From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Grall <julien.grall@linaro.org>
Subject: Re: [PATCH 4/9] xen: arm: turn vtimer traps for cp32/64
 and sysreg into #undef
Date: Thu, 15 Jan 2015 12:27:41 +0000
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To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: xen-devel@lists.xen.org, Tim Deegan <tim@xen.org>, stefano.stabellini@eu.citrix.com
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Hi Ian,

On 15/01/15 10:26, Ian Campbell wrote:
> I'm looking into the vtimer masking and ctxt switching the irq state
> now, once I've got that going exposing the ptimer directly to guests
> ought to be pretty simple.

I don't think we can expose directly the physical timer to the guest.

If the guest tries to read CNTPCT_EL0, it will read the number of ticks
since the host is up.

Regards,

-- 
Julien Grall