From: Paolo Bonzini <pbonzini@redhat.com>
To: "Zhang, Yang Z" <yang.z.zhang@intel.com>
Cc: "aliguori@us.ibm.com" <aliguori@us.ibm.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Jan Kiszka <jan.kiszka@web.de>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [PATCH v3 5/7] RTC:Add RTC update-ended interrupt support
Date: Fri, 02 Mar 2012 13:13:41 +0100 [thread overview]
Message-ID: <4F50B975.7060202@redhat.com> (raw)
In-Reply-To: <A9667DDFB95DB7438FA9D7D576C3D87E08505E@SHSMSX101.ccr.corp.intel.com>
Il 02/03/2012 08:00, Zhang, Yang Z ha scritto:
> Use a timer to emulate update cycle. When update cycle ended and UIE is setting,
> then raise an interrupt. The timer runs only when UF or AF is cleared.
Isn't AF=0 the common case when the RTC starts, so the timer always runs
until the time crosses midnight?
Paolo
WARNING: multiple messages have this Message-ID (diff)
From: Paolo Bonzini <pbonzini@redhat.com>
To: "Zhang, Yang Z" <yang.z.zhang@intel.com>
Cc: "aliguori@us.ibm.com" <aliguori@us.ibm.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Jan Kiszka <jan.kiszka@web.de>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [Qemu-devel] [PATCH v3 5/7] RTC:Add RTC update-ended interrupt support
Date: Fri, 02 Mar 2012 13:13:41 +0100 [thread overview]
Message-ID: <4F50B975.7060202@redhat.com> (raw)
In-Reply-To: <A9667DDFB95DB7438FA9D7D576C3D87E08505E@SHSMSX101.ccr.corp.intel.com>
Il 02/03/2012 08:00, Zhang, Yang Z ha scritto:
> Use a timer to emulate update cycle. When update cycle ended and UIE is setting,
> then raise an interrupt. The timer runs only when UF or AF is cleared.
Isn't AF=0 the common case when the RTC starts, so the timer always runs
until the time crosses midnight?
Paolo
next prev parent reply other threads:[~2012-03-02 12:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-02 7:00 [PATCH v3 5/7] RTC:Add RTC update-ended interrupt support Zhang, Yang Z
2012-03-02 7:00 ` [Qemu-devel] " Zhang, Yang Z
2012-03-02 12:13 ` Paolo Bonzini [this message]
2012-03-02 12:13 ` Paolo Bonzini
2012-03-02 14:17 ` Zhang, Yang Z
2012-03-02 14:17 ` [Qemu-devel] " Zhang, Yang Z
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