forked from Minki/linux
b5666f7039
This patch separates usage of KERNELBASE and PAGE_OFFSET. I haven't looked at any of the PPC32 code, if we ever want to support Kdump on PPC we'll have to do another audit, ditto for iSeries. This patch makes PAGE_OFFSET the constant, it'll always be 0xC * 1 gazillion for 64-bit. To get a physical address from a virtual one you subtract PAGE_OFFSET, _not_ KERNELBASE. KERNELBASE is the virtual address of the start of the kernel, it's often the same as PAGE_OFFSET, but _might not be_. If you want to know something's offset from the start of the kernel you should subtract KERNELBASE. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
32 lines
901 B
C
32 lines
901 B
C
/*
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* Copyright (C) 2005 Stephen Rothwell IBM Corp.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <asm/mmu.h>
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#include <asm/page.h>
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#include <asm/iseries/lpar_map.h>
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const struct LparMap __attribute__((__section__(".text"))) xLparMap = {
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.xNumberEsids = HvEsidsToMap,
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.xNumberRanges = HvRangesToMap,
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.xSegmentTableOffs = STAB0_PAGE,
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.xEsids = {
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{ .xKernelEsid = GET_ESID(PAGE_OFFSET),
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.xKernelVsid = KERNEL_VSID(PAGE_OFFSET), },
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{ .xKernelEsid = GET_ESID(VMALLOCBASE),
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.xKernelVsid = KERNEL_VSID(VMALLOCBASE), },
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},
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.xRanges = {
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{ .xPages = HvPagesToMap,
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.xOffset = 0,
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.xVPN = KERNEL_VSID(PAGE_OFFSET) << (SID_SHIFT - HW_PAGE_SHIFT),
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},
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},
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};
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