linux-kernel - Re: [PATCH] acpi, apei, arm64: APEI initial support for aarch64.

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Date:	Fri, 14 Aug 2015 20:39:44 +0800
From:	Fu Wei <fu.wei@...aro.org>
To:	Linaro ACPI Mailman List <linaro-acpi@...ts.linaro.org>,
	linux-kernel@...r.kernel.org,
	"Zhang, Jonathan Zhixiong" <zjzhang@...eaurora.org>,
	"matt.fleming" <matt.fleming@...el.com>
Cc:	Wei Fu <tekkamanninja@...il.com>,
	G Gregory <graeme.gregory@...aro.org>,
	Al Stone <al.stone@...aro.org>,
	Hanjun Guo <hanjun.guo@...aro.org>,
	Jon Masters <jcm@...hat.com>,
	Mark Rutland <mark.rutland@....com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Rafael Wysocki <rjw@...ysocki.net>, bp <bp@...en8.de>,
	Tomasz Nowicki <tomasz.nowicki@...aro.org>,
	Fu Wei <fu.wei@...aro.org>
Subject: Re: [PATCH] acpi, apei, arm64: APEI initial support for aarch64.

Hi all,

This patch depends on https://lkml.org/lkml/2015/8/8/169
[PATCH V11 4/5] arm64: apei: implement arch_apei_get_mem_attributes(),
which has been in the "next" branch of
git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git

FYI
Thanks

On 14 August 2015 at 20:35,  <fu.wei@...aro.org> wrote:
> From: Tomasz Nowicki <tomasz.nowicki@...aro.org>
>
> 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@...aro.org>
> Signed-off-by: Fu Wei <fu.wei@...aro.org>
> ---
>  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
>



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021
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