The current implementation does not provide appropriate types for short-descriptor translation table entries. As such, this commit adds new types, which simplify managing the respective translation table entries.
Signed-off-by: Sergej Proskurin <prosku...@sec.in.tum.de> --- Cc: Stefano Stabellini <sstabell...@kernel.org> Cc: Julien Grall <julien.gr...@arm.com> --- xen/include/asm-arm/page.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/xen/include/asm-arm/page.h b/xen/include/asm-arm/page.h index 6222b1d4a2..5ea97ba95b 100644 --- a/xen/include/asm-arm/page.h +++ b/xen/include/asm-arm/page.h @@ -205,6 +205,25 @@ typedef union { lpae_walk_t walk; } lpae_t; +/* + * Comprises the bits required to walk page tables adhering to the + * short-descriptor translation table format. + */ +typedef struct __packed { + unsigned int dt:2; /* Descriptor type */ + unsigned int pad1:8; + unsigned int base:22; /* Base address of block or next table */ +} pte_sd_walk_t; + +/* + * Represents page table entries adhering to the short-descriptor translation + * table format. + */ +typedef union { + uint32_t bits; + pte_sd_walk_t walk; +} pte_sd_t; + /* Standard entry type that we'll use to build Xen's own pagetables. * We put the same permissions at every level, because they're ignored * by the walker in non-leaf entries. */ -- 2.12.2 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel