From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Dunlap Subject: [PATCH RFC v13 16/20] pvh: Restrict tsc_mode to NEVER_EMULATE for now Date: Mon, 23 Sep 2013 17:49:56 +0100 Message-ID: <1379955000-11050-17-git-send-email-george.dunlap@eu.citrix.com> References: <1379955000-11050-1-git-send-email-george.dunlap@eu.citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1379955000-11050-1-git-send-email-george.dunlap@eu.citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: George Dunlap , Keir Fraser , Tim Deegan , Jan Beulich List-Id: xen-devel@lists.xenproject.org To be implemented. Signed-off-by: George Dunlap Signed-off-by: Mukesh Rathor --- v13: - Only print a warning if tsc_mode != TSC_MODE_DEFAULT CC: Jan Beulich CC: Tim Deegan CC: Keir Fraser --- xen/arch/x86/time.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/xen/arch/x86/time.c b/xen/arch/x86/time.c index c1bbd50..087b301 100644 --- a/xen/arch/x86/time.c +++ b/xen/arch/x86/time.c @@ -1827,6 +1827,22 @@ void tsc_set_info(struct domain *d, d->arch.vtsc = 0; return; } + if ( is_pvh_domain(d) ) + { + /* PVH fixme: support more tsc modes. */ + switch ( tsc_mode ) + { + case TSC_MODE_NEVER_EMULATE: + break; + default: + printk(XENLOG_WARNING + "PVH currently does not support tsc emulation. Setting timer_mode = never_emulate\n"); + /* FALLTHRU */ + case TSC_MODE_DEFAULT: + tsc_mode = TSC_MODE_NEVER_EMULATE; + break; + } + } switch ( d->arch.tsc_mode = tsc_mode ) { -- 1.7.9.5