[Xen-changelog] [xen master] arm/lpae: Introduce lpae_is_page helper

[patchbot@xxxxxxx]

commit d33d5bcabf87744b9b39a9f97231acf1c6956849
Author:     Sergej Proskurin <proskurin@xxxxxxxxxxxxx>
AuthorDate: Wed Aug 16 15:17:34 2017 +0200
Commit:     Stefano Stabellini <sstabellini@xxxxxxxxxx>
CommitDate: Fri Aug 18 10:27:23 2017 -0700

    arm/lpae: Introduce lpae_is_page helper
    
    This commit introduces a new helper that checks whether the target PTE
    holds a page mapping or not. This helper will be used as part of the
    following commits.
    
    Signed-off-by: Sergej Proskurin <proskurin@xxxxxxxxxxxxx>
    Reviewed-by: Julien Grall <julien.grall@xxxxxxx>
    Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/include/asm-arm/lpae.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/xen/include/asm-arm/lpae.h b/xen/include/asm-arm/lpae.h
index efec493..118ee5a 100644
--- a/xen/include/asm-arm/lpae.h
+++ b/xen/include/asm-arm/lpae.h
@@ -153,6 +153,11 @@ static inline bool lpae_is_superpage(lpae_t pte, unsigned 
int level)
     return (level < 3) && lpae_mapping(pte);
 }
 
+static inline bool lpae_is_page(lpae_t pte, unsigned int level)
+{
+    return (level == 3) && lpae_valid(pte) && pte.walk.table;
+}
+
 /*
  * AArch64 supports pages with different sizes (4K, 16K, and 64K). To enable
  * page table walks for various configurations, the following helpers enable
--
generated by git-patchbot for /home/xen/git/xen.git#master

_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxx
https://lists.xenproject.org/xen-changelog