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Re: [Xen-devel] How can i redirect the writes to the console from the HV
| To: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] How can i redirect the writes to the console from the HVM (port 0xe9) to Qemu? |
| From: | Tom Rotenberg <tom.rotenberg@xxxxxxxxx> |
| Date: | Tue, 4 Aug 2009 18:50:05 +0300 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Tue, 04 Aug 2009 08:50:28 -0700 |
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Great, thanks! On Tue, Aug 4, 2009 at 6:26 PM, Keir Fraser<keir.fraser@xxxxxxxxxxxxx> wrote: > On 04/08/2009 15:31, "Tom Rotenberg" <tom.rotenberg@xxxxxxxxx> wrote: > >> Does anyone know how can i register my own "hook" function on this >> port, without modifying the code in hvm.c? Is there a chain of writes? > > You need to modify hvm_print_line() in hvm.c to return X86EMUL_UNHANDLEABLE > rather than X86EMUL_OKAY. This will cause Xen to think that the handler > could not handle the port access and so fall back to sending the port access > to qemu, which is what you want. > > -- Keir > > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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