disable cpu isolcpus

hc

2023-12-09 958e46acc8e900e8569dd467c1af9b8d2d019394

 kernel/arch/nds32/include/asm/highmem.h
..
..
@@ -1,13 +1,11 @@
1
-// SPDX-License-Identifier: GPL-2.0
1
+/* SPDX-License-Identifier: GPL-2.0 */
2
2
 // Copyright (C) 2005-2017 Andes Technology Corporation
3
3
 
4
4
 #ifndef _ASM_HIGHMEM_H
5
5
 #define _ASM_HIGHMEM_H
6
6
 
7
7
 #include <asm/proc-fns.h>
8
-#include <asm/kmap_types.h>
9
8
 #include <asm/fixmap.h>
10
-#include <asm/pgtable.h>
11
9
 
12
10
 /*
13
11
  * Right now we initialize only a single pte table. It can be extended
..
..
@@ -32,7 +30,6 @@
32
30
 #define LAST_PKMAP_MASK		(LAST_PKMAP - 1)
33
31
 #define PKMAP_NR(virt)		(((virt) - (PKMAP_BASE)) >> PAGE_SHIFT)
34
32
 #define PKMAP_ADDR(nr)		(PKMAP_BASE + ((nr) << PAGE_SHIFT))
35
-#define kmap_prot		PAGE_KERNEL
36
33
 
37
34
 static inline void flush_cache_kmaps(void)
38
35
 {
..
..
@@ -44,22 +41,25 @@
44
41
 
45
42
 extern pte_t *pkmap_page_table;
46
43
 
47
-extern void *kmap_high(struct page *page);
48
-extern void kunmap_high(struct page *page);
49
-
50
44
 extern void kmap_init(void);
51
45
 
52
46
 /*
53
- * The following functions are already defined by <linux/highmem.h>
54
- * when CONFIG_HIGHMEM is not set.
47
+ * FIXME: The below looks broken vs. a kmap_atomic() in task context which
48
+ * is interupted and another kmap_atomic() happens in interrupt context.
49
+ * But what do I know about nds32. -- tglx
55
50
  */
56
-#ifdef CONFIG_HIGHMEM
57
-extern void *kmap(struct page *page);
58
-extern void kunmap(struct page *page);
59
-extern void *kmap_atomic(struct page *page);
60
-extern void __kunmap_atomic(void *kvaddr);
61
-extern void *kmap_atomic_pfn(unsigned long pfn);
62
-extern struct page *kmap_atomic_to_page(void *ptr);
63
-#endif
51
+#define arch_kmap_local_post_map(vaddr, pteval)			\
52
+	do {							\
53
+		__nds32__tlbop_inv(vaddr);			\
54
+		__nds32__mtsr_dsb(vaddr, NDS32_SR_TLB_VPN);	\
55
+		__nds32__tlbop_rwr(pteval);			\
56
+		__nds32__isb();					\
57
+	} while (0)
58
+
59
+#define arch_kmap_local_pre_unmap(vaddr)			\
60
+	do {							\
61
+		__nds32__tlbop_inv(vaddr);			\
62
+		__nds32__isb();					\
63
+	} while (0)
64
64
 
65
65
 #endif