From: Borislav Petkov <bp@alien8.de>
To: Ingo Molnar <mingo@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Baoquan He <bhe@redhat.com>,
Dan Williams <dan.j.williams@intel.com>,
Dave Young <dyoung@redhat.com>,
Denys Vlasenko <dvlasenk@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
Jiri Kosina <jkosina@suse.cz>, Joerg Roedel <jroedel@suse.de>,
Juergen Gross <jgross@suse.com>,
linux-arch@vger.kernel.org, linux-mm <linux-mm@kvack.org>,
Mark Salter <msalter@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Tony Luck <tony.luck@intel.com>, WANG Chao <chaowang@redhat.com>
Subject: [PATCH 04/17] x86/e820: Set System RAM type and descriptor
Date: Tue, 26 Jan 2016 21:57:20 +0100 [thread overview]
Message-ID: <1453841853-11383-5-git-send-email-bp@alien8.de> (raw)
In-Reply-To: <1453841853-11383-1-git-send-email-bp@alien8.de>
From: Toshi Kani <toshi.kani@hpe.com>
Change e820_reserve_resources() to set 'flags' and 'desc' from
e820 types.
Set E820_RESERVED_KERN and E820_RAM's (System RAM) io resource type to
IORESOURCE_SYSTEM_RAM.
Do the same for "Kernel data", "Kernel code", and "Kernel bss", which
are child nodes of System RAM.
I/O resource descriptor is set to 'desc' for entries that are (and will
be) target ranges of walk_iomem_res() and region_intersects().
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Juergen Gross <jgross@suse.com>
Cc: linux-arch@vger.kernel.org
Cc: linux-mm <linux-mm@kvack.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: WANG Chao <chaowang@redhat.com>
Link: http://lkml.kernel.org/r/1452020081-26534-4-git-send-email-toshi.kani@hpe.com
Signed-off-by: Borislav Petkov <bp@suse.de>
---
arch/x86/kernel/e820.c | 38 +++++++++++++++++++++++++++++++++++++-
arch/x86/kernel/setup.c | 6 +++---
2 files changed, 40 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 569c1e4f96fe..837365f10912 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -925,6 +925,41 @@ static const char *e820_type_to_string(int e820_type)
}
}
+static unsigned long e820_type_to_iomem_type(int e820_type)
+{
+ switch (e820_type) {
+ case E820_RESERVED_KERN:
+ case E820_RAM:
+ return IORESOURCE_SYSTEM_RAM;
+ case E820_ACPI:
+ case E820_NVS:
+ case E820_UNUSABLE:
+ case E820_PRAM:
+ case E820_PMEM:
+ default:
+ return IORESOURCE_MEM;
+ }
+}
+
+static unsigned long e820_type_to_iores_desc(int e820_type)
+{
+ switch (e820_type) {
+ case E820_ACPI:
+ return IORES_DESC_ACPI_TABLES;
+ case E820_NVS:
+ return IORES_DESC_ACPI_NV_STORAGE;
+ case E820_PMEM:
+ return IORES_DESC_PERSISTENT_MEMORY;
+ case E820_PRAM:
+ return IORES_DESC_PERSISTENT_MEMORY_LEGACY;
+ case E820_RESERVED_KERN:
+ case E820_RAM:
+ case E820_UNUSABLE:
+ default:
+ return IORES_DESC_NONE;
+ }
+}
+
static bool do_mark_busy(u32 type, struct resource *res)
{
/* this is the legacy bios/dos rom-shadow + mmio region */
@@ -967,7 +1002,8 @@ void __init e820_reserve_resources(void)
res->start = e820.map[i].addr;
res->end = end;
- res->flags = IORESOURCE_MEM;
+ res->flags = e820_type_to_iomem_type(e820.map[i].type);
+ res->desc = e820_type_to_iores_desc(e820.map[i].type);
/*
* don't register the region that could be conflicted with
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index d3d80e6d42a2..aa52c1009475 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -152,21 +152,21 @@ static struct resource data_resource = {
.name = "Kernel data",
.start = 0,
.end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+ .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource code_resource = {
.name = "Kernel code",
.start = 0,
.end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+ .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource bss_resource = {
.name = "Kernel bss",
.start = 0,
.end = 0,
- .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+ .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
--
2.3.5
next prev parent reply other threads:[~2016-01-26 20:57 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1453841853-11383-1-git-send-email-bp@alien8.de>
2016-01-26 20:57 ` [PATCH 01/17] resource: Add System RAM resource type Borislav Petkov
2016-01-30 9:28 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 02/17] resource: Handle resource flags properly Borislav Petkov
2016-01-30 9:28 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 03/17] resource: Add I/O resource descriptor Borislav Petkov
2016-01-30 9:28 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` Borislav Petkov [this message]
2016-01-30 9:29 ` [tip:core/resources] x86/e820: Set System RAM type and descriptor tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 05/17] ia64: " Borislav Petkov
2016-01-30 9:29 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 06/17] arch: Set IORESOURCE_SYSTEM_RAM flag for System RAM Borislav Petkov
2016-01-30 9:29 ` [tip:core/resources] " tip-bot for Toshi Kani
[not found] ` <1453841853-11383-1-git-send-email-bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
2016-01-26 20:57 ` [PATCH 07/17] kexec: Set IORESOURCE_SYSTEM_RAM " Borislav Petkov
2016-01-30 9:30 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 08/17] xen, mm: Set IORESOURCE_SYSTEM_RAM to " Borislav Petkov
2016-01-30 9:30 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 09/17] drivers: Initialize resource entry to zero Borislav Petkov
2016-01-30 9:31 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 10/17] resource: Change walk_system_ram() to use System RAM type Borislav Petkov
2016-01-30 9:31 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 11/17] arm/samsung: Change s3c_pm_run_res() " Borislav Petkov
2016-01-30 9:31 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 12/17] memremap: Change region_intersects() to take @flags and @desc Borislav Petkov
2016-01-26 21:08 ` Dan Williams
2016-01-30 9:32 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 13/17] resource: Add walk_iomem_res_desc() Borislav Petkov
2016-01-30 9:32 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 14/17] x86, kexec, nvdimm: Use walk_iomem_res_desc() for iomem search Borislav Petkov
2016-01-30 9:32 ` [tip:core/resources] x86, kexec, nvdimm: Use walk_iomem_res_desc( ) " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 15/17] x86/kexec: Remove walk_iomem_res() call with GART type Borislav Petkov
2016-01-30 9:33 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 16/17] resource: Kill walk_iomem_res() Borislav Petkov
2016-01-30 9:33 ` [tip:core/resources] " tip-bot for Toshi Kani
2016-01-26 20:57 ` [PATCH 17/17] ACPI/EINJ: Allow memory error injection to NVDIMM Borislav Petkov
2016-01-30 9:33 ` [tip:core/resources] " tip-bot for Toshi Kani
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