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 v3 06/11] hv: hyperv.h: Introduce some hvpfn helper functions
Date: Thu, 10 Sep 2020 22:34:50 +0800 [thread overview]
Message-ID: <20200910143455.109293-7-boqun.feng@gmail.com> (raw)
In-Reply-To: <20200910143455.109293-1-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 | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 6f4831212979..00c09d2ff9ad 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1687,4 +1687,9 @@ 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
next prev parent reply other threads:[~2020-09-10 14:39 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-10 14:34 [PATCH v3 00/11] Hyper-V: Support PAGE_SIZE larger than 4K Boqun Feng
2020-09-10 14:34 ` [PATCH v3 01/11] Drivers: hv: vmbus: Always use HV_HYP_PAGE_SIZE for gpadl Boqun Feng
2020-09-12 19:23 ` Michael Kelley
2020-09-10 14:34 ` [PATCH v3 02/11] Drivers: hv: vmbus: Move __vmbus_open() Boqun Feng
2020-09-12 19:24 ` Michael Kelley
2020-09-10 14:34 ` [PATCH v3 03/11] Drivers: hv: vmbus: Introduce types of GPADL Boqun Feng
2020-09-12 19:29 ` Michael Kelley
2020-09-10 14:34 ` [PATCH v3 04/11] Drivers: hv: Use HV_HYP_PAGE in hv_synic_enable_regs() Boqun Feng
2020-09-12 19:30 ` Michael Kelley
2020-09-10 14:34 ` [PATCH v3 05/11] Drivers: hv: vmbus: Move virt_to_hvpfn() to hyperv header Boqun Feng
2020-09-12 19:32 ` Michael Kelley
2020-09-10 14:34 ` Boqun Feng [this message]
2020-09-12 19:33 ` [PATCH v3 06/11] hv: hyperv.h: Introduce some hvpfn helper functions Michael Kelley
2020-09-10 14:34 ` [PATCH v3 07/11] hv_netvsc: Use HV_HYP_PAGE_SIZE for Hyper-V communication Boqun Feng
2020-09-12 19:36 ` Michael Kelley
2020-09-10 14:34 ` [PATCH v3 08/11] Input: hyperv-keyboard: Make ringbuffer at least take two pages Boqun Feng
2020-09-12 19:37 ` Michael Kelley
2020-09-13 16:59 ` Dmitry Torokhov
2020-09-14 8:46 ` Boqun Feng
2020-09-14 9:30 ` Wei Liu
2020-09-14 10:22 ` Boqun Feng
2020-09-10 14:34 ` [PATCH v3 09/11] HID: hyperv: " Boqun Feng
2020-09-12 19:38 ` Michael Kelley
2020-09-10 14:34 ` [PATCH v3 10/11] Driver: hv: util: " Boqun Feng
2020-09-12 19:40 ` Michael Kelley
2020-09-10 14:34 ` [PATCH v3 11/11] scsi: storvsc: Support PAGE_SIZE larger than 4K Boqun Feng
2020-09-12 19:55 ` Michael Kelley
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