linux-kernel - Re: [PATCH] x86/kexec: Exclude GART aperture from vmcore

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Message-ID: <20171106095638.7iwlyjmlom3tqelt@dwarf.suse.cz>
Date:   Mon, 6 Nov 2017 10:56:38 +0100
From:   Jiri Bohac <jbohac@...e.cz>
To:     Baoquan He <bhe@...hat.com>
Cc:     David Airlie <airlied@...ux.ie>, Dave Young <dyoung@...hat.com>,
        Vivek Goyal <vgoyal@...hat.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Toshi Kani <toshi.kani@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
        kexec@...ts.infradead.org, Borislav Petkov <bp@...en8.de>
Subject: Re: [PATCH] x86/kexec: Exclude GART aperture from vmcore

On Mon, Nov 06, 2017 at 05:27:29PM +0800, Baoquan He wrote:
> > 	00100000-c7e7ffff : System RAM
> > 	  0b000000-0b792eb5 : Kernel code
> > 	  0b792eb6-0bd5d47f : Kernel data
> > 	  0c274000-0c3c8fff : Kernel bss
> > 	  b7000000-c6ffffff : Crash kernel
> 
> It's weird, gart aperture located in crashkernel region? 

Ooops! I sent you a /proc/iomem from a different boot than the
dmesg, whith different crashkernel= commandline. Sorry, this is
the correct /proc/iomem:


	00000000-00000fff : Reserved
	00001000-0009d7ff : System RAM
	0009d800-0009ffff : Reserved
	000a0000-000bffff : PCI Bus 0000:00
	000c0000-000cafff : PCI Bus 0000:00
	  000c0000-000cafff : Video ROM
	000cb000-000ccfff : Adapter ROM
	000ce000-000fffff : Reserved
	  000f0000-000fffff : System ROM
	00100000-c7e7ffff : System RAM
	  c3000000-c77fffff : Crash kernel
	c7e80000-c7e8afff : ACPI Tables
	c7e8b000-c7e8cfff : ACPI Non-volatile Storage
	c7e8d000-c7ffffff : Reserved
	c8000000-ce0fffff : PCI Bus 0000:00
	  c8000000-c80003ff : IOAPIC 1
	  c8014000-c80143ff : 0000:00:11.0
	    c8014000-c80143ff : ahci
	  c8014400-c80144ff : 0000:00:12.2
	    c8014400-c80144ff : ehci_hcd
	  c8014800-c80148ff : 0000:00:13.2
	    c8014800-c80148ff : ehci_hcd
	  c8015000-c8015fff : 0000:00:12.0
	    c8015000-c8015fff : ohci_hcd
	  c8016000-c8016fff : 0000:00:12.1
	    c8016000-c8016fff : ohci_hcd
	  c8017000-c8017fff : 0000:00:13.0
	    c8017000-c8017fff : ohci_hcd
	  c8018000-c8018fff : 0000:00:13.1
	    c8018000-c8018fff : ohci_hcd
	  c8019000-c8019fff : 0000:00:14.5
	    c8019000-c8019fff : ohci_hcd
	  ca000000-cdffffff : PCI Bus 0000:01
	    ca000000-cbffffff : 0000:01:00.0
	      ca000000-cbffffff : bnx2
	    cc000000-cdffffff : 0000:01:00.1
	      cc000000-cdffffff : bnx2
	  ce000000-ce0fffff : PCI Bus 0000:02
	    ce000000-ce00ffff : 0000:02:06.0
	d0000000-d7ffffff : PCI Bus 0000:00
	  d0000000-d7ffffff : PCI Bus 0000:02
	    d0000000-d7ffffff : 0000:02:06.0
	e0000000-efffffff : Reserved
	  e0000000-efffffff : pnp 00:00
	    e0000000-e02fffff : PCI MMCONFIG 0000 [bus 00-02]
	fec00000-fec0ffff : Reserved
	  fec00000-fec003ff : IOAPIC 0
	fec10000-fec1001f : pnp 00:05
	fed00000-fed003ff : HPET 2
	  fed00000-fed003ff : PNP0103:00
	fed40000-fed45000 : PCI Bus 0000:00
	fee00000-fee00fff : Local APIC
	  fee00000-fee00fff : Reserved
	    fee00000-fee00fff : pnp 00:00
	fff00000-ffffffff : Reserved
	  fff00000-ffffffff : pnp 00:05
	100000000-837ffffff : System RAM
	  4df000000-4df792eb5 : Kernel code
	  4df792eb6-4dfd5d47f : Kernel data
	  4e0274000-4e03c8fff : Kernel bss
	  831000000-8374fffff : Crash kernel

Sorry for the confusion!

-- 
Jiri Bohac <jbohac@...e.cz>
SUSE Labs, Prague, Czechia