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, 3 Nov 2006 16:46:25 -0800 (PST)
From:	Linus Torvalds <>
To:	Chuck Ebbert <>
cc:	linux-kernel <>,
	Andi Kleen <>, Zachary Amsden <>
Subject: Re: [rfc patch] i386: don't save eflags on task switch

On Fri, 3 Nov 2006, Chuck Ebbert wrote:
> There is no real need to save eflags in switch_to().  Instead,
> we can keep a constant value in the thread_struct and always
> restore that.

I don't really see the point. The "pushfl" isn't the expensive part, and 
it gives sane and expected semantics.

The "popfl" is the expensive part, and that's the thing that can't really 
even be removed.

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