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  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:	Fri, 7 Dec 2007 13:03:41 +0100
From:	Arnd Bergmann <>
Cc:	Paul Mackerras <>,
Subject: Re: [RFC][POWERPC] Provide a way to protect 4k subpages when using 64k pages

On Friday 07 December 2007, Paul Mackerras wrote:
> I have re-purposed the ioperm system call for this.  The old ioperm
> system call never did anything (except return an ENOSYS error) and in
> fact never could have actually been useful for anything on the PowerPC
> architecture, so nothing ever used it.

Couldn't there be a program that relies on ioperm to return -ENOSYS on
powerpc in order to fall back on some other method of I/O access?

The risk of actually breaking something is certainly low, but I think
you can never be sure here, so why not use a new syscall number?

	Arnd <><
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists