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riscv: mm: Add pfn_to_kaddr() implementation

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The pfn_to_kaddr() function is used by KASAN's memory hotplugging
path. Add the missing function to the RISC-V port, so that it can be
built with MHP and CONFIG_KASAN.

Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240605114100.315918-6-bjorn@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Björn Töpel 2024-06-05 13:40:48 +02:00 committed by Palmer Dabbelt
parent 007480fe84
commit 6e6c5e21b8
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1 changed files with 5 additions and 0 deletions
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5
arch/riscv/include/asm/page.h
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@ -188,6 +188,11 @@ extern phys_addr_t __phys_addr_symbol(unsigned long x);
unsigned long kaslr_offset(void);
static __always_inline void *pfn_to_kaddr(unsigned long pfn)
{
return __va(pfn << PAGE_SHIFT);
}
#endif /* __ASSEMBLY__ */
#define virt_addr_valid(vaddr) ({ \