From: Mike Rapoport <rppt@kernel.org>
To: Chen Zhou <chenzhou10@huawei.com>
Cc: wangkefeng.wang@huawei.com, linux-doc@vger.kernel.org,
catalin.marinas@arm.com, bhsharma@redhat.com,
huawei.libin@huawei.com, guohanjun@huawei.com, will@kernel.org,
bhe@redhat.com, corbet@lwn.net, mingo@redhat.com,
dyoung@redhat.com, John.P.donnelly@oracle.com, arnd@arndb.de,
xiexiuqi@huawei.com, horms@verge.net.au, tglx@linutronix.de,
linux-arm-kernel@lists.infradead.org, kexec@lists.infradead.org,
linux-kernel@vger.kernel.org, robh+dt@kernel.org,
james.morse@arm.com, prabhakar.pkin@gmail.com,
nsaenzjulienne@suse.de
Subject: Re: [PATCH v13 1/8] x86: kdump: replace the hard-coded alignment with macro CRASH_ALIGN
Date: Thu, 12 Nov 2020 09:58:10 +0200 [thread overview]
Message-ID: <20201112075810.GJ4758@kernel.org> (raw)
In-Reply-To: <20201031074437.168008-2-chenzhou10@huawei.com>
Hi,
On Sat, Oct 31, 2020 at 03:44:30PM +0800, Chen Zhou wrote:
> Move CRASH_ALIGN to header asm/kexec.h and replace the hard-coded
> alignment with macro CRASH_ALIGN in function reserve_crashkernel().
>
> Suggested-by: Dave Young <dyoung@redhat.com>
> Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
> Tested-by: John Donnelly <John.p.donnelly@oracle.com>
> ---
> arch/x86/include/asm/kexec.h | 3 +++
> arch/x86/kernel/setup.c | 5 +----
> 2 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h
> index 6802c59e8252..8cf9d3fd31c7 100644
> --- a/arch/x86/include/asm/kexec.h
> +++ b/arch/x86/include/asm/kexec.h
> @@ -18,6 +18,9 @@
>
> # define KEXEC_CONTROL_CODE_MAX_SIZE 2048
>
> +/* 2M alignment for crash kernel regions */
> +#define CRASH_ALIGN SZ_16M
Please update the comment to match the code.
> +
> #ifndef __ASSEMBLY__
>
> #include <linux/string.h>
> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
> index 84f581c91db4..bf373422dc8a 100644
> --- a/arch/x86/kernel/setup.c
> +++ b/arch/x86/kernel/setup.c
> @@ -395,9 +395,6 @@ static void __init memblock_x86_reserve_range_setup_data(void)
>
> #ifdef CONFIG_KEXEC_CORE
>
> -/* 16M alignment for crash kernel regions */
> -#define CRASH_ALIGN SZ_16M
> -
> /*
> * Keep the crash kernel below this limit.
> *
> @@ -515,7 +512,7 @@ static void __init reserve_crashkernel(void)
> } else {
> unsigned long long start;
>
> - start = memblock_phys_alloc_range(crash_size, SZ_1M, crash_base,
> + start = memblock_phys_alloc_range(crash_size, CRASH_ALIGN, crash_base,
> crash_base + crash_size);
> if (start != crash_base) {
> pr_info("crashkernel reservation failed - memory is in use.\n");
> --
> 2.20.1
>
--
Sincerely yours,
Mike.
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next prev parent reply other threads:[~2020-11-12 7:58 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-31 7:44 [PATCH v13 0/8] support reserving crashkernel above 4G on arm64 kdump Chen Zhou
2020-10-31 7:44 ` [PATCH v13 1/8] x86: kdump: replace the hard-coded alignment with macro CRASH_ALIGN Chen Zhou
2020-11-11 1:38 ` Baoquan He
2020-11-11 13:26 ` chenzhou
2020-11-12 7:58 ` Mike Rapoport [this message]
2020-11-12 8:12 ` chenzhou
2020-10-31 7:44 ` [PATCH v13 2/8] x86: kdump: make the lower bound of crash kernel reservation consistent Chen Zhou
2020-10-31 7:44 ` [PATCH v13 3/8] x86: kdump: use macro CRASH_ADDR_LOW_MAX in functions reserve_crashkernel() Chen Zhou
2020-10-31 7:44 ` [PATCH v13 4/8] x86: kdump: move reserve_crashkernel[_low]() into crash_core.c Chen Zhou
2020-11-12 8:11 ` Mike Rapoport
2020-11-12 13:01 ` chenzhou
2020-10-31 7:44 ` [PATCH v13 5/8] arm64: kdump: introduce some macroes for crash kernel reservation Chen Zhou
2020-10-31 7:44 ` [PATCH v13 6/8] arm64: kdump: reimplement crashkernel=X Chen Zhou
2020-11-11 1:59 ` Baoquan He
2020-11-11 13:27 ` chenzhou
2020-11-11 13:54 ` Baoquan He
2020-11-12 8:25 ` Mike Rapoport
2020-11-12 8:36 ` Baoquan He
2020-11-12 13:11 ` chenzhou
2020-10-31 7:44 ` [PATCH v13 7/8] arm64: kdump: add memory for devices by DT property linux, usable-memory-range Chen Zhou
2020-10-31 7:44 ` [PATCH v13 8/8] kdump: update Documentation about crashkernel Chen Zhou
2020-11-09 12:34 ` [PATCH v13 0/8] support reserving crashkernel above 4G on arm64 kdump chenzhou
2020-11-11 3:01 ` Baoquan He
2020-11-11 13:29 ` chenzhou
2020-11-11 19:41 ` Bhupesh SHARMA
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