From: Catalin Marinas <catalin.marinas@arm.com>
To: Dave Young <dyoung@redhat.com>,
kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Will Deacon <will@kernel.org>,
Zhen Lei <thunder.leizhen@huawei.com>,
Baoquan He <bhe@redhat.com>, Vivek Goyal <vgoyal@redhat.com>,
linux-doc@vger.kernel.org, Jonathan Corbet <corbet@lwn.net>
Cc: Chen Zhou <dingguo.cz@antgroup.com>,
Randy Dunlap <rdunlap@infradead.org>,
John Donnelly <John.p.donnelly@oracle.com>,
Dave Kleikamp <dave.kleikamp@oracle.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
Feng Zhou <zhoufeng.zf@bytedance.com>,
"Eric W . Biederman" <ebiederm@xmission.com>
Subject: Re: [PATCH] arm64: kdump: Do not allocate crash low memory if not needed
Date: Mon, 16 May 2022 20:06:51 +0100 [thread overview]
Message-ID: <165272800400.3869992.18113408678309495430.b4-ty@arm.com> (raw)
In-Reply-To: <20220511032033.426-1-thunder.leizhen@huawei.com>
On Wed, 11 May 2022 11:20:32 +0800, Zhen Lei wrote:
> When "crashkernel=X,high" is specified, the specified "crashkernel=Y,low"
> memory is not required in the following corner cases:
> 1. If both CONFIG_ZONE_DMA and CONFIG_ZONE_DMA32 are disabled, it means
> that the devices can access any memory.
> 2. If the system memory is small, the crash high memory may be allocated
> from the DMA zones. If that happens, there's no need to allocate
> another crash low memory because there's already one.
>
> [...]
Applied to arm64 (for-next/crashkernel), thanks!
[1/1] arm64: kdump: Do not allocate crash low memory if not needed
https://git.kernel.org/arm64/c/8f0f104e2ab6
--
Catalin
WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Dave Young <dyoung@redhat.com>,
kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Will Deacon <will@kernel.org>,
Zhen Lei <thunder.leizhen@huawei.com>,
Baoquan He <bhe@redhat.com>, Vivek Goyal <vgoyal@redhat.com>,
linux-doc@vger.kernel.org, Jonathan Corbet <corbet@lwn.net>
Cc: Chen Zhou <dingguo.cz@antgroup.com>,
Randy Dunlap <rdunlap@infradead.org>,
John Donnelly <John.p.donnelly@oracle.com>,
Dave Kleikamp <dave.kleikamp@oracle.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
Feng Zhou <zhoufeng.zf@bytedance.com>,
"Eric W . Biederman" <ebiederm@xmission.com>
Subject: Re: [PATCH] arm64: kdump: Do not allocate crash low memory if not needed
Date: Mon, 16 May 2022 20:06:51 +0100 [thread overview]
Message-ID: <165272800400.3869992.18113408678309495430.b4-ty@arm.com> (raw)
In-Reply-To: <20220511032033.426-1-thunder.leizhen@huawei.com>
On Wed, 11 May 2022 11:20:32 +0800, Zhen Lei wrote:
> When "crashkernel=X,high" is specified, the specified "crashkernel=Y,low"
> memory is not required in the following corner cases:
> 1. If both CONFIG_ZONE_DMA and CONFIG_ZONE_DMA32 are disabled, it means
> that the devices can access any memory.
> 2. If the system memory is small, the crash high memory may be allocated
> from the DMA zones. If that happens, there's no need to allocate
> another crash low memory because there's already one.
>
> [...]
Applied to arm64 (for-next/crashkernel), thanks!
[1/1] arm64: kdump: Do not allocate crash low memory if not needed
https://git.kernel.org/arm64/c/8f0f104e2ab6
--
Catalin
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: kexec@lists.infradead.org
Subject: [PATCH] arm64: kdump: Do not allocate crash low memory if not needed
Date: Mon, 16 May 2022 20:06:51 +0100 [thread overview]
Message-ID: <165272800400.3869992.18113408678309495430.b4-ty@arm.com> (raw)
In-Reply-To: <20220511032033.426-1-thunder.leizhen@huawei.com>
On Wed, 11 May 2022 11:20:32 +0800, Zhen Lei wrote:
> When "crashkernel=X,high" is specified, the specified "crashkernel=Y,low"
> memory is not required in the following corner cases:
> 1. If both CONFIG_ZONE_DMA and CONFIG_ZONE_DMA32 are disabled, it means
> that the devices can access any memory.
> 2. If the system memory is small, the crash high memory may be allocated
> from the DMA zones. If that happens, there's no need to allocate
> another crash low memory because there's already one.
>
> [...]
Applied to arm64 (for-next/crashkernel), thanks!
[1/1] arm64: kdump: Do not allocate crash low memory if not needed
https://git.kernel.org/arm64/c/8f0f104e2ab6
--
Catalin
next prev parent reply other threads:[~2022-05-16 19:07 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-11 3:20 [PATCH] arm64: kdump: Do not allocate crash low memory if not needed Zhen Lei
2022-05-11 3:20 ` Zhen Lei
2022-05-11 3:20 ` Zhen Lei
2022-05-11 9:06 ` Baoquan He
2022-05-11 9:06 ` Baoquan He
2022-05-11 9:06 ` Baoquan He
2022-05-11 9:50 ` Leizhen (ThunderTown)
2022-05-11 9:50 ` Leizhen
2022-05-11 9:50 ` Leizhen (ThunderTown)
2022-05-11 10:06 ` Baoquan He
2022-05-11 10:06 ` Baoquan He
2022-05-11 10:06 ` Baoquan He
2022-05-16 19:06 ` Catalin Marinas [this message]
2022-05-16 19:06 ` Catalin Marinas
2022-05-16 19:06 ` Catalin Marinas
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