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x86/boot/e820: Clean up the E820_X_MAX definition
E820_X_MAX is defined in a somewhat messy fashion: - there's a pretty pointless looking #ifndef __KERNEL__ define that makes no sense in the non-UAPI header anymore, - part of it is defined in api.h, which is not for type definitions, - plus it's defined in two headers and the main explanation is in the header where we don't have the real definition. So move it into a single place in e820/types.h and get rid of the !__KERNEL__ case altogether. Drop the smaller comment - the larger one explains it just fine. Note that the zeropage does not use E820_X_MAX, it uses the legacy 128 entries definition. No change in functionality. Cc: Alex Thorlton <athorlton@sgi.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Huang, Ying <ying.huang@intel.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -1,15 +1,6 @@
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#ifndef _ASM_E820_API_H
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#define _ASM_E820_API_H
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/*
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* E820_X_MAX is the maximum size of the extended E820 table. The extended
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* table may contain up to 3 extra E820 entries per possible NUMA node, so we
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* make room for 3 * MAX_NUMNODES possible entries, beyond the standard 128.
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* Also note that E820_X_MAX *must* be defined before we include asm/e820/types.h.
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*/
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#include <linux/numa.h>
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#define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES)
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#include <asm/e820/types.h>
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#ifndef __ASSEMBLY__
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@ -3,9 +3,6 @@
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#include <uapi/asm/e820/types.h>
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/* Our map: */
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#define E820MAP 0x2d0
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/*
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* The legacy E820 BIOS limits us to 128 (E820MAX) nodes due to the
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* constrained space in the zeropage.
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@ -31,9 +28,13 @@
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* to allow more than three entries per node or otherwise refine
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* this size.
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*/
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#ifndef __KERNEL__
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# define E820_X_MAX E820MAX
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#endif
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#include <linux/numa.h>
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#define E820_X_MAX (E820MAX + 3*MAX_NUMNODES)
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/* Our map: */
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#define E820MAP 0x2d0
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/* Number of entries in E820MAP: */
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#define E820NR 0x1e8
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