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mx.google.com; dkim=pass header.i=@microsoft.com header.s=selector1 header.b=art+rjw9; spf=pass (google.com: domain of kys@microsoft.com designates 104.47.32.121 as permitted sender) smtp.mailfrom=kys@microsoft.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=microsoft.com Authentication-Results: mx.google.com; dkim=pass header.i=@microsoft.com header.s=selector1 header.b=art+rjw9; spf=pass (google.com: domain of kys@microsoft.com designates 104.47.32.121 as permitted sender) smtp.mailfrom=kys@microsoft.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=microsoft.com From: KY Srinivasan To: "Michael Kelley (EOSG)" , "gregkh@linuxfoundation.org" , "linux-kernel@vger.kernel.org" , "devel@linuxdriverproject.org" , "olaf@aepfle.de" , "apw@canonical.com" , "vkuznets@redhat.com" , "jasowang@redhat.com" , "leann.ogasawara@canonical.com" , "marcelo.cerri@canonical.com" , Stephen Hemminger Subject: RE: [PATCH char-misc 1/2] Drivers: hv: vmbus: Remove x86 MSR refs in arch independent code Thread-Topic: [PATCH char-misc 1/2] Drivers: hv: vmbus: Remove x86 MSR refs in arch independent code Thread-Index: AQHT5mTeFHs0S8tFEE6HonExa6h3IqQry+KQ Date: Sat, 12 May 2018 08:37:47 +0000 Message-ID: References: <1525739851-54919-1-git-send-email-mikelley@microsoft.com> <1525739851-54919-2-git-send-email-mikelley@microsoft.com> In-Reply-To: <1525739851-54919-2-git-send-email-mikelley@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [210.13.83.2] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;MW2PR2101MB0938;7:H+4ini9sRuyVqOu4cVDty7Lz4Kufl5/fDzTMu7Dx+VB4f72xHA4Xi/dOdqYVeYsQfVHkhl1JE1V3L1wWQn8JO0uvm6By9gkKYVXbxtryHW9xfSCZXoiOrziJUMOzrD8AhkZKbFB4c5COU3g2Dxkv2VDliHrrj6xJipfbG3HFQUwMe9j/OBgJL2vSUW59kf5iKcGR+ly70aPejafhckIBOPD+9guAKmflrQLqtKmshVbAAxQFGvuMN+wiJNrScLND;20:EOiUP1IEcU8Xz9FtJoIgODu3YKYNT22/eNZGKP3iRqqhni0KMBCurY3BS2Z200+QxDIG0tY3ezyWe5uY/q1jH6OT3IRRLs/488MjKOdT485VqTo+eUXkVcHBS1olpt7YiJVxL8v7YhYhwAq6AfLLyzI87iXKh/HXWGjwH3BzRgo= x-ms-exchange-antispam-srfa-diagnostics: SOS; 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x-microsoft-antispam-message-info: xdYu0wMdE9x/4SOdNiw3czAwCn9cLScqtAeK7dl9I48NL0WqLz+f/rPwq6v8odyDSe6lVPW7+k2bVyo7oLnEAytKd67G9faaz717Yl+AsyprUEdbBqGj4jEpHNKmUKd12/XmFpNWEnKLkwl857JBLQcHr6TlByWuORGpoHnRtAm7OAyzlvvvuRhBZP9sdJbV spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: 7ea9b57b-5e12-4369-876d-08d5b7e3a404 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7ea9b57b-5e12-4369-876d-08d5b7e3a404 X-MS-Exchange-CrossTenant-originalarrivaltime: 12 May 2018 08:37:47.8762 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2PR2101MB0938 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1599854238222252131?= X-GMAIL-MSGID: =?utf-8?q?1600246798225576759?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: > -----Original Message----- > From: mhkelley58@gmail.com > Sent: Tuesday, May 8, 2018 8:38 AM > To: gregkh@linuxfoundation.org; linux-kernel@vger.kernel.org; > devel@linuxdriverproject.org; olaf@aepfle.de; apw@canonical.com; > vkuznets@redhat.com; jasowang@redhat.com; > leann.ogasawara@canonical.com; marcelo.cerri@canonical.com; Stephen > Hemminger ; KY Srinivasan > > Subject: [PATCH char-misc 1/2] Drivers: hv: vmbus: Remove x86 MSR refs in > arch independent code >=20 > From: Michael Kelley >=20 > In architecture independent code for manipulating Hyper-V synthetic timer= s > and synthetic interrupts, pass in an ordinal number identifying the timer > or interrupt, rather than an actual MSR register address. Then in > x86/x64 specific code, map the ordinal number to the appropriate MSR. > This change facilitates the introduction of an ARM64 version of Hyper-V, > which uses the same synthetic timers and interrupts, but a different > mechanism for accessing them. >=20 > Signed-off-by: Michael Kelley > --- > arch/x86/include/asm/mshyperv.h | 12 ++++++++---- > drivers/hv/hv.c | 20 ++++++++------------ > 2 files changed, 16 insertions(+), 16 deletions(-) >=20 > diff --git a/arch/x86/include/asm/mshyperv.h > b/arch/x86/include/asm/mshyperv.h > index b90e796..caf9035 100644 > --- a/arch/x86/include/asm/mshyperv.h > +++ b/arch/x86/include/asm/mshyperv.h > @@ -75,8 +75,10 @@ static inline void vmbus_signal_eom(struct > hv_message *msg, u32 old_msg_type) > } > } >=20 > -#define hv_init_timer(timer, tick) wrmsrl(timer, tick) > -#define hv_init_timer_config(config, val) wrmsrl(config, val) > +#define hv_init_timer(timer, tick) \ > + wrmsrl(HV_X64_MSR_STIMER0_COUNT + (2*timer), tick) > +#define hv_init_timer_config(timer, val) \ > + wrmsrl(HV_X64_MSR_STIMER0_CONFIG + (2*timer), val) Why are we stepping in units of 2? K. Y