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 <prosku...@sec.in.tum.de>
Reviewed-by: Julien Grall <julien.gr...@arm.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Julien Grall <julien.gr...@arm.com>
---
v6: Change the name of the lpae_page helper to lpae_is_page.
Add Julien Grall's Reviewed-by.
---
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 f0b3d21aa7..bad401baea 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;
+}
+
/*
* The ARMv8 architecture supports pages with different sizes (4K, 16K, and
* 64K). To enable page table walks for various configurations, the following
--
2.13.2
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