xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

xen: introduce xen_remap, use it instead of ioremap

Browse Source 
ioremap can't be used to map ring pages on ARM because it uses device
memory caching attributes (MT_DEVICE*).

Introduce a Xen specific abstraction to map ring pages, called
xen_remap, that is defined as ioremap on x86 (no behavioral changes).
On ARM it explicitly calls __arm_ioremap with the right caching
attributes: MT_MEMORY.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Stefano Stabellini
2013-02-19 13:59:19 +00:00
committed by Konrad Rzeszutek Wilk
parent e7e44e4448
commit 3216dceb31
5 changed files with 9 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/xen/page.h
View File

@@ -212,4 +212,6 @@ unsigned long arbitrary_virt_to_mfn(void *vaddr);
void make_lowmem_page_readonly(void *vaddr);
void make_lowmem_page_readwrite(void *vaddr);
#define xen_remap(cookie, size) ioremap((cookie), (size));
#endif /* _ASM_X86_XEN_PAGE_H */