From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755860AbYJUUBY (ORCPT ); Tue, 21 Oct 2008 16:01:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752238AbYJUUBO (ORCPT ); Tue, 21 Oct 2008 16:01:14 -0400 Received: from relay2.sgi.com ([192.48.171.30]:50759 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752020AbYJUUBN (ORCPT ); Tue, 21 Oct 2008 16:01:13 -0400 Date: Tue, 21 Oct 2008 15:01:12 -0500 From: Russ Anderson To: Ingo Molnar , tglx@linutronix.de, linux-kernel@vger.kernel.org Cc: Russ Anderson Subject: [PATCH 2/3] x86: Add UV memory protection bios call Message-ID: <20081021200112.GD32545@sgi.com> Reply-To: Russ Anderson Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add UV bios call to change memory protections. Signed-off-by: Russ Anderson --- arch/x86/kernel/bios_uv.c | 8 ++++++++ include/asm-x86/uv/bios.h | 10 +++++++++- 2 files changed, 17 insertions(+), 1 deletion(-) Index: linux/arch/x86/kernel/bios_uv.c =================================================================== --- linux.orig/arch/x86/kernel/bios_uv.c 2008-10-21 14:55:18.000000000 -0500 +++ linux/arch/x86/kernel/bios_uv.c 2008-10-21 14:55:24.000000000 -0500 @@ -134,6 +134,14 @@ uv_bios_mq_watchlist_free(int blade, int } EXPORT_SYMBOL_GPL(uv_bios_mq_watchlist_free); +s64 +uv_bios_change_memprotect(u64 paddr, u64 len, enum uv_memprotect perms) +{ + return uv_bios_call_irqsave(UV_BIOS_MEMPROTECT, paddr, len, + perms, 0, 0); +} +EXPORT_SYMBOL_GPL(uv_bios_change_memprotect); + s64 uv_bios_freq_base(u64 clock_type, u64 *ticks_per_second) { return uv_bios_call(UV_BIOS_FREQ_BASE, clock_type, Index: linux/include/asm-x86/uv/bios.h =================================================================== --- linux.orig/include/asm-x86/uv/bios.h 2008-10-21 14:55:18.000000000 -0500 +++ linux/include/asm-x86/uv/bios.h 2008-10-21 14:55:24.000000000 -0500 @@ -34,7 +34,8 @@ enum uv_bios_cmd { UV_BIOS_GET_SN_INFO, UV_BIOS_FREQ_BASE, UV_BIOS_WATCHLIST_ALLOC, - UV_BIOS_WATCHLIST_FREE + UV_BIOS_WATCHLIST_FREE, + UV_BIOS_MEMPROTECT }; /* @@ -82,6 +83,12 @@ union uv_watchlist_u { }; }; +enum uv_memprotect { + UV_MEMPROT_RESTRICT_ACCESS, + UV_MEMPROT_ALLOW_AMO, + UV_MEMPROT_ALLOW_RW +}; + /* * bios calls have 6 parameters */ @@ -94,6 +101,7 @@ extern s64 uv_bios_freq_base(u64, u64 *) extern int uv_bios_mq_watchlist_alloc(int, void *, unsigned int, unsigned long *); extern int uv_bios_mq_watchlist_free(int, int); +extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect); extern void uv_bios_init(void); -- Russ Anderson, OS RAS/Partitioning Project Lead SGI - Silicon Graphics Inc rja@sgi.com