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:	Sat, 01 Feb 2014 12:29:01 -0800
From:	"H. Peter Anvin" <>
Subject: Re: [PATCH 4/4] Add 32 bit VDSO time support for 64 bit kernel

On 02/01/2014 07:32 AM, wrote:
> This kind of type hacking could be prevent in the future by doing a call to the
> 64 bit code by the following sequence:
> - Compile the arch/x86/vdso/vclock_gettime.c as 64 bit, but only generate
>   the assembler output.
> - Next compile a 32 bit object by including the 64 bit vclock_gettime.s
>   prefixed with .code64
> - At least we need a trampolin code which invokes the 64 bit code and do
>   the API conversation (64 bit longs to 32 bit longs), like the
>   followig snipped:

Honestly, I think the overhead of the mode switch would ruin a lot of
the advantages with the vdso.


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