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Commit 7a9d1256 authored by Michael Ellerman's avatar Michael Ellerman Committed by Benjamin Herrenschmidt
Browse files

powerpc: Record vma->phys_addr in ioremap() 



The vmalloc code can track the physical address of a vma, when the
vma is used for ioremap, if set it is displayed in /proc/vmallocinfo.

Because get_vm_area_caller() doesn't know it's being called for
ioremap() it's up to the arch code to set the phys_addr. A bunch
of other arch's do this, I'm not sure why powerpc doesn't?

Signed-off-by: default avatarMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent bb2c458b

arch/powerpc/mm/pgtable_32.c

+1 −0
Original line number Diff line number Diff line
@@ -230,6 +230,7 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags, 
		area = get_vm_area_caller(size, VM_IOREMAP, caller);

		if (area == 0)

			return NULL;

		area->phys_addr = p;

		v = (unsigned long) area->addr;

	} else {

		v = (ioremap_bot -= size);

arch/powerpc/mm/pgtable_64.c

+2 −0
Original line number Diff line number Diff line
@@ -223,6 +223,8 @@ void __iomem * __ioremap_caller(phys_addr_t addr, unsigned long size, 
					    caller);

		if (area == NULL)

			return NULL;



		area->phys_addr = paligned;

		ret = __ioremap_at(paligned, area->addr, size, flags);

		if (!ret)

			vunmap(area->addr);