[PATCH v5] acpi, apei, arm64: APEI initial support for aarch64.
From: fu.wei at linaro.org <hidden>
Date: 2015-12-10 08:14:08
Also in:
linux-acpi, lkml
Subsystem:
acpi, acpi apei, arm64 port (aarch64 architecture), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
"Rafael J. Wysocki", Catalin Marinas, Will Deacon, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
From: Tomasz Nowicki <redacted>
This commit provides APEI arch-specific bits for aarch64
Meanwhile, add a new subfunction "hest_ia_init" for
"acpi_disable_cmcff" which is used by IA-32 Architecture
Corrected Machine Check (CMC), and add "HAVE_ACPI_APEI_HEST_IA32"
to make sure only x86 use "hest_ia_init".
Signed-off-by: Tomasz Nowicki <redacted>
Tested-by: Jonathan (Zhixiong) Zhang <redacted>
Signed-off-by: Fu Wei <redacted>
Acked-by: Hanjun Guo <redacted>
---
Changelog:
v5: Add "HAVE_ACPI_APEI_HEST_IA32" instead of
"#if defined(__i386__) || defined(__x86_64__)".
v4: Rebase to latest kernel version(4.4-rc4).
Move arch_apei_flush_tlb_one into header file as a inline function
Add a new subfunction "hest_ia_init" for "acpi_disable_cmcff".
v3: https://lkml.org/lkml/2015/12/3/521
Remove "acpi_disable_cmcff" from arm64 code,
and wrap it in hest.c by "#if defined(__i386__) || defined(__x86_64__)"
v2: https://lkml.org/lkml/2015/12/2/432
Rebase to latest kernel version(4.4-rc3).
Move arch_apei_flush_tlb_one() to arch/arm64/kernel/acpi.c
v1: https://lkml.org/lkml/2015/8/14/199
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".
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/acpi.h | 7 ++++++-
arch/x86/Kconfig | 1 +
drivers/acpi/apei/Kconfig | 3 +++
drivers/acpi/apei/hest.c | 19 ++++++++++++++++---
5 files changed, 27 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 871f217..58c8992 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 caafd63..da657a9 100644
--- a/arch/arm64/include/asm/acpi.h
+++ b/arch/arm64/include/asm/acpi.h@@ -17,6 +17,7 @@ #include <asm/cputype.h> #include <asm/smp_plat.h> +#include <asm/tlbflush.h> /* Macros for consistency checks of the GICC subtable of MADT */ #define ACPI_MADT_GICC_LENGTH \
@@ -94,6 +95,10 @@ static inline const char *acpi_get_enable_method(int cpu) #ifdef CONFIG_ACPI_APEI pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr); -#endif +static inline void arch_apei_flush_tlb_one(unsigned long addr) +{ + flush_tlb_kernel_range(addr, addr + PAGE_SIZE); +} +#endif /* CONFIG_ACPI_APEI */ #endif /*_ASM_ACPI_H*/
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index db3622f..1f9107b 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig@@ -74,6 +74,7 @@ config X86 select GENERIC_TIME_VSYSCALL select HAVE_ACPI_APEI if ACPI select HAVE_ACPI_APEI_NMI if ACPI + select HAVE_ACPI_APEI_HEST_IA32 if ACPI select HAVE_ALIGNED_STRUCT_PAGE if SLUB select HAVE_AOUT if X86_32 select HAVE_ARCH_AUDITSYSCALL
diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig
index b0140c8..a60bb00 100644
--- a/drivers/acpi/apei/Kconfig
+++ b/drivers/acpi/apei/Kconfig@@ -4,6 +4,9 @@ config HAVE_ACPI_APEI config HAVE_ACPI_APEI_NMI bool +config HAVE_ACPI_APEI_HEST_IA32 + bool + config ACPI_APEI bool "ACPI Platform Error Interface (APEI)" select MISC_FILESYSTEMS
diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c
index 20b3fcf..c708c95 100644
--- a/drivers/acpi/apei/hest.c
+++ b/drivers/acpi/apei/hest.c@@ -117,15 +117,27 @@ int apei_hest_parse(apei_hest_func_t func, void *data) } EXPORT_SYMBOL_GPL(apei_hest_parse); +#ifdef CONFIG_HAVE_ACPI_APEI_HEST_IA32 /* * Check if firmware advertises firmware first mode. We need FF bit to be set * along with a set of MC banks which work in FF mode. */ static int __init hest_parse_cmc(struct acpi_hest_header *hest_hdr, void *data) { - return arch_apei_enable_cmcff(hest_hdr, data); + if (!acpi_disable_cmcff) + return !arch_apei_enable_cmcff(hest_hdr, data); + + return 0; } +static inline int __init hest_ia_init(void) +{ + return apei_hest_parse(hest_parse_cmc, NULL); +} +#else +static inline int __init hest_ia_init(void) { return 0; } +#endif + struct ghes_arr { struct platform_device **ghes_devs; unsigned int count;
@@ -232,8 +244,9 @@ void __init acpi_hest_init(void) goto err; } - if (!acpi_disable_cmcff) - apei_hest_parse(hest_parse_cmc, NULL); + rc = hest_ia_init(); + if (rc) + goto err; if (!ghes_disable) { rc = apei_hest_parse(hest_parse_ghes_count, &ghes_count);
--
2.5.0