From: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
To: Ralf Baechle <ralf@linux-mips.org>, <linux-mips@linux-mips.org>
Subject: [PATCH 01/10] MIPS: do not request resources for crashkernel if one isn't defined
Date: Wed, 23 Nov 2016 14:43:43 +0100 [thread overview]
Message-ID: <1479908632-30392-2-git-send-email-marcin.nowakowski@imgtec.com> (raw)
In-Reply-To: <1479908632-30392-1-git-send-email-marcin.nowakowski@imgtec.com>
When KEXEC is enabled but crashkernel details are not passed through the
kernel commandline unnecessary resources are requested (start==end==0)
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
---
arch/mips/kernel/setup.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index f66e5ce..0058fea 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -672,6 +672,9 @@ static void __init request_crashkernel(struct resource *res)
{
int ret;
+ if (crashk_res.start == crashk_res.end)
+ return;
+
ret = request_resource(res, &crashk_res);
if (!ret)
pr_info("Reserving %ldMB of memory at %ldMB for crashkernel\n",
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
To: Ralf Baechle <ralf@linux-mips.org>, linux-mips@linux-mips.org
Subject: [PATCH 01/10] MIPS: do not request resources for crashkernel if one isn't defined
Date: Wed, 23 Nov 2016 14:43:43 +0100 [thread overview]
Message-ID: <1479908632-30392-2-git-send-email-marcin.nowakowski@imgtec.com> (raw)
Message-ID: <20161123134343.BDiv0zdWDLrCLokCA--fTrmCjZxtuWvwxFFiyv_X9bs@z> (raw)
In-Reply-To: <1479908632-30392-1-git-send-email-marcin.nowakowski@imgtec.com>
When KEXEC is enabled but crashkernel details are not passed through the
kernel commandline unnecessary resources are requested (start==end==0)
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
---
arch/mips/kernel/setup.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index f66e5ce..0058fea 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -672,6 +672,9 @@ static void __init request_crashkernel(struct resource *res)
{
int ret;
+ if (crashk_res.start == crashk_res.end)
+ return;
+
ret = request_resource(res, &crashk_res);
if (!ret)
pr_info("Reserving %ldMB of memory at %ldMB for crashkernel\n",
--
2.7.4
next prev parent reply other threads:[~2016-11-23 13:44 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-23 13:43 [PATCH 00/10] various fixes for kexec crashkernel support Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski [this message]
2016-11-23 13:43 ` [PATCH 01/10] MIPS: do not request resources for crashkernel if one isn't defined Marcin Nowakowski
2016-11-23 13:43 ` [PATCH 02/10] MIPS: init: ensure reserved memory regions are not added to bootmem Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski
2016-11-23 13:43 ` [PATCH 03/10] MIPS: init: ensure bootmem does not corrupt reserved memory Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski
2016-11-23 13:43 ` [PATCH 04/10] MIPS: use early_init_fdt_reserve_self to protect DTB location Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski
2016-11-23 13:43 ` [PATCH 05/10] MIPS: platform: allow for DTB to be moved during kernel relocation Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski
2016-11-23 13:43 ` [PATCH 06/10] MIPS: relocate: optionally relocate the DTB Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski
2016-11-23 13:43 ` [PATCH 07/10] MIPS: fix mem=X@Y commandline processing Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski
2016-11-23 13:43 ` [PATCH 08/10] MIPS: kexec: do not reserve invalid crashkernel memory on boot Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski
2016-11-23 13:43 ` [PATCH 09/10] MIPS: kexec: add debug info about the new kexec'ed image Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski
2016-11-23 13:43 ` [PATCH 10/10] MIPS: generic/kexec: add support for a DTB passed in a separate buffer Marcin Nowakowski
2016-11-23 13:43 ` Marcin Nowakowski
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