| Message ID | 20161201135112.15396-1-fu.wei@linaro.org (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Delegated to: | Rafael Wysocki |
| Headers | show |
On Thursday, December 01, 2016 09:51:12 PM fu.wei@linaro.org wrote: > From: Tomasz Nowicki <tomasz.nowicki@linaro.org> > > This patch provides APEI arch-specific bits for aarch64 > > Meanwhile, > (1)move HEST type (ACPI_HEST_TYPE_IA32_CORRECTED_CHECK) checking to > a generic place. > (2)select HAVE_ACPI_APEI when EFI and ACPI is set on ARM64, > because arch_apei_get_mem_attribute is using efi_mem_attributes on ARM64. > > [Fu Wei: improve && upstream] > > Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org> > Tested-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org> > Signed-off-by: Fu Wei <fu.wei@linaro.org> > Acked-by: Hanjun Guo <hanjun.guo@linaro.org> > Tested-by: Tyler Baicar <tbaicar@codeaurora.org> > Acked-by: Will Deacon <will.deacon@arm.com> > Reviewed-by: Borislav Petkov <bp@suse.de> Well, am I expected to pick up this one? > --- > This patchset has been tested on the following platforms: > (1)ARM Foundation v8 model > > Changelog: > v15:https://lkml.org/lkml/2016/12/1/ > Improve the comment of acpi_disable_cmcff. > Rebase to 4.9.0-rc7-gd7c7bc3 > > v14:https://lkml.org/lkml/2016/8/10/231 > Delete hest_ia32_init(). > Fix a comment typo for acpi_disable_cmcff. > Rebase to 4.8.0-rc1-ge6c4d92 > > v13:https://lkml.org/lkml/2016/8/10/499 > Fix a comment problem(add a "end"). > Add a comment for the definition of acpi_disable_cmcff. > Rebase to 4.8.0-rc1-g372734a > > v12:https://lkml.org/lkml/2016/7/29/97 > Fix a comment problem(redundant "with"). > Rebase to 4.7.0-g680eee2. > > v11:https://lkml.org/lkml/2016/7/27/427 > Rebase to v4.7-0e06f5c0. > > v10:https://lkml.org/lkml/2016/4/14 > Fix the Alphabetical order problem in arch/arm64/Kconfig. > > v9: https://lkml.org/lkml/2016/4/5/522 > Improve the comment for arch_apei_flush_tlb_one. > Using select "HAVE_ACPI_APEI if (ACPI && EFI)" to fix the EFI dependence > problem. > > v8: https://lkml.org/lkml/2016/3/29/132 > Fix a "undefined reference" bug by selecting EFI when ACPI_APEI is set > on ARM64. > > v7: https://lkml.org/lkml/2016/3/17/183 > Add comment for arch_apei_flush_tlb_one in arch/arm64/include/asm/acpi.h. > > v6: https://lists.linaro.org/pipermail/linaro-acpi/2016-March/006644.html > Move HEST type (ACPI_HEST_TYPE_IA32_CORRECTED_CHECK) checking to > a generic place. > Delete HAVE_ACPI_APEI_HEST_IA32. > > v5: https://lkml.org/lkml/2015/12/10/131 > Add "HAVE_ACPI_APEI_HEST_IA32" instead of > "#if defined(__i386__) || defined(__x86_64__)". > > v4: https://lkml.org/lkml/2015/12/8/188 > 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 | 23 ++++++++++++++++++++++- > arch/x86/kernel/acpi/apei.c | 3 --- > drivers/acpi/apei/hest.c | 13 ++++++++++--- > 4 files changed, 33 insertions(+), 7 deletions(-) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 969ef88..657be7f 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -52,6 +52,7 @@ config ARM64 > select GENERIC_TIME_VSYSCALL > select HANDLE_DOMAIN_IRQ > select HARDIRQS_SW_RESEND > + select HAVE_ACPI_APEI if (ACPI && EFI) > select HAVE_ALIGNED_STRUCT_PAGE if SLUB > select HAVE_ARCH_AUDITSYSCALL > select HAVE_ARCH_BITREVERSE > diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h > index e517088..d0de0e0 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 \ > @@ -114,8 +115,28 @@ static inline const char *acpi_get_enable_method(int cpu) > } > > #ifdef CONFIG_ACPI_APEI > +/* > + * acpi_disable_cmcff is used in drivers/acpi/apei/hest.c for disabling > + * IA-32 Architecture Corrected Machine Check (CMC) Firmware-First mode > + * with a kernel command line parameter "acpi=nocmcoff". But we don't > + * have this IA-32 specific feature on ARM64, this definition is only > + * for compatibility. > + */ > +#define acpi_disable_cmcff 1 > pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr); > -#endif > + > +/* > + * Despite its name, this function must still broadcast the TLB > + * invalidation in order to ensure other CPUs don't end up with junk > + * entries as a result of speculation. Unusually, its also called in > + * IRQ context (ghes_iounmap_irq) so if we ever need to use IPIs for > + * TLB broadcasting, then we're in trouble here. > + */ > +static inline void arch_apei_flush_tlb_one(unsigned long addr) > +{ > + flush_tlb_kernel_range(addr, addr + PAGE_SIZE); > +} > +#endif /* CONFIG_ACPI_APEI */ > > #ifdef CONFIG_ACPI_NUMA > int arm64_acpi_numa_init(void); > diff --git a/arch/x86/kernel/acpi/apei.c b/arch/x86/kernel/acpi/apei.c > index c280df6..ea3046e 100644 > --- a/arch/x86/kernel/acpi/apei.c > +++ b/arch/x86/kernel/acpi/apei.c > @@ -24,9 +24,6 @@ int arch_apei_enable_cmcff(struct acpi_hest_header *hest_hdr, void *data) > struct acpi_hest_ia_corrected *cmc; > struct acpi_hest_ia_error_bank *mc_bank; > > - if (hest_hdr->type != ACPI_HEST_TYPE_IA32_CORRECTED_CHECK) > - return 0; > - > cmc = (struct acpi_hest_ia_corrected *)hest_hdr; > if (!cmc->enabled) > return 0; > diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c > index 20b3fcf..8f2a98e 100644 > --- a/drivers/acpi/apei/hest.c > +++ b/drivers/acpi/apei/hest.c > @@ -123,7 +123,13 @@ EXPORT_SYMBOL_GPL(apei_hest_parse); > */ > static int __init hest_parse_cmc(struct acpi_hest_header *hest_hdr, void *data) > { > - return arch_apei_enable_cmcff(hest_hdr, data); > + if (hest_hdr->type != ACPI_HEST_TYPE_IA32_CORRECTED_CHECK) > + return 0; > + > + if (!acpi_disable_cmcff) > + return !arch_apei_enable_cmcff(hest_hdr, data); > + > + return 0; > } > > struct ghes_arr { > @@ -232,8 +238,9 @@ void __init acpi_hest_init(void) > goto err; > } > > - if (!acpi_disable_cmcff) > - apei_hest_parse(hest_parse_cmc, NULL); > + rc = apei_hest_parse(hest_parse_cmc, NULL); > + if (rc) > + goto err; > > if (!ghes_disable) { > rc = apei_hest_parse(hest_parse_ghes_count, &ghes_count); > Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 969ef88..657be7f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -52,6 +52,7 @@ config ARM64 select GENERIC_TIME_VSYSCALL select HANDLE_DOMAIN_IRQ select HARDIRQS_SW_RESEND + select HAVE_ACPI_APEI if (ACPI && EFI) select HAVE_ALIGNED_STRUCT_PAGE if SLUB select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_BITREVERSE diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index e517088..d0de0e0 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 \ @@ -114,8 +115,28 @@ static inline const char *acpi_get_enable_method(int cpu) } #ifdef CONFIG_ACPI_APEI +/* + * acpi_disable_cmcff is used in drivers/acpi/apei/hest.c for disabling + * IA-32 Architecture Corrected Machine Check (CMC) Firmware-First mode + * with a kernel command line parameter "acpi=nocmcoff". But we don't + * have this IA-32 specific feature on ARM64, this definition is only + * for compatibility. + */ +#define acpi_disable_cmcff 1 pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr); -#endif + +/* + * Despite its name, this function must still broadcast the TLB + * invalidation in order to ensure other CPUs don't end up with junk + * entries as a result of speculation. Unusually, its also called in + * IRQ context (ghes_iounmap_irq) so if we ever need to use IPIs for + * TLB broadcasting, then we're in trouble here. + */ +static inline void arch_apei_flush_tlb_one(unsigned long addr) +{ + flush_tlb_kernel_range(addr, addr + PAGE_SIZE); +} +#endif /* CONFIG_ACPI_APEI */ #ifdef CONFIG_ACPI_NUMA int arm64_acpi_numa_init(void); diff --git a/arch/x86/kernel/acpi/apei.c b/arch/x86/kernel/acpi/apei.c index c280df6..ea3046e 100644 --- a/arch/x86/kernel/acpi/apei.c +++ b/arch/x86/kernel/acpi/apei.c @@ -24,9 +24,6 @@ int arch_apei_enable_cmcff(struct acpi_hest_header *hest_hdr, void *data) struct acpi_hest_ia_corrected *cmc; struct acpi_hest_ia_error_bank *mc_bank; - if (hest_hdr->type != ACPI_HEST_TYPE_IA32_CORRECTED_CHECK) - return 0; - cmc = (struct acpi_hest_ia_corrected *)hest_hdr; if (!cmc->enabled) return 0; diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index 20b3fcf..8f2a98e 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -123,7 +123,13 @@ EXPORT_SYMBOL_GPL(apei_hest_parse); */ static int __init hest_parse_cmc(struct acpi_hest_header *hest_hdr, void *data) { - return arch_apei_enable_cmcff(hest_hdr, data); + if (hest_hdr->type != ACPI_HEST_TYPE_IA32_CORRECTED_CHECK) + return 0; + + if (!acpi_disable_cmcff) + return !arch_apei_enable_cmcff(hest_hdr, data); + + return 0; } struct ghes_arr { @@ -232,8 +238,9 @@ void __init acpi_hest_init(void) goto err; } - if (!acpi_disable_cmcff) - apei_hest_parse(hest_parse_cmc, NULL); + rc = apei_hest_parse(hest_parse_cmc, NULL); + if (rc) + goto err; if (!ghes_disable) { rc = apei_hest_parse(hest_parse_ghes_count, &ghes_count);