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Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 as well as x86_32

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From: H. Peter Anvin
Subject: Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 as well as x86_32
Date: Friday, April 9, 2010 - 3:44 pm

On 04/09/2010 03:35 PM, Andy Isaacson wrote:

Looks like this is something the kernel is assigning to it.  It *does*
get marked reserved:


... but that doesn't seem to keep the PCI code from assigning anything
there.  This is a Very Bad thing in general... if we're assigning
devices to areas marked reserved, we have a huge problem.

	-hpa
--
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[PATCH] x86: Reserve legacy VGA MMIO area for x86_64 as we ..., Bjorn Helgaas, (Wed Apr 7, 2:06 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai, (Wed Apr 7, 3:45 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Bjorn Helgaas, (Wed Apr 7, 4:05 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai, (Wed Apr 7, 4:22 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Wed Apr 7, 4:43 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Andy Isaacson, (Wed Apr 7, 5:19 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Bjorn Helgaas, (Wed Apr 7, 8:24 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Wed Apr 7, 9:42 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Wed Apr 7, 10:00 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Bjorn Helgaas, (Thu Apr 8, 6:04 am)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Andy Isaacson, (Thu Apr 8, 2:40 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Bjorn Helgaas, (Fri Apr 9, 9:04 am)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Fri Apr 9, 9:44 am)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai, (Fri Apr 9, 10:22 am)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Fri Apr 9, 11:23 am)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Guenter Roeck, (Fri Apr 9, 11:55 am)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai, (Fri Apr 9, 12:55 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Fri Apr 9, 1:11 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Guenter Roeck, (Fri Apr 9, 1:31 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Fri Apr 9, 1:44 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Guenter Roeck, (Fri Apr 9, 2:01 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Andy Isaacson, (Fri Apr 9, 3:21 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai Lu, (Fri Apr 9, 3:27 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Andy Isaacson, (Fri Apr 9, 3:35 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Fri Apr 9, 3:42 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Alan Cox, (Fri Apr 9, 3:42 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Fri Apr 9, 3:44 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Alan Cox, (Fri Apr 9, 3:51 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Alan Cox, (Fri Apr 9, 3:54 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai, (Fri Apr 9, 3:54 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Fri Apr 9, 3:55 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., H. Peter Anvin, (Fri Apr 9, 3:55 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai, (Fri Apr 9, 4:01 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Andy Isaacson, (Fri Apr 9, 5:00 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai, (Fri Apr 9, 6:10 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Andy Isaacson, (Fri Apr 9, 6:43 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai, (Fri Apr 9, 6:48 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Andy Isaacson, (Fri Apr 9, 6:57 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai, (Fri Apr 9, 7:46 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Andy Isaacson, (Mon Apr 12, 11:54 am)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Yinghai, (Mon Apr 12, 12:34 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Andy Isaacson, (Mon Apr 12, 12:48 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., yinghai.lu@oracle.com, (Mon Apr 12, 12:55 pm)
Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 a ..., Andy Isaacson, (Mon Apr 12, 1:02 pm)
[PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e820 map, Yinghai, (Mon Apr 12, 3:32 pm)
[PATCH -v2 2/2] x86,pci, acpi: Inherent BUSY flag when set ..., Yinghai, (Mon Apr 12, 3:33 pm)
Re: [PATCH -v2 2/2] x86,pci, acpi: Inherent BUSY flag when ..., Jesse Barnes, (Mon Apr 12, 3:44 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Bjorn Helgaas, (Tue Apr 13, 2:02 pm)
Re: [PATCH -v2 2/2] x86,pci, acpi: Inherent BUSY flag when ..., Bjorn Helgaas, (Tue Apr 13, 2:02 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Tue Apr 13, 2:08 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., H. Peter Anvin, (Tue Apr 13, 2:09 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Tue Apr 13, 2:11 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., H. Peter Anvin, (Tue Apr 13, 2:18 pm)
[PATCH -v3 1/3] x86: Reserve [0xa0000, 0x100000] in e820 map, Yinghai, (Tue Apr 13, 2:22 pm)
[PATCH -v3 2/3] x86,pci, acpi: host bridge windows inherit ..., Yinghai, (Tue Apr 13, 2:23 pm)
[PATCH -v3 3/3] pci: don't allocate from a BUSY bus resource, Yinghai, (Tue Apr 13, 2:24 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Tue Apr 13, 2:42 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., H. Peter Anvin, (Tue Apr 13, 2:58 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Tue Apr 13, 3:29 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Tue Apr 13, 3:39 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., H. Peter Anvin, (Tue Apr 13, 3:41 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Tue Apr 13, 3:58 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., H. Peter Anvin, (Tue Apr 13, 4:02 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., H. Peter Anvin, (Tue Apr 13, 4:03 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Tue Apr 13, 4:03 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., H. Peter Anvin, (Tue Apr 13, 4:07 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Tue Apr 13, 4:09 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Tue Apr 13, 5:57 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Bjorn Helgaas, (Wed Apr 14, 9:55 am)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai Lu, (Wed Apr 14, 10:21 am)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Andy Isaacson, (Wed Apr 14, 12:25 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Wed Apr 14, 12:27 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Andy Isaacson, (Wed Apr 14, 12:43 pm)
Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e8 ..., Yinghai, (Wed Apr 14, 12:49 pm)
[PATCH -v4 1/3] x86: Reserve [0xa0000, 0x100000] in e820 map, Yinghai, (Tue Apr 20, 10:33 pm)
[PATCH 2/3] x86, resource: Add reserve_region_with_split_c ..., Yinghai, (Tue Apr 20, 10:34 pm)
[PATCH 3/3] x86,pci,acpi: Handle invalid _CRS, Yinghai, (Tue Apr 20, 10:35 pm)
Re: [PATCH 3/3] x86,pci,acpi: Handle invalid _CRS, Bjorn Helgaas, (Wed Apr 21, 8:21 am)
Re: [PATCH 3/3] x86,pci,acpi: Handle invalid _CRS, Yinghai Lu, (Wed Apr 21, 9:45 am)
Re: [PATCH 3/3] x86,pci,acpi: Handle invalid _CRS, Bjorn Helgaas, (Wed Apr 21, 9:59 am)
Re: [PATCH -v4 1/3] x86: Reserve [0xa0000, 0x100000] in e8 ..., Andy Isaacson, (Wed Apr 21, 12:31 pm)
Re: [PATCH 3/3] x86,pci,acpi: Handle invalid _CRS, H. Peter Anvin, (Wed Apr 21, 3:33 pm)
Re: [PATCH 3/3] x86,pci,acpi: Handle invalid _CRS, Bjorn Helgaas, (Wed Apr 21, 4:04 pm)
Re: [PATCH 3/3] x86,pci,acpi: Handle invalid _CRS, H. Peter Anvin, (Wed Apr 21, 4:10 pm)
Re: [PATCH 3/3] x86,pci,acpi: Handle invalid _CRS, Yinghai, (Wed Apr 21, 4:43 pm)
Re: [PATCH 3/3] x86,pci,acpi: Handle invalid _CRS, H. Peter Anvin, (Wed Apr 21, 5:02 pm)
Re: [PATCH 3/3] x86,pci,acpi: Handle invalid _CRS, Yinghai, (Wed Apr 21, 5:06 pm)
[PATCH] x86/PCI: never allocate PCI MMIO resources below B ..., Bjorn Helgaas, (Fri Apr 23, 4:05 pm)
Re: [PATCH -v3 1/3] x86: Reserve [0xa0000, 0x100000] in e8 ..., H. Peter Anvin, (Fri Apr 23, 4:30 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., H. Peter Anvin, (Fri Apr 23, 4:44 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., Yinghai Lu, (Fri Apr 23, 5:36 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., R. Andrew Bailey, (Mon Apr 26, 5:50 am)
Re: [PATCH -v3 1/3] x86: Reserve [0xa0000, 0x100000] in e8 ..., Jesse Barnes, (Mon Apr 26, 8:35 am)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., Bjorn Helgaas, (Mon Apr 26, 8:40 am)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., Andy Isaacson, (Mon Apr 26, 11:34 am)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., Jesse Barnes, (Mon Apr 26, 12:31 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., Bjorn Helgaas, (Mon Apr 26, 1:27 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., Jesse Barnes, (Mon Apr 26, 1:37 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., Yinghai, (Mon Apr 26, 2:07 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., H. Peter Anvin, (Mon Apr 26, 2:12 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., H. Peter Anvin, (Mon Apr 26, 2:19 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., Jesse Barnes, (Mon Apr 26, 2:25 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., H. Peter Anvin, (Mon Apr 26, 2:44 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., jacob pan, (Mon Apr 26, 2:44 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., Jesse Barnes, (Mon Apr 26, 2:53 pm)
Re: [PATCH] x86/PCI: never allocate PCI MMIO resources bel ..., Yinghai Lu, (Mon Apr 26, 2:59 pm)
[PATCH -v5] reserve a0000 - 0x10000, Yinghai, (Mon Apr 26, 3:04 pm)
[PATCH -v5 1/3] x86: Reserve [0xa0000, 0x100000] in e820 map, Yinghai, (Mon Apr 26, 3:04 pm)
[PATCH -v5 2/3] x86: Remove probe_roms for 32bit, Yinghai, (Mon Apr 26, 3:04 pm)
[PATCH -v5 3/3] x86, resource: Add reserve_region_with_spl ..., Yinghai, (Mon Apr 26, 3:04 pm)