All of lore.kernel.org
 help / color / mirror / Atom feed
From: Boqun Feng <boqun.feng@gmail.com>
To: linux-hyperv@vger.kernel.org, linux-input@vger.kernel.org,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	linux-scsi@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: "K. Y. Srinivasan" <kys@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	Stephen Hemminger <sthemmin@microsoft.com>,
	Wei Liu <wei.liu@kernel.org>, Jiri Kosina <jikos@kernel.org>,
	Benjamin Tissoires <benjamin.tissoires@redhat.com>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	Michael Kelley <mikelley@microsoft.com>,
	will@kernel.org, ardb@kernel.org, arnd@arndb.de,
	catalin.marinas@arm.com, mark.rutland@arm.com, maz@kernel.org,
	Boqun Feng <boqun.feng@gmail.com>
Subject: [PATCH v4 06/11] hv: hyperv.h: Introduce some hvpfn helper functions
Date: Wed, 16 Sep 2020 11:48:12 +0800	[thread overview]
Message-ID: <20200916034817.30282-7-boqun.feng@gmail.com> (raw)
In-Reply-To: <20200916034817.30282-1-boqun.feng@gmail.com>

When a guest communicate with the hypervisor, it must use HV_HYP_PAGE to
calculate PFN, so introduce a few hvpfn helper functions as the
counterpart of the page helper functions. This is the preparation for
supporting guest whose PAGE_SIZE is not 4k.

Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
---
 include/linux/hyperv.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 83456dc181a8..1ce131f29f3b 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1691,4 +1691,9 @@ static inline unsigned long virt_to_hvpfn(void *addr)
 	return  paddr >> HV_HYP_PAGE_SHIFT;
 }
 
+#define NR_HV_HYP_PAGES_IN_PAGE	(PAGE_SIZE / HV_HYP_PAGE_SIZE)
+#define offset_in_hvpage(ptr)	((unsigned long)(ptr) & ~HV_HYP_PAGE_MASK)
+#define HVPFN_UP(x)	(((x) + HV_HYP_PAGE_SIZE-1) >> HV_HYP_PAGE_SHIFT)
+#define page_to_hvpfn(page)	(page_to_pfn(page) * NR_HV_HYP_PAGES_IN_PAGE)
+
 #endif /* _HYPERV_H */
-- 
2.28.0


WARNING: multiple messages have this Message-ID (diff)
From: Boqun Feng <boqun.feng@gmail.com>
To: linux-hyperv@vger.kernel.org, linux-input@vger.kernel.org,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	linux-scsi@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: mark.rutland@arm.com, maz@kernel.org,
	Wei Liu <wei.liu@kernel.org>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Stephen Hemminger <sthemmin@microsoft.com>,
	arnd@arndb.de, "Martin K. Petersen" <martin.petersen@oracle.com>,
	ardb@kernel.org, will@kernel.org,
	Haiyang Zhang <haiyangz@microsoft.com>,
	Jiri Kosina <jikos@kernel.org>, Boqun Feng <boqun.feng@gmail.com>,
	Michael Kelley <mikelley@microsoft.com>,
	Benjamin Tissoires <benjamin.tissoires@redhat.com>,
	catalin.marinas@arm.com, Jakub Kicinski <kuba@kernel.org>,
	"K. Y. Srinivasan" <kys@microsoft.com>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	"David S. Miller" <davem@davemloft.net>
Subject: [PATCH v4 06/11] hv: hyperv.h: Introduce some hvpfn helper functions
Date: Wed, 16 Sep 2020 11:48:12 +0800	[thread overview]
Message-ID: <20200916034817.30282-7-boqun.feng@gmail.com> (raw)
In-Reply-To: <20200916034817.30282-1-boqun.feng@gmail.com>

When a guest communicate with the hypervisor, it must use HV_HYP_PAGE to
calculate PFN, so introduce a few hvpfn helper functions as the
counterpart of the page helper functions. This is the preparation for
supporting guest whose PAGE_SIZE is not 4k.

Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
---
 include/linux/hyperv.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 83456dc181a8..1ce131f29f3b 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1691,4 +1691,9 @@ static inline unsigned long virt_to_hvpfn(void *addr)
 	return  paddr >> HV_HYP_PAGE_SHIFT;
 }
 
+#define NR_HV_HYP_PAGES_IN_PAGE	(PAGE_SIZE / HV_HYP_PAGE_SIZE)
+#define offset_in_hvpage(ptr)	((unsigned long)(ptr) & ~HV_HYP_PAGE_MASK)
+#define HVPFN_UP(x)	(((x) + HV_HYP_PAGE_SIZE-1) >> HV_HYP_PAGE_SHIFT)
+#define page_to_hvpfn(page)	(page_to_pfn(page) * NR_HV_HYP_PAGES_IN_PAGE)
+
 #endif /* _HYPERV_H */
-- 
2.28.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2020-09-16  3:51 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-16  3:48 [PATCH v4 00/11] Hyper-V: Support PAGE_SIZE larger than 4K Boqun Feng
2020-09-16  3:48 ` Boqun Feng
2020-09-16  3:48 ` [PATCH v4 01/11] Drivers: hv: vmbus: Always use HV_HYP_PAGE_SIZE for gpadl Boqun Feng
2020-09-16  3:48   ` Boqun Feng
2020-09-16  3:48 ` [PATCH v4 02/11] Drivers: hv: vmbus: Move __vmbus_open() Boqun Feng
2020-09-16  3:48   ` Boqun Feng
2020-09-16  3:48 ` [PATCH v4 03/11] Drivers: hv: vmbus: Introduce types of GPADL Boqun Feng
2020-09-16  3:48   ` Boqun Feng
2020-09-16  3:48 ` [PATCH v4 04/11] Drivers: hv: Use HV_HYP_PAGE in hv_synic_enable_regs() Boqun Feng
2020-09-16  3:48   ` Boqun Feng
2020-09-16  3:48 ` [PATCH v4 05/11] Drivers: hv: vmbus: Move virt_to_hvpfn() to hyperv header Boqun Feng
2020-09-16  3:48   ` Boqun Feng
2020-09-16  3:48 ` Boqun Feng [this message]
2020-09-16  3:48   ` [PATCH v4 06/11] hv: hyperv.h: Introduce some hvpfn helper functions Boqun Feng
2020-09-16  3:48 ` [PATCH v4 07/11] hv_netvsc: Use HV_HYP_PAGE_SIZE for Hyper-V communication Boqun Feng
2020-09-16  3:48   ` Boqun Feng
2020-09-16  3:48 ` [PATCH v4 08/11] Input: hyperv-keyboard: Use VMBUS_RING_SIZE() for ringbuffer sizes Boqun Feng
2020-09-16  3:48   ` Boqun Feng
2020-09-16  4:05   ` Dmitry Torokhov
2020-09-16  4:05     ` Dmitry Torokhov
2020-09-27  0:10   ` Michael Kelley
2020-09-27  0:10     ` Michael Kelley
2020-09-16  3:48 ` [PATCH v4 09/11] HID: hyperv: " Boqun Feng
2020-09-16  3:48   ` Boqun Feng
2020-09-27  0:11   ` Michael Kelley
2020-09-27  0:11     ` Michael Kelley
2020-09-16  3:48 ` [PATCH v4 10/11] Driver: hv: util: " Boqun Feng
2020-09-16  3:48   ` Boqun Feng
2020-09-27  0:12   ` Michael Kelley
2020-09-27  0:12     ` Michael Kelley
2020-09-16  3:48 ` [PATCH v4 11/11] scsi: storvsc: Support PAGE_SIZE larger than 4K Boqun Feng
2020-09-16  3:48   ` Boqun Feng
2020-09-28  8:59 ` [PATCH v4 00/11] Hyper-V: " Wei Liu
2020-09-28  8:59   ` Wei Liu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200916034817.30282-7-boqun.feng@gmail.com \
    --to=boqun.feng@gmail.com \
    --cc=ardb@kernel.org \
    --cc=arnd@arndb.de \
    --cc=benjamin.tissoires@redhat.com \
    --cc=catalin.marinas@arm.com \
    --cc=davem@davemloft.net \
    --cc=dmitry.torokhov@gmail.com \
    --cc=haiyangz@microsoft.com \
    --cc=jejb@linux.ibm.com \
    --cc=jikos@kernel.org \
    --cc=kuba@kernel.org \
    --cc=kys@microsoft.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-hyperv@vger.kernel.org \
    --cc=linux-input@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=martin.petersen@oracle.com \
    --cc=maz@kernel.org \
    --cc=mikelley@microsoft.com \
    --cc=netdev@vger.kernel.org \
    --cc=sthemmin@microsoft.com \
    --cc=wei.liu@kernel.org \
    --cc=will@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.