LoongArch: Don't inline kasan_mem_to_shadow()/kasan_shadow_to_mem()

[platform/kernel/linux-rpi.git] / arch / loongarch / mm / kasan_init.c

diff --git a/arch/loongarch/mm/kasan_init.c b/arch/loongarch/mm/kasan_init.c
index da68bc1..cc3e81f 100644 (file)
--- a/arch/loongarch/mm/kasan_init.c
+++ b/arch/loongarch/mm/kasan_init.c
@@ -35,6 +35,57 @@ static pgd_t kasan_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE);
 
 bool kasan_early_stage = true;
 
+void *kasan_mem_to_shadow(const void *addr)
+{
+       if (!kasan_arch_is_ready()) {
+               return (void *)(kasan_early_shadow_page);
+       } else {
+               unsigned long maddr = (unsigned long)addr;
+               unsigned long xrange = (maddr >> XRANGE_SHIFT) & 0xffff;
+               unsigned long offset = 0;
+
+               maddr &= XRANGE_SHADOW_MASK;
+               switch (xrange) {
+               case XKPRANGE_CC_SEG:
+                       offset = XKPRANGE_CC_SHADOW_OFFSET;
+                       break;
+               case XKPRANGE_UC_SEG:
+                       offset = XKPRANGE_UC_SHADOW_OFFSET;
+                       break;
+               case XKVRANGE_VC_SEG:
+                       offset = XKVRANGE_VC_SHADOW_OFFSET;
+                       break;
+               default:
+                       WARN_ON(1);
+                       return NULL;
+               }
+
+               return (void *)((maddr >> KASAN_SHADOW_SCALE_SHIFT) + offset);
+       }
+}
+
+const void *kasan_shadow_to_mem(const void *shadow_addr)
+{
+       unsigned long addr = (unsigned long)shadow_addr;
+
+       if (unlikely(addr > KASAN_SHADOW_END) ||
+               unlikely(addr < KASAN_SHADOW_START)) {
+               WARN_ON(1);
+               return NULL;
+       }
+
+       if (addr >= XKVRANGE_VC_SHADOW_OFFSET)
+               return (void *)(((addr - XKVRANGE_VC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKVRANGE_VC_START);
+       else if (addr >= XKPRANGE_UC_SHADOW_OFFSET)
+               return (void *)(((addr - XKPRANGE_UC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKPRANGE_UC_START);
+       else if (addr >= XKPRANGE_CC_SHADOW_OFFSET)
+               return (void *)(((addr - XKPRANGE_CC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKPRANGE_CC_START);
+       else {
+               WARN_ON(1);
+               return NULL;
+       }
+}
+
 /*
  * Alloc memory for shadow memory page table.
  */