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From: Catalin Marinas <catalin.marinas@arm.com>
To: Jinjie Ruan <ruanjinjie@huawei.com>
Cc: corbet@lwn.net, skhan@linuxfoundation.org, will@kernel.org,
	chenhuacai@kernel.org, kernel@xen0n.name, maddy@linux.ibm.com,
	mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org,
	pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu,
	alex@ghiti.fr, tglx@kernel.org, mingo@redhat.com, bp@alien8.de,
	dave.hansen@linux.intel.com, hpa@zytor.com, robh@kernel.org,
	saravanak@kernel.org, akpm@linux-foundation.org, bhe@redhat.com,
	vgoyal@redhat.com, dyoung@redhat.com, rdunlap@infradead.org,
	peterz@infradead.org, pawan.kumar.gupta@linux.intel.com,
	feng.tang@linux.alibaba.com, dapeng1.mi@linux.intel.com,
	kees@kernel.org, elver@google.com, paulmck@kernel.org,
	lirongqing@baidu.com, rppt@kernel.org, ardb@kernel.org,
	leitao@debian.org, osandov@fb.com, cfsworks@gmail.com,
	tangyouling@kylinos.cn, sourabhjain@linux.ibm.com,
	ritesh.list@gmail.com, eajames@linux.ibm.com,
	songshuaishuai@tinylab.org, kevin.brodsky@arm.com,
	samuel.holland@sifive.com, vishal.moola@gmail.com,
	junhui.liu@pigmoral.tech, coxu@redhat.com, liaoyuanhong@vivo.com,
	jbohac@suse.cz, fuqiang.wang@easystack.cn, guoren@kernel.org,
	chenjiahao16@huawei.com, hbathini@linux.ibm.com,
	james.morse@arm.com, takahiro.akashi@linaro.org,
	lizhengyu3@huawei.com, x86@kernel.org, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev,
	linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org,
	devicetree@vger.kernel.org, kexec@lists.infradead.org
Subject: Re: [PATCH v10 4/8] crash: Exclude crash kernel memory in crash core
Date: Thu, 26 Mar 2026 10:53:16 +0000	[thread overview]
Message-ID: <acUQHCETMXaEtdK5@arm.com> (raw)
In-Reply-To: <20260325025904.2811960-5-ruanjinjie@huawei.com>

On Wed, Mar 25, 2026 at 10:59:00AM +0800, Jinjie Ruan wrote:
> The crash memory alloc, and the exclude of crashk_res, crashk_low_res
> and crashk_cma memory are almost identical across different architectures,
> handling them in the crash core would eliminate a lot of duplication, so
> do them in the common code.
> 
> To achieve the above goal, three architecture-specific functions are
> introduced:
> 
> - arch_get_system_nr_ranges(). Pre-counts the max number of memory ranges.
> 
> - arch_crash_populate_cmem(). Collects the memory ranges and fills them
>   into cmem.
> 
> - arch_crash_exclude_ranges(). Architecture's additional crash memory
>   ranges exclusion, defaulting to empty.
> 
> Reviewed-by: Sourabh Jain <sourabhjain@linux.ibm.com>
> Acked-by: Baoquan He <bhe@redhat.com>
> Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>

For arm64:

Acked-by: Catalin Marinas <catalin.marinas@arm.com>


WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Jinjie Ruan <ruanjinjie@huawei.com>
Cc: corbet@lwn.net, skhan@linuxfoundation.org, will@kernel.org,
	chenhuacai@kernel.org, kernel@xen0n.name, maddy@linux.ibm.com,
	mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org,
	pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu,
	alex@ghiti.fr, tglx@kernel.org, mingo@redhat.com, bp@alien8.de,
	dave.hansen@linux.intel.com, hpa@zytor.com, robh@kernel.org,
	saravanak@kernel.org, akpm@linux-foundation.org, bhe@redhat.com,
	vgoyal@redhat.com, dyoung@redhat.com, rdunlap@infradead.org,
	peterz@infradead.org, pawan.kumar.gupta@linux.intel.com,
	feng.tang@linux.alibaba.com, dapeng1.mi@linux.intel.com,
	kees@kernel.org, elver@google.com, paulmck@kernel.org,
	lirongqing@baidu.com, rppt@kernel.org, ardb@kernel.org,
	leitao@debian.org, osandov@fb.com, cfsworks@gmail.com,
	tangyouling@kylinos.cn, sourabhjain@linux.ibm.com,
	ritesh.list@gmail.com, eajames@linux.ibm.com,
	songshuaishuai@tinylab.org, kevin.brodsky@arm.com,
	samuel.holland@sifive.com, vishal.moola@gmail.com,
	junhui.liu@pigmoral.tech, coxu@redhat.com, liaoyuanhong@vivo.com,
	jbohac@suse.cz, fuqiang.wang@easystack.cn, guoren@kernel.org,
	chenjiahao16@huawei.com, hbathini@linux.ibm.com,
	james.morse@arm.com, takahiro.akashi@linaro.org,
	lizhengyu3@huawei.com, x86@kernel.org, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev,
	linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org,
	devicetree@vger.kernel.org, kexec@lists.infradead.org
Subject: Re: [PATCH v10 4/8] crash: Exclude crash kernel memory in crash core
Date: Thu, 26 Mar 2026 10:53:16 +0000	[thread overview]
Message-ID: <acUQHCETMXaEtdK5@arm.com> (raw)
In-Reply-To: <20260325025904.2811960-5-ruanjinjie@huawei.com>

On Wed, Mar 25, 2026 at 10:59:00AM +0800, Jinjie Ruan wrote:
> The crash memory alloc, and the exclude of crashk_res, crashk_low_res
> and crashk_cma memory are almost identical across different architectures,
> handling them in the crash core would eliminate a lot of duplication, so
> do them in the common code.
> 
> To achieve the above goal, three architecture-specific functions are
> introduced:
> 
> - arch_get_system_nr_ranges(). Pre-counts the max number of memory ranges.
> 
> - arch_crash_populate_cmem(). Collects the memory ranges and fills them
>   into cmem.
> 
> - arch_crash_exclude_ranges(). Architecture's additional crash memory
>   ranges exclusion, defaulting to empty.
> 
> Reviewed-by: Sourabh Jain <sourabhjain@linux.ibm.com>
> Acked-by: Baoquan He <bhe@redhat.com>
> Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>

For arm64:

Acked-by: Catalin Marinas <catalin.marinas@arm.com>

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

  reply	other threads:[~2026-04-02 12:34 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-25  2:58 [PATCH v10 0/8] arm64/riscv: Add support for crashkernel CMA reservation Jinjie Ruan
2026-03-25  2:58 ` Jinjie Ruan
2026-03-25  2:58 ` [PATCH v10 1/8] riscv: kexec_file: Fix crashk_low_res not exclude bug Jinjie Ruan
2026-03-25  2:58   ` Jinjie Ruan
2026-03-25  2:58 ` [PATCH v10 2/8] powerpc/crash: Fix possible memory leak in update_crash_elfcorehdr() Jinjie Ruan
2026-03-25  2:58   ` Jinjie Ruan
2026-03-25  2:58 ` [PATCH v10 3/8] powerpc/crash: sort crash memory ranges before preparing elfcorehdr Jinjie Ruan
2026-03-25  2:58   ` Jinjie Ruan
2026-03-25  2:59 ` [PATCH v10 4/8] crash: Exclude crash kernel memory in crash core Jinjie Ruan
2026-03-25  2:59   ` Jinjie Ruan
2026-03-26 10:53   ` Catalin Marinas [this message]
2026-03-26 10:53     ` Catalin Marinas
2026-03-25  2:59 ` [PATCH v10 5/8] crash: Use crash_exclude_core_ranges() on powerpc Jinjie Ruan
2026-03-25  2:59   ` Jinjie Ruan
2026-03-25  2:59 ` [PATCH v10 6/8] arm64: kexec: Add support for crashkernel CMA reservation Jinjie Ruan
2026-03-25  2:59   ` Jinjie Ruan
2026-03-26 10:54   ` Catalin Marinas
2026-03-26 10:54     ` Catalin Marinas
2026-03-25  2:59 ` [PATCH v10 7/8] riscv: " Jinjie Ruan
2026-03-25  2:59   ` Jinjie Ruan
2026-03-25  2:59 ` [PATCH v10 8/8] crash: Fix race condition between crash kernel loading and memory hotplug Jinjie Ruan
2026-03-25  2:59   ` Jinjie Ruan
2026-03-26  4:00 ` [PATCH v10 0/8] arm64/riscv: Add support for crashkernel CMA reservation Andrew Morton
2026-03-26  4:00   ` Andrew Morton
2026-03-26 13:09   ` Jinjie Ruan
2026-03-26 13:09     ` Jinjie Ruan

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