From: Eric DeVolder <eric.devolder@oracle.com>
To: Baoquan He <bhe@redhat.com>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
kexec@lists.infradead.org, ebiederm@xmission.com,
dyoung@redhat.com, vgoyal@redhat.com, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
hpa@zytor.com, nramas@linux.microsoft.com,
thomas.lendacky@amd.com, robh@kernel.org, efault@gmx.de,
rppt@kernel.org, konrad.wilk@oracle.com,
boris.ostrovsky@oracle.com
Subject: Re: [PATCH v4 03/10] crash hp: definitions and prototype changes
Date: Tue, 1 Mar 2022 14:04:42 -0600 [thread overview]
Message-ID: <4645ff8f-d4ab-a6a5-b4dd-df2b652daaee@oracle.com> (raw)
In-Reply-To: <YhWtSWbKbr6aLezO@MiWiFi-R3L-srv>
On 2/22/22 21:43, Baoquan He wrote:
> On 02/09/22 at 02:56pm, Eric DeVolder wrote:
>> This change adds members to struct kimage to facilitate crash
>> hotplug support.
>>
>> This change also defines crash hotplug events and associated
>> prototypes.
>>
>> Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
>> ---
>> include/linux/kexec.h | 16 ++++++++++++++++
>> 1 file changed, 16 insertions(+)
>>
>> diff --git a/include/linux/kexec.h b/include/linux/kexec.h
>> index 0c994ae37729..13c238c2da48 100644
>> --- a/include/linux/kexec.h
>> +++ b/include/linux/kexec.h
>> @@ -299,6 +299,13 @@ struct kimage {
>>
>> /* Information for loading purgatory */
>> struct purgatory_info purgatory_info;
>> +
>> +#ifdef CONFIG_CRASH_HOTPLUG
>> + bool hotplug_event;
>> + int offlinecpu;
>> + bool elf_index_valid;
>> + int elf_index;
>> +#endif
>> #endif
>>
>> #ifdef CONFIG_IMA_KEXEC
>> @@ -315,6 +322,15 @@ struct kimage {
>> unsigned long elf_load_addr;
>> };
>>
>> +#ifdef CONFIG_CRASH_HOTPLUG
>> +void arch_crash_hotplug_handler(struct kimage *image,
>> + unsigned int hp_action, unsigned long a, unsigned long b);
>
> Seems this patch can be merged with patch 6/10. I don't see prototype
> change in this patch.
Ok, done.
eric
>
>> +#define KEXEC_CRASH_HP_REMOVE_CPU 0
>> +#define KEXEC_CRASH_HP_ADD_CPU 1
>> +#define KEXEC_CRASH_HP_REMOVE_MEMORY 2
>> +#define KEXEC_CRASH_HP_ADD_MEMORY 3
>> +#endif /* CONFIG_CRASH_HOTPLUG */
>> +
>> /* kexec interface functions */
>> extern void machine_kexec(struct kimage *image);
>> extern int machine_kexec_prepare(struct kimage *image);
>> --
>> 2.27.0
>>
>
next prev parent reply other threads:[~2022-03-01 20:06 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-09 19:56 [PATCH v4 00/10] crash: Kernel handling of CPU and memory hot un/plug Eric DeVolder
2022-02-09 19:56 ` [PATCH v4 01/10] crash: fix minor typo/bug in debug message Eric DeVolder
2022-02-09 19:56 ` [PATCH v4 02/10] crash hp: Introduce CRASH_HOTPLUG configuration options Eric DeVolder
2022-02-23 3:25 ` Baoquan He
2022-03-01 20:04 ` Eric DeVolder
2022-03-02 9:20 ` David Hildenbrand
2022-03-03 10:22 ` Baoquan He
2022-03-03 11:36 ` David Hildenbrand
2022-03-03 12:08 ` Baoquan He
2022-03-03 15:31 ` Eric DeVolder
2022-02-09 19:56 ` [PATCH v4 03/10] crash hp: definitions and prototype changes Eric DeVolder
2022-02-23 3:43 ` Baoquan He
2022-03-01 20:04 ` Eric DeVolder [this message]
2022-02-09 19:57 ` [PATCH v4 04/10] crash hp: prototype change for crash_prepare_elf64_headers Eric DeVolder
2022-02-23 3:46 ` Baoquan He
2022-03-01 20:05 ` Eric DeVolder
2022-02-09 19:57 ` [PATCH v4 05/10] crash hp: introduce helper functions un/map_crash_pages Eric DeVolder
2022-02-23 3:58 ` Baoquan He
2022-03-01 20:06 ` Eric DeVolder
2022-02-09 19:57 ` [PATCH v4 06/10] crash hp: generic crash hotplug support infrastructure Eric DeVolder
2022-02-23 3:59 ` Baoquan He
2022-03-01 20:07 ` Eric DeVolder
2022-02-09 19:57 ` [PATCH v4 07/10] crash hp: exclude elfcorehdr from the segment digest Eric DeVolder
2022-02-23 4:00 ` Baoquan He
2022-03-01 20:07 ` Eric DeVolder
2022-02-09 19:57 ` [PATCH v4 08/10] crash hp: exclude hot remove cpu from elfcorehdr notes Eric DeVolder
2022-02-23 4:04 ` Baoquan He
2022-03-01 20:08 ` Eric DeVolder
2022-02-09 19:57 ` [PATCH v4 09/10] crash hp: Add x86 crash hotplug support for kexec_file_load Eric DeVolder
2022-02-23 4:10 ` Baoquan He
2022-03-01 20:12 ` Eric DeVolder
2022-03-03 10:27 ` Baoquan He
2022-02-09 19:57 ` [PATCH v4 10/10] crash hp: Add x86 crash hotplug support for kexec_load Eric DeVolder
2022-02-21 4:08 ` [PATCH v4 00/10] crash: Kernel handling of CPU and memory hot un/plug Baoquan He
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