[PATCH] acpi, apei, arm64: APEI initial support for aarch64.

[fu . wei]

From: Tomasz Nowicki <tomasz.nowicki@xxxxxxxxxx>

This commit provides APEI arch-specific bits for aarch64

Changelog:
  Fu Wei:
    Move arch_apei_flush_tlb_one() to arch/arm64/include/asm/apci.h.
    Delete arch/arm64/kernel/apei.c.
    Add "#ifdef CONFIG_ACPI_APEI" for "acpi_disable_cmcff".

Signed-off-by: Tomasz Nowicki <tomasz.nowicki@xxxxxxxxxx>
Signed-off-by: Fu Wei <fu.wei@xxxxxxxxxx>
---
 arch/arm64/Kconfig            |  1 +
 arch/arm64/include/asm/acpi.h | 11 +++++++++++
 arch/arm64/kernel/acpi.c      |  4 ++++
 3 files changed, 16 insertions(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 318175f..6144c9d 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -3,6 +3,7 @@ config ARM64
 	select ACPI_CCA_REQUIRED if ACPI
 	select ACPI_GENERIC_GSI if ACPI
 	select ACPI_REDUCED_HARDWARE_ONLY if ACPI
+	select HAVE_ACPI_APEI if ACPI
 	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select ARCH_HAS_ELF_RANDOMIZE
 	select ARCH_HAS_GCOV_PROFILE_ALL
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
index a17b623..ced6e25 100644
--- a/arch/arm64/include/asm/acpi.h
+++ b/arch/arm64/include/asm/acpi.h
@@ -22,6 +22,7 @@
 #ifdef CONFIG_ACPI_APEI
 #include <linux/efi.h>
 #include <asm/pgtable.h>
+#include <asm/tlbflush.h>
 #endif
 
 /* Macros for consistency checks of the GICC subtable of MADT */
@@ -52,6 +53,9 @@ typedef u64 phys_cpuid_t;
 extern int acpi_disabled;
 extern int acpi_noirq;
 extern int acpi_pci_disabled;
+#ifdef CONFIG_ACPI_APEI
+extern int acpi_disable_cmcff;
+#endif
 
 static inline void disable_acpi(void)
 {
@@ -89,6 +93,13 @@ static inline bool acpi_has_cpu_in_madt(void)
 static inline void arch_fix_phys_package_id(int num, u32 slot) { }
 void __init acpi_init_cpus(void);
 
+#ifdef CONFIG_ACPI_APEI
+static inline void arch_apei_flush_tlb_one(unsigned long addr)
+{
+	flush_tlb_kernel_range(addr, addr + PAGE_SIZE);
+}
+#endif
+
 #else
 static inline void acpi_init_cpus(void) { }
 #endif /* CONFIG_ACPI */
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index 19de753..bd1be9a 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -36,6 +36,10 @@ EXPORT_SYMBOL(acpi_disabled);
 int acpi_pci_disabled = 1;	/* skip ACPI PCI scan and IRQ initialization */
 EXPORT_SYMBOL(acpi_pci_disabled);
 
+#ifdef CONFIG_ACPI_APEI
+int acpi_disable_cmcff;
+#endif
+
 static bool param_acpi_off __initdata;
 static bool param_acpi_force __initdata;
 
-- 
1.9.1

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