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SubjectRe: [PATCH] acpi, apei, arm64: APEI initial support for aarch64.
From
Hi all
Add Tomasz Nowicki <tn@semihalf.com> in the loop

On 15 August 2015 at 02:27, Zhang, Jonathan Zhixiong
<zjzhang@codeaurora.org> wrote:
>
> On 8/14/2015 5:39 AM, Fu Wei wrote:
>>
>> 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@linaro.org> wrote:
>>>
>>> From: Tomasz Nowicki <tomasz.nowicki@linaro.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@linaro.org>
>>> Signed-off-by: Fu Wei <fu.wei@linaro.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
>>>
>>
>>
>>
> I tested this patch on an arm64 platform, the APEI functionalities
> work as expected.
> Tested-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
>
> --
> Jonathan (Zhixiong) Zhang
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project



--
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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