diff options
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/memory.h | 21 | ||||
| -rw-r--r-- | arch/arm/include/asm/module.h | 4 |
2 files changed, 21 insertions, 4 deletions
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index 7197879e1cb7..2398b3fc0268 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -154,29 +154,42 @@ #ifndef __virt_to_phys #ifdef CONFIG_ARM_PATCH_PHYS_VIRT +/* + * Constants used to force the right instruction encodings and shifts + * so that all we need to do is modify the 8-bit constant field. + */ +#define __PV_BITS_31_24 0x81000000 +#define __PV_BITS_23_16 0x00810000 + extern unsigned long __pv_phys_offset; #define PHYS_OFFSET __pv_phys_offset -#define __pv_stub(from,to,instr) \ +#define __pv_stub(from,to,instr,type) \ __asm__("@ __pv_stub\n" \ "1: " instr " %0, %1, %2\n" \ " .pushsection .pv_table,\"a\"\n" \ " .long 1b\n" \ " .popsection\n" \ : "=r" (to) \ - : "r" (from), "I" (0x81000000)) + : "r" (from), "I" (type)) static inline unsigned long __virt_to_phys(unsigned long x) { unsigned long t; - __pv_stub(x, t, "add"); + __pv_stub(x, t, "add", __PV_BITS_31_24); +#ifdef CONFIG_ARM_PATCH_PHYS_VIRT_16BIT + __pv_stub(t, t, "add", __PV_BITS_23_16); +#endif return t; } static inline unsigned long __phys_to_virt(unsigned long x) { unsigned long t; - __pv_stub(x, t, "sub"); + __pv_stub(x, t, "sub", __PV_BITS_31_24); +#ifdef CONFIG_ARM_PATCH_PHYS_VIRT_16BIT + __pv_stub(t, t, "sub", __PV_BITS_23_16); +#endif return t; } #else diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h index d072c21332ee..a2b775b81cfa 100644 --- a/arch/arm/include/asm/module.h +++ b/arch/arm/include/asm/module.h @@ -31,7 +31,11 @@ struct mod_arch_specific { /* Add __virt_to_phys patching state as well */ #ifdef CONFIG_ARM_PATCH_PHYS_VIRT +#ifdef CONFIG_ARM_PATCH_PHYS_VIRT_16BIT +#define MODULE_ARCH_VERMAGIC_P2V "p2v16 " +#else #define MODULE_ARCH_VERMAGIC_P2V "p2v8 " +#endif #else #define MODULE_ARCH_VERMAGIC_P2V "" #endif |