diff options
Diffstat (limited to 'src/include/ipxe/linux/linux_uaccess.h')
| -rw-r--r-- | src/include/ipxe/linux/linux_uaccess.h | 34 |
1 files changed, 16 insertions, 18 deletions
diff --git a/src/include/ipxe/linux/linux_uaccess.h b/src/include/ipxe/linux/linux_uaccess.h index 4b1257b1e..b4f7e2fc6 100644 --- a/src/include/ipxe/linux/linux_uaccess.h +++ b/src/include/ipxe/linux/linux_uaccess.h @@ -10,10 +10,9 @@ * * We have no concept of the underlying physical addresses, since * these are not exposed to userspace. We provide a stub - * implementation of user_to_phys() since this is required by - * alloc_memblock(). We provide no implementation of phys_to_user(); - * any code attempting to access physical addresses will therefore - * (correctly) fail to link. + * implementation of virt_to_phys() since this is required by + * alloc_memblock(). We provide a matching stub implementation of + * phys_to_virt(). */ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); @@ -25,14 +24,13 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #endif /** - * Convert user pointer to physical address + * Convert virtual address to physical address * - * @v userptr User pointer - * @v offset Offset from user pointer - * @ret phys_addr Physical address + * @v virt Virtual address + * @ret phys Physical address */ -static inline __always_inline unsigned long -UACCESS_INLINE ( linux, user_to_phys ) ( userptr_t userptr, off_t offset ) { +static inline __always_inline physaddr_t +UACCESS_INLINE ( linux, virt_to_phys ) ( volatile const void *virt ) { /* We do not know the real underlying physical address. We * provide this stub implementation only because it is @@ -43,20 +41,20 @@ UACCESS_INLINE ( linux, user_to_phys ) ( userptr_t userptr, off_t offset ) { * virtual address will suffice for the purpose of determining * alignment. */ - return ( ( unsigned long ) ( userptr + offset ) ); + return ( ( physaddr_t ) virt ); } /** - * Convert physical address to user pointer + * Convert physical address to virtual address * - * @v phys_addr Physical address - * @ret userptr User pointer + * @v phys Physical address + * @ret virt Virtual address */ -static inline __always_inline userptr_t -UACCESS_INLINE ( linux, phys_to_user ) ( physaddr_t phys_addr ) { +static inline __always_inline void * +UACCESS_INLINE ( linux, phys_to_virt ) ( physaddr_t phys ) { - /* For symmetry with the stub user_to_phys() */ - return ( ( userptr_t ) phys_addr ); + /* For symmetry with the stub virt_to_phys() */ + return ( ( void * ) phys ); } static inline __always_inline userptr_t |