linux-kernel - [tip:core/resources] kexec: Set IORESOURCE_SYSTEM

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Message-ID: <tip-1a085d0727afaedb9506f04798516298b1676e11@git.kernel.org>
Date:	Sat, 30 Jan 2016 01:30:14 -0800
From:	tip-bot for Toshi Kani <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	mnfhuang@...il.com, bhe@...hat.com, akpm@...ux-foundation.org,
	tglx@...utronix.de, toshi.kani@...com, luto@...capital.net,
	dyoung@...hat.com, bp@...en8.de, d.hatayama@...fujitsu.com,
	dvlasenk@...hat.com, linux-mm@...ck.org, hpa@...or.com, bp@...e.de,
	torvalds@...ux-foundation.org, vgoyal@...hat.com, mingo@...nel.org,
	linux-kernel@...r.kernel.org, toshi.kani@....com, mcgrof@...e.com,
	brgerst@...il.com, peterz@...radead.org
Subject: [tip:core/resources] kexec:
  Set IORESOURCE_SYSTEM_RAM for System RAM

Commit-ID:  1a085d0727afaedb9506f04798516298b1676e11
Gitweb:     http://git.kernel.org/tip/1a085d0727afaedb9506f04798516298b1676e11
Author:     Toshi Kani <toshi.kani@....com>
AuthorDate: Tue, 26 Jan 2016 21:57:23 +0100
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Sat, 30 Jan 2016 09:49:57 +0100

kexec: Set IORESOURCE_SYSTEM_RAM for System RAM

Set proper ioresource flags and types for crash kernel
reservation areas.

Signed-off-by: Toshi Kani <toshi.kani@....com>
Signed-off-by: Borislav Petkov <bp@...e.de>
Reviewed-by: Dave Young <dyoung@...hat.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: Baoquan He <bhe@...hat.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: HATAYAMA Daisuke <d.hatayama@...fujitsu.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@...e.com>
Cc: Minfei Huang <mnfhuang@...il.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Toshi Kani <toshi.kani@...com>
Cc: Vivek Goyal <vgoyal@...hat.com>
Cc: kexec@...ts.infradead.org
Cc: linux-arch@...r.kernel.org
Cc: linux-mm <linux-mm@...ck.org>
Link: http://lkml.kernel.org/r/1453841853-11383-8-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 kernel/kexec_core.c | 8 +++++---
 kernel/kexec_file.c | 2 +-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index 8dc6591..8d34308 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -66,13 +66,15 @@ struct resource crashk_res = {
 	.name  = "Crash kernel",
 	.start = 0,
 	.end   = 0,
-	.flags = IORESOURCE_BUSY | IORESOURCE_MEM
+	.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
+	.desc  = IORES_DESC_CRASH_KERNEL
 };
 struct resource crashk_low_res = {
 	.name  = "Crash kernel",
 	.start = 0,
 	.end   = 0,
-	.flags = IORESOURCE_BUSY | IORESOURCE_MEM
+	.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
+	.desc  = IORES_DESC_CRASH_KERNEL
 };
 
 int kexec_should_crash(struct task_struct *p)
@@ -959,7 +961,7 @@ int crash_shrink_memory(unsigned long new_size)
 
 	ram_res->start = end;
 	ram_res->end = crashk_res.end;
-	ram_res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;
+	ram_res->flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM;
 	ram_res->name = "System RAM";
 
 	crashk_res.end = end - 1;
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 007b791..2bfcdc0 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -525,7 +525,7 @@ int kexec_add_buffer(struct kimage *image, char *buffer, unsigned long bufsz,
 	/* Walk the RAM ranges and allocate a suitable range for the buffer */
 	if (image->type == KEXEC_TYPE_CRASH)
 		ret = walk_iomem_res("Crash kernel",
-				     IORESOURCE_MEM | IORESOURCE_BUSY,
+				     IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY,
 				     crashk_res.start, crashk_res.end, kbuf,
 				     locate_mem_hole_callback);
 	else