[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH V3 3/4] arm: add build time asserts for various virtual address aligment constraints
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx> Acked-by: Tim Deegan <tim@xxxxxxx> --- Not totally sold on the need for this, but I guess it is harmless enough... --- xen/arch/arm/mm.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index 3cb852b..656aa82 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -74,6 +74,17 @@ unsigned long total_pages; extern char __init_begin[], __init_end[]; +/* Checking VA memory layout alignment. */ +static inline void check_memory_layout_alignment_constraints(void) { + /* 2MB aligned regions */ + BUILD_BUG_ON(XEN_VIRT_START & ~SECOND_MASK); + BUILD_BUG_ON(FIXMAP_ADDR(0) & ~SECOND_MASK); + BUILD_BUG_ON(BOOT_MISC_VIRT_START & ~SECOND_MASK); + /* 1GB aligned regions */ + BUILD_BUG_ON(XENHEAP_VIRT_START & ~FIRST_MASK); + BUILD_BUG_ON(DOMHEAP_VIRT_START & ~FIRST_MASK); +} + void dump_pt_walk(lpae_t *first, paddr_t addr) { lpae_t *second = NULL, *third = NULL; -- 1.7.2.5 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |