linux-kernel - Re: [PATCH] Add VDSO time function support for x86 32-bit kernel

lists.openwall.net		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]

Message-ID: <1355383038.18653.2.camel@wall-e>
Date:	Thu, 13 Dec 2012 08:17:18 +0100
From:	Stefani Seibold <stefani@...bold.net>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org, x86@...nel.org, tglx@...utronix.de,
	mingo@...hat.com, ak@...ux.intel.com, aarcange@...hat.com,
	john.stultz@...aro.org, luto@...capital.net
Subject: Re: [PATCH] Add VDSO time function support for x86 32-bit kernel

Am Mittwoch, den 12.12.2012, 22:47 -0800 schrieb H. Peter Anvin:
> Should be a simple matter of sharing pages.  Look perhaps at the x32 vdso for a hint.
> 


> >
> >Any idea or clean solution how i can map the 64 bit vgtod into the 32
> >bit address space? Thats the only problem i see.
> >

No, i see no special handling for x32 vdso to do this. I am not sure if
x32 vdso can access the 64 bit address space of vsyscall_gtod_data. I
can't test this due the lack of a x32 abi system.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/