linux-kernel - Re: [PATCH 2/7] powerpc: introduce ePAPR embedded hypervisor hcall interface

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: <A51DF224-1AB1-43CA-8880-253D7FD837B5@freescale.com>
Date:	Wed, 22 Jun 2011 06:41:34 -0500
From:	Kumar Gala <kumar.gala@...escale.com>
To:	Timur Tabi <timur@...escale.com>
CC:	<benh@...nel.crashing.org>, <greg@...ah.com>, <akpm@...nel.org>,
	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
	<linux-console@...r.kernel.org>
Subject: Re: [PATCH 2/7] powerpc: introduce ePAPR embedded hypervisor hcall interface


On May 19, 2011, at 8:54 AM, Timur Tabi wrote:

> ePAPR hypervisors provide operating system services via a "hypercall"
> interface.  The following steps need to be performed to make an hcall:
> 
> 1. Load r11 with the hcall number
> 2. Load specific other registers with parameters
> 3. Issue instrucion "sc 1"
> 4. The return code is in r3
> 5. Other returned parameters are in other registers.
> 
> To provide this service to the kernel, these steps are wrapped in inline
> assembly functions.  Standard ePAPR hcalls are in epapr_hcalls.h, and Freescale
> extensions are in fsl_hcalls.h.
> 
> Signed-off-by: Timur Tabi <timur@...escale.com>
> ---
> arch/powerpc/include/asm/epapr_hcalls.h |  502 +++++++++++++++++++++++
> arch/powerpc/include/asm/fsl_hcalls.h   |  655 +++++++++++++++++++++++++++++++
> 2 files changed, 1157 insertions(+), 0 deletions(-)
> create mode 100644 arch/powerpc/include/asm/epapr_hcalls.h
> create mode 100644 arch/powerpc/include/asm/fsl_hcalls.h

applied to next

- k
--
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/