linux-kernel - [PATCH v4 3/5] ACPI: table upgrade: move arch-specific symbol to asm/acpi.h

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Message-Id: <20160620105615.15538-4-aleksey.makarov@linaro.org>
Date:	Mon, 20 Jun 2016 13:56:11 +0300
From:	Aleksey Makarov <aleksey.makarov@...aro.org>
To:	"Rafael J . Wysocki" <rjw@...ysocki.net>
Cc:	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>, Len Brown <lenb@...nel.org>,
	linux-acpi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Aleksey Makarov <aleksey.makarov@...aro.org>,
	Graeme Gregory <graeme.gregory@...aro.org>,
	Jon Masters <jcm@...hat.com>, "Zheng, Lv" <lv.zheng@...el.com>,
	Mark Rutland <mark.rutland@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: [PATCH v4 3/5] ACPI: table upgrade: move arch-specific symbol to asm/acpi.h

The constant that defines max phys address where the new upgraded
ACPI table should be allocated is arch-specific.  Move it to
<asm/acpi.h>

Signed-off-by: Aleksey Makarov <aleksey.makarov@...aro.org>
---
 arch/x86/include/asm/acpi.h | 2 ++
 drivers/acpi/tables.c       | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 65f1e95..5391b0a 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -169,4 +169,6 @@ static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr)
 }
 #endif
 
+#define ACPI_TABLE_UPGRADE_MAX_PHYS (max_low_pfn_mapped << PAGE_SHIFT)
+
 #endif /* _ASM_X86_ACPI_H */
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index b05df13..9f0ad6e 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -35,6 +35,7 @@
 #include <linux/earlycpio.h>
 #include <linux/memblock.h>
 #include <linux/initrd.h>
+#include <linux/acpi.h>
 #include "internal.h"
 
 #ifdef CONFIG_ACPI_CUSTOM_DSDT
@@ -543,7 +544,7 @@ void __init acpi_table_upgrade(void)
 		return;
 
 	acpi_tables_addr =
-		memblock_find_in_range(0, max_low_pfn_mapped << PAGE_SHIFT,
+		memblock_find_in_range(0, ACPI_TABLE_UPGRADE_MAX_PHYS,
 				       all_tables_size, PAGE_SIZE);
 	if (!acpi_tables_addr) {
 		WARN_ON(1);
-- 
2.8.3