From: longli@linuxonhyperv.com
To: Stephen Hemminger <stephen@networkplumber.org>,
Wei Hu <weh@microsoft.com>
Cc: dev@dpdk.org, Long Li <longli@microsoft.com>, stable@dpdk.org
Subject: [PATCH 2/4] bus/vmbus: Define Hyper-V page size
Date: Fri, 18 Apr 2025 12:32:48 -0700 [thread overview]
Message-ID: <1745004770-9795-3-git-send-email-longli@linuxonhyperv.com> (raw)
In-Reply-To: <1745004770-9795-1-git-send-email-longli@linuxonhyperv.com>
From: Long Li <longli@microsoft.com>
Hyper-V uses 4k page size, regardless of the system page size used. Define
Hyper-V page size for use in drivers.
Fixes: 831dba47bd ("bus/vmbus: add Hyper-V virtual bus support")
Cc: stable@dpdk.org
Signed-off-by: Long Li <longli@microsoft.com>
---
drivers/bus/vmbus/bus_vmbus_driver.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/bus/vmbus/bus_vmbus_driver.h b/drivers/bus/vmbus/bus_vmbus_driver.h
index bc394208de..0a56275437 100644
--- a/drivers/bus/vmbus/bus_vmbus_driver.h
+++ b/drivers/bus/vmbus/bus_vmbus_driver.h
@@ -14,6 +14,10 @@
extern "C" {
#endif
+#define HYPERV_PAGE_SHIFT 12
+#define HYPERV_PAGE_SIZE (1 << HYPERV_PAGE_SHIFT)
+#define HYPERV_PAGE_MASK (HYPERV_PAGE_SIZE - 1)
+
struct vmbus_channel;
struct vmbus_mon_page;
--
2.34.1
next prev parent reply other threads:[~2025-04-18 19:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1745004770-9795-1-git-send-email-longli@linuxonhyperv.com>
2025-04-18 19:32 ` [PATCH 1/4] bus/vmbus: Align ring buffer data region to system page boundary longli
2025-04-18 19:32 ` longli [this message]
2025-04-18 19:32 ` [PATCH 3/4] bus/vmbus: Use Hyper-V page size for mapping to UIO pages longli
2025-04-18 19:32 ` [PATCH 4/4] net/netvsc: Use Hyper-V page size for the driver longli
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