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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 = kernel_map.virt_addr;
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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