lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Thu, 23 Feb 2012 02:36:10 -0800
From:	Yinghai Lu <>
To:	"H. Peter Anvin" <>,,
Subject: Re: [tip:x86/urgent] x86, efi: Delete efi_ioremap() and fix
 CONFIG_X86_32 oops

On Wed, Feb 22, 2012 at 7:32 PM, H. Peter Anvin <> wrote:
> On 02/22/2012 06:20 PM, Yinghai Lu wrote:
>> Why is MAXMEM used here?
>> EFI reserved area could be above 4G?
>> if that is the case, you will map all mmio hole below 4g.
> OK, dropping this patch for now, at least from -urgent.
> We really need to restrict the memory types we map, at least without
> ioremap() called on them.  In theory, on x86-64, we could have a
> dedicated "1:1" address for each physical address, but there is no good
> reason we should ever map memory types other than RAM, ACPI and EFI by
> default -- with the possible exception of the low 1 MiB legacy area.

please check attach patch for tip/efi branch.



View attachment "fix_efi_map_end.patch" of type "text/x-patch" (2322 bytes)

Powered by blists - more mailing lists