[PATCH v3 19/52] xen/arm: switch to use ioremap_xxx in common file

[Penny Zheng <Penny.Zheng@xxxxxxx>]

In arm, with the introduction of MPU system, VMAP scheme, taking
advantage of virtual translation, will become a MMU-only feature.
So we want to avoid using direct access to all vmap-related functions,
like __vmap(), in common files, and switch to use more generic eoremap_xxx
instead.
Then later, we also just need to implement MPU version of ioremap_xxx.

Signed-off-by: Penny Zheng <penny.zheng@xxxxxxx>
Signed-off-by: Wei Chen <wei.chen@xxxxxxx>
---
v3:
- new commit
---
 xen/arch/arm/kernel.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/xen/arch/arm/kernel.c b/xen/arch/arm/kernel.c
index d13ef0330b..30f8bc5923 100644
--- a/xen/arch/arm/kernel.c
+++ b/xen/arch/arm/kernel.c
@@ -172,7 +172,6 @@ static __init int kernel_decompress(struct bootmodule *mod, 
uint32_t offset)
     unsigned int kernel_order_out;
     paddr_t output_size;
     struct page_info *pages;
-    mfn_t mfn;
     int i;
     paddr_t addr = mod->start;
     paddr_t size = mod->size;
@@ -209,13 +208,18 @@ static __init int kernel_decompress(struct bootmodule 
*mod, uint32_t offset)
         iounmap(input);
         return -ENOMEM;
     }
-    mfn = page_to_mfn(pages);
-    output = __vmap(&mfn, 1 << kernel_order_out, 1, 1, PAGE_HYPERVISOR, 
VMAP_DEFAULT);
+    output = ioremap_cache(page_to_maddr(pages),
+                           pfn_to_paddr(1UL << kernel_order_out));
+    if ( output == NULL )
+    {
+        iounmap(output);
+        return -EFAULT;
+    }
 
     rc = perform_gunzip(output, input, size);
     clean_dcache_va_range(output, output_size);
     iounmap(input);
-    vunmap(output);
+    iounmap(output);
 
     if ( rc )
     {
-- 
2.25.1