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
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>,
Boqun Feng <boqun.feng@gmail.com>
Subject: [RFC 06/11] hv: hyperv.h: Introduce some hvpfn helper functions
Date: Tue, 21 Jul 2020 09:41:30 +0800 [thread overview]
Message-ID: <20200721014135.84140-7-boqun.feng@gmail.com> (raw)
In-Reply-To: <20200721014135.84140-1-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>
---
include/linux/hyperv.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index eda8e5f9a49d..b34d94b1f659 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1703,4 +1703,8 @@ static inline unsigned long virt_to_hvpfn(void *addr)
return paddr >> HV_HYP_PAGE_SHIFT;
}
+#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) << PAGE_SHIFT) >> HV_HYP_PAGE_SHIFT)
+
#endif /* _HYPERV_H */
--
2.27.0
next prev parent reply other threads:[~2020-07-21 1:42 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-21 1:41 [RFC 00/11] Hyper-V: Support PAGE_SIZE larger than 4K Boqun Feng
2020-07-21 1:41 ` [RFC 01/11] Drivers: hv: vmbus: Always use HV_HYP_PAGE_SIZE for gpadl Boqun Feng
2020-07-21 15:22 ` Wei Liu
2020-07-22 23:20 ` Boqun Feng
2020-07-21 1:41 ` [RFC 02/11] Drivers: hv: vmbus: Move __vmbus_open() Boqun Feng
2020-07-21 15:23 ` Wei Liu
2020-07-21 1:41 ` [RFC 03/11] Drivers: hv: vmbus: Introduce types of GPADL Boqun Feng
2020-07-22 23:25 ` Michael Kelley
2020-07-22 23:43 ` Boqun Feng
2020-07-22 23:56 ` Michael Kelley
2020-07-21 1:41 ` [RFC 04/11] Drivers: hv: Use HV_HYP_PAGE in hv_synic_enable_regs() Boqun Feng
2020-07-21 1:41 ` [RFC 05/11] Drivers: hv: vmbus: Move virt_to_hvpfn() to hyperv header Boqun Feng
2020-07-21 1:41 ` Boqun Feng [this message]
2020-07-21 1:41 ` [RFC 07/11] hv_netvsc: Use HV_HYP_PAGE_SIZE for Hyper-V communication Boqun Feng
2020-07-21 1:41 ` [RFC 08/11] Input: hyperv-keyboard: Make ringbuffer at least take two pages Boqun Feng
2020-07-21 1:41 ` [RFC 09/11] HID: hyperv: " Boqun Feng
2020-07-22 23:36 ` Michael Kelley
2020-07-23 1:28 ` boqun.feng
2020-07-21 1:41 ` [RFC 10/11] Driver: hv: util: " Boqun Feng
2020-07-21 1:41 ` [RFC 11/11] scsi: storvsc: Support PAGE_SIZE larger than 4K Boqun Feng
2020-07-23 0:13 ` Michael Kelley
2020-07-23 1:51 ` boqun.feng
2020-07-23 2:26 ` Michael Kelley
2020-07-23 3:12 ` Boqun Feng
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=20200721014135.84140-7-boqun.feng@gmail.com \
--to=boqun.feng@gmail.com \
--cc=benjamin.tissoires@redhat.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-hyperv@vger.kernel.org \
--cc=linux-input@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=martin.petersen@oracle.com \
--cc=mikelley@microsoft.com \
--cc=netdev@vger.kernel.org \
--cc=sthemmin@microsoft.com \
--cc=wei.liu@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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).