Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/arch/mips/mm/highmem.c b/arch/mips/mm/highmem.c
index d08e6d7..5fec7f4 100644
--- a/arch/mips/mm/highmem.c
+++ b/arch/mips/mm/highmem.c
@@ -12,71 +12,37 @@
unsigned long highstart_pfn, highend_pfn;
-void *kmap(struct page *page)
+void kmap_flush_tlb(unsigned long addr)
{
- void *addr;
-
- might_sleep();
- if (!PageHighMem(page))
- return page_address(page);
- addr = kmap_high(page);
- flush_tlb_one((unsigned long)addr);
-
- return addr;
+ flush_tlb_one(addr);
}
-EXPORT_SYMBOL(kmap);
+EXPORT_SYMBOL(kmap_flush_tlb);
-void kunmap(struct page *page)
-{
- BUG_ON(in_interrupt());
- if (!PageHighMem(page))
- return;
- kunmap_high(page);
-}
-EXPORT_SYMBOL(kunmap);
-
-/*
- * kmap_atomic/kunmap_atomic is significantly faster than kmap/kunmap because
- * no global lock is needed and because the kmap code must perform a global TLB
- * invalidation when the kmap pool wraps.
- *
- * However when holding an atomic kmap is is not legal to sleep, so atomic
- * kmaps are appropriate for short, tight code paths only.
- */
-
-void *kmap_atomic(struct page *page)
+void *kmap_atomic_high_prot(struct page *page, pgprot_t prot)
{
unsigned long vaddr;
int idx, type;
- preempt_disable();
- pagefault_disable();
- if (!PageHighMem(page))
- return page_address(page);
-
type = kmap_atomic_idx_push();
idx = type + KM_TYPE_NR*smp_processor_id();
vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
#ifdef CONFIG_DEBUG_HIGHMEM
BUG_ON(!pte_none(*(kmap_pte - idx)));
#endif
- set_pte(kmap_pte-idx, mk_pte(page, PAGE_KERNEL));
+ set_pte(kmap_pte-idx, mk_pte(page, prot));
local_flush_tlb_one((unsigned long)vaddr);
return (void*) vaddr;
}
-EXPORT_SYMBOL(kmap_atomic);
+EXPORT_SYMBOL(kmap_atomic_high_prot);
-void __kunmap_atomic(void *kvaddr)
+void kunmap_atomic_high(void *kvaddr)
{
unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
int type __maybe_unused;
- if (vaddr < FIXADDR_START) { // FIXME
- pagefault_enable();
- preempt_enable();
+ if (vaddr < FIXADDR_START)
return;
- }
type = kmap_atomic_idx();
#ifdef CONFIG_DEBUG_HIGHMEM
@@ -94,10 +60,8 @@
}
#endif
kmap_atomic_idx_pop();
- pagefault_enable();
- preempt_enable();
}
-EXPORT_SYMBOL(__kunmap_atomic);
+EXPORT_SYMBOL(kunmap_atomic_high);
/*
* This is the same as kmap_atomic() but can map memory that doesn't
@@ -126,5 +90,5 @@
/* cache the first kmap pte */
kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN);
- kmap_pte = kmap_get_fixmap_pte(kmap_vstart);
+ kmap_pte = virt_to_kpte(kmap_vstart);
}