kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/arch/nds32/include/asm/highmem.h
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@@ -5,6 +5,7 @@
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 #define _ASM_HIGHMEM_H
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 #include <asm/proc-fns.h>
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+#include <asm/kmap_types.h>
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 #include <asm/fixmap.h>
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 /*
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@@ -44,22 +45,11 @@
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 extern void kmap_init(void);
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 /*
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- * FIXME: The below looks broken vs. a kmap_atomic() in task context which
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- * is interupted and another kmap_atomic() happens in interrupt context.
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- * But what do I know about nds32. -- tglx
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+ * The following functions are already defined by <linux/highmem.h>
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+ * when CONFIG_HIGHMEM is not set.
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  */
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-#define arch_kmap_local_post_map(vaddr, pteval)			\
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-	do {							\
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-		__nds32__tlbop_inv(vaddr);			\
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-		__nds32__mtsr_dsb(vaddr, NDS32_SR_TLB_VPN);	\
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-		__nds32__tlbop_rwr(pteval);			\
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-		__nds32__isb();					\
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-	} while (0)
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-
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-#define arch_kmap_local_pre_unmap(vaddr)			\
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-	do {							\
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-		__nds32__tlbop_inv(vaddr);			\
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-		__nds32__isb();					\
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-	} while (0)
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+#ifdef CONFIG_HIGHMEM
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+extern void *kmap_atomic_pfn(unsigned long pfn);
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+#endif
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 #endif