From: Julien Grall Date: Mon, 16 Jul 2018 17:27:06 +0000 (+0100) Subject: xen/arm: guest_walk: Use lpae_is_mapping to simplify the code X-Git-Tag: archive/raspbian/4.14.0+80-gd101b417b7-1+rpi1^2~63^2~3410 X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=bb126eaf2c9d12a2368162e7aa27313c2ddc6fe8;p=xen.git xen/arm: guest_walk: Use lpae_is_mapping to simplify the code !lpae_is_page(pte, level) && !lpae_is_superpage(pte, level) is equivalent to !lpae_is_mapping(pte, level). At the same time drop lpae_is_page(pte, level) that is now unused. Signed-off-by: Julien Grall Reviewed-by: Stefano Stabellini --- diff --git a/xen/arch/arm/guest_walk.c b/xen/arch/arm/guest_walk.c index a7c7e05603..e3e21bdad3 100644 --- a/xen/arch/arm/guest_walk.c +++ b/xen/arch/arm/guest_walk.c @@ -566,7 +566,7 @@ static int guest_walk_ld(const struct vcpu *v, * PTE is invalid or holds a reserved entry (PTE<1:0> == x0)) or if the PTE * maps a memory block at level 3 (PTE<1:0> == 01). */ - if ( !lpae_is_page(pte, level) && !lpae_is_superpage(pte, level) ) + if ( !lpae_is_mapping(pte, level) ) return -EFAULT; /* Make sure that the lower bits of the PTE's base address are zero. */ diff --git a/xen/include/asm-arm/lpae.h b/xen/include/asm-arm/lpae.h index 1d86020d07..15595cd35c 100644 --- a/xen/include/asm-arm/lpae.h +++ b/xen/include/asm-arm/lpae.h @@ -153,11 +153,6 @@ static inline bool lpae_is_superpage(lpae_t pte, unsigned int level) return (level < 3) && lpae_is_mapping(pte, level); } -static inline bool lpae_is_page(lpae_t pte, unsigned int level) -{ - return (level == 3) && lpae_is_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