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Message-ID: <0d9e80ecabcc950dc279fdd2e39bea4060123ba4.1562916939.git.m.maya.nakamura@gmail.com>
Date: Fri, 12 Jul 2019 08:25:18 +0000
From: Maya Nakamura <m.maya.nakamura@...il.com>
To: mikelley@...rosoft.com, kys@...rosoft.com, haiyangz@...rosoft.com,
sthemmin@...rosoft.com, sashal@...nel.org
Cc: x86@...nel.org, linux-hyperv@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v4 3/5] hv: vmbus: Replace page definition with Hyper-V
specific one
Replace PAGE_SIZE with HV_HYP_PAGE_SIZE because the guest page size may
not be 4096 on all architectures and Hyper-V always runs with a page
size of 4096.
Signed-off-by: Maya Nakamura <m.maya.nakamura@...il.com>
Reviewed-by: Michael Kelley <mikelley@...rosoft.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@...hat.com>
---
drivers/hv/hyperv_vmbus.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 362e70e9d145..019469c3cbca 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -192,11 +192,11 @@ int hv_ringbuffer_read(struct vmbus_channel *channel,
u64 *requestid, bool raw);
/*
- * Maximum channels is determined by the size of the interrupt page
- * which is PAGE_SIZE. 1/2 of PAGE_SIZE is for send endpoint interrupt
- * and the other is receive endpoint interrupt
+ * Maximum channels, 16348, is determined by the size of the interrupt page,
+ * which is HV_HYP_PAGE_SIZE. 1/2 of HV_HYP_PAGE_SIZE is to send endpoint
+ * interrupt, and the other is to receive endpoint interrupt.
*/
-#define MAX_NUM_CHANNELS ((PAGE_SIZE >> 1) << 3) /* 16348 channels */
+#define MAX_NUM_CHANNELS ((HV_HYP_PAGE_SIZE >> 1) << 3)
/* The value here must be in multiple of 32 */
/* TODO: Need to make this configurable */
--
2.17.1
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