linux-kernel - Re: [PATCH v4] acpi, apei, arm64: APEI initial support for aarch64.

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Date:	Tue, 8 Dec 2015 20:45:48 +0800
From:	Fu Wei <fu.wei@...aro.org>
To:	Hanjun Guo <hanjun.guo@...aro.org>
Cc:	Tomasz Nowicki <tomasz.nowicki@...aro.org>,
	Tomasz Nowicki <tn@...ihalf.com>,
	Rafael Wysocki <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org, linux-acpi@...r.kernel.org,
	Linaro ACPI Mailman List <linaro-acpi@...ts.linaro.org>,
	G Gregory <graeme.gregory@...aro.org>,
	Al Stone <al.stone@...aro.org>,
	Mark Rutland <mark.rutland@....com>,
	Marc Zyngier <Marc.Zyngier@....com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	rruigrok@...eaurora.org,
	"Abdulhamid, Harb" <harba@....qualcomm.com>,
	Jon Masters <jcm@...hat.com>, Mark Salter <msalter@...hat.com>,
	Grant Likely <grant.likely@...aro.org>, rrichter@...ium.com,
	jarkko.nikula@...ux.intel.com,
	Jonathan Zhang <jon.zhixiong.zhang@...il.com>
Subject: Re: [PATCH v4] acpi, apei, arm64: APEI initial support for aarch64.

Hi Hanjun,

On 8 December 2015 at 19:26, Hanjun Guo <hanjun.guo@...aro.org> wrote:
> Hi Fu Wei,
>
>
> On 12/08/2015 03:03 PM, fu.wei@...aro.org wrote:
>>
>> From: Tomasz Nowicki <tomasz.nowicki@...aro.org>
>>
>> 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).
>>
>> Signed-off-by: Tomasz Nowicki <tomasz.nowicki@...aro.org>
>> Tested-by: Jonathan (Zhixiong) Zhang <zjzhang@...eaurora.org>
>> Signed-off-by: Fu Wei <fu.wei@...aro.org>
>> ---
>> Changelog:
>> 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 |  5 +++++
>>   drivers/acpi/apei/hest.c      | 19 ++++++++++++++++---
>>   3 files changed, 22 insertions(+), 3 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..31d3d9a 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);
>
>
> How bout adding a empty line here?

np, done


diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
index 31d3d9a..da657a9 100644
--- a/arch/arm64/include/asm/acpi.h
+++ b/arch/arm64/include/asm/acpi.h
@@ -95,10 +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);
+
 static inline void arch_apei_flush_tlb_one(unsigned long addr)
 {
        flush_tlb_kernel_range(addr, addr + PAGE_SIZE);
 }
-#endif
-
+#endif /* CONFIG_ACPI_APEI */
 #endif /*_ASM_ACPI_H*/


>
> Except that,
>
> Acked-by: Hanjun Guo <hanjun.guo@...aro.org>

Great thanks for your review :-)

>
> Thanks
> Hanjun



-- 
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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