 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] [PATCH] vmx: Fix single step on debugger
| To: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] vmx: Fix single step on debugger |
| From: | Kouya Shimura <kouya@xxxxxxxxxxxxxx> |
| Date: | Mon, 22 Dec 2008 11:34:09 +0900 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Sun, 21 Dec 2008 18:34:39 -0800 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <C57169E3.110E%keir.fraser@xxxxxxxxxxxxx> |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| References: | <7k7i5w1on4.fsf@xxxxxxxxxxxxxxxxxxxxxxxxxx> <C57169E3.110E%keir.fraser@xxxxxxxxxxxxx> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
Indeed, this fix is hacky but it works well for me. At first, I tried setting GUEST_PENDING_DBG_EXCEPTIONS.BS according to the SDM. As a result, the guest doesn't be killed but never go progress after the STI instruction (i.e. VM exit immediately after VM entry) as long as RFLAGS.TF=1. That is inconvenient for debugging. Is there any other way? Thanks, Kouya Keir Fraser writes: > On 19/12/2008 09:48, "Kouya Shimura" <kouya@xxxxxxxxxxxxxx> wrote: > > > The hvm domain which is being debugged sometimes crashes with the > > following message: > > The fix looks like a dubious hack to me. Wouldn't it at least be a bit > cleaner to mess with DR6.BS (the flag that's actually being checked by the > CPU) rather than messing with the DEBUGCTL.BTF control flag? > > -- Keir > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | RE: [Xen-devel] [PATCH 0/2] MCA support with page offlining, Wang, Shane |
|---|---|
| Next by Date: | [Xen-devel] [patch 0/3]Enable CMCI (Corrected Machine Check Error Interrupt) for Intel CPUs, Ke, Liping |
| Previous by Thread: | Re: [Xen-devel] [PATCH] vmx: Fix single step on debugger, Keir Fraser |
| Next by Thread: | Re: [Xen-devel] [PATCH] vmx: Fix single step on debugger, Keir Fraser |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
