-bit guest support and domU FDT autogeneration
+ * will be upstreamed.
+ */
+void get_gma_start_end(struct domain *d, paddr_t *start, paddr_t *end)
+{
+ if ( start )
+ *start = GUEST_RAM_BASE;
+ if ( end )
+ *end = GUEST_RAM_BASE + ((paddr_t) d->max_pages <<
PAGE_SHIFT);
+}
+
/*
* Local variables:
* mode: C
diff --git a/xen/include/asm-arm/mm.h b/xen/include/asm-arm/mm.h
index ce66099..c5cb3af 100644
--- a/xen/include/asm-arm/mm.h
+++ b/xen/include/asm-arm/mm.h
@@ -341,6 +341,8 @@ static inline void put_page_and_type(struct page_info
*page)
put_page(page);
}
+void get_gma_start_end(struct domain *d, paddr_t *start, paddr_t *end);
+
#endif /* __ARCH_ARM_MM__ */
/*
* Local variables:
--
1.8.1.2
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