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- // SPDX-License-Identifier: GPL-2.0
- #include <linux/types.h>
- #include <linux/mmdebug.h>
- #include <linux/mm.h>
- #include <asm/page.h>
- #include <asm/sections.h>
- phys_addr_t __virt_to_phys(unsigned long x)
- {
- phys_addr_t y = x - PAGE_OFFSET;
- /*
- * Boundary checking aginst the kernel linear mapping space.
- */
- WARN(y >= KERN_VIRT_SIZE,
- "virt_to_phys used for non-linear address: %pK (%pS)\n",
- (void *)x, (void *)x);
- return __va_to_pa_nodebug(x);
- }
- EXPORT_SYMBOL(__virt_to_phys);
- phys_addr_t __phys_addr_symbol(unsigned long x)
- {
- unsigned long kernel_start = (unsigned long)PAGE_OFFSET;
- unsigned long kernel_end = (unsigned long)_end;
- /*
- * Boundary checking aginst the kernel image mapping.
- * __pa_symbol should only be used on kernel symbol addresses.
- */
- VIRTUAL_BUG_ON(x < kernel_start || x > kernel_end);
- return __va_to_pa_nodebug(x);
- }
- EXPORT_SYMBOL(__phys_addr_symbol);
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