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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 v2 01/11] Drivers: hv: vmbus: Always use HV_HYP_PAGE_SIZE for gpadl
Date: Wed, 2 Sep 2020 11:00:57 +0800 [thread overview]
Message-ID: <20200902030107.33380-2-boqun.feng@gmail.com> (raw)
In-Reply-To: <20200902030107.33380-1-boqun.feng@gmail.com>
Since the hypervisor always uses 4K as its page size, the size of PFNs
used for gpadl should be HV_HYP_PAGE_SIZE rather than PAGE_SIZE, so
adjust this accordingly as the preparation for supporting 16K/64K page
size guests. No functional changes on x86, since PAGE_SIZE is always 4k
(equals to HV_HYP_PAGE_SIZE).
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
---
drivers/hv/channel.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index 3ebda7707e46..4d0f8e5a88d6 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -22,9 +22,6 @@
#include "hyperv_vmbus.h"
-#define NUM_PAGES_SPANNED(addr, len) \
-((PAGE_ALIGN(addr + len) >> PAGE_SHIFT) - (addr >> PAGE_SHIFT))
-
static unsigned long virt_to_hvpfn(void *addr)
{
phys_addr_t paddr;
@@ -35,7 +32,7 @@ static unsigned long virt_to_hvpfn(void *addr)
else
paddr = __pa(addr);
- return paddr >> PAGE_SHIFT;
+ return paddr >> HV_HYP_PAGE_SHIFT;
}
/*
@@ -330,7 +327,7 @@ static int create_gpadl_header(void *kbuffer, u32 size,
int pfnsum, pfncount, pfnleft, pfncurr, pfnsize;
- pagecount = size >> PAGE_SHIFT;
+ pagecount = size >> HV_HYP_PAGE_SHIFT;
/* do we need a gpadl body msg */
pfnsize = MAX_SIZE_CHANNEL_MESSAGE -
@@ -360,7 +357,7 @@ static int create_gpadl_header(void *kbuffer, u32 size,
gpadl_header->range[0].byte_count = size;
for (i = 0; i < pfncount; i++)
gpadl_header->range[0].pfn_array[i] = virt_to_hvpfn(
- kbuffer + PAGE_SIZE * i);
+ kbuffer + HV_HYP_PAGE_SIZE * i);
*msginfo = msgheader;
pfnsum = pfncount;
@@ -412,7 +409,7 @@ static int create_gpadl_header(void *kbuffer, u32 size,
*/
for (i = 0; i < pfncurr; i++)
gpadl_body->pfn[i] = virt_to_hvpfn(
- kbuffer + PAGE_SIZE * (pfnsum + i));
+ kbuffer + HV_HYP_PAGE_SIZE * (pfnsum + i));
/* add to msg header */
list_add_tail(&msgbody->msglistentry,
@@ -441,7 +438,7 @@ static int create_gpadl_header(void *kbuffer, u32 size,
gpadl_header->range[0].byte_count = size;
for (i = 0; i < pagecount; i++)
gpadl_header->range[0].pfn_array[i] = virt_to_hvpfn(
- kbuffer + PAGE_SIZE * i);
+ kbuffer + HV_HYP_PAGE_SIZE * i);
*msginfo = msgheader;
}
--
2.28.0
next prev parent reply other threads:[~2020-09-02 3:01 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-02 3:00 [RFC v2 00/11] Hyper-V: Support PAGE_SIZE larger than 4K Boqun Feng
2020-09-02 3:00 ` Boqun Feng [this message]
2020-09-02 3:00 ` [RFC v2 02/11] Drivers: hv: vmbus: Move __vmbus_open() Boqun Feng
2020-09-05 0:04 ` Michael Kelley
2020-09-02 3:00 ` [RFC v2 03/11] Drivers: hv: vmbus: Introduce types of GPADL Boqun Feng
2020-09-05 0:19 ` Michael Kelley
2020-09-06 4:51 ` Boqun Feng
2020-09-02 3:01 ` [RFC v2 04/11] Drivers: hv: Use HV_HYP_PAGE in hv_synic_enable_regs() Boqun Feng
2020-09-02 3:01 ` [RFC v2 05/11] Drivers: hv: vmbus: Move virt_to_hvpfn() to hyperv header Boqun Feng
2020-09-02 3:01 ` [RFC v2 06/11] hv: hyperv.h: Introduce some hvpfn helper functions Boqun Feng
2020-09-02 3:01 ` [RFC v2 07/11] hv_netvsc: Use HV_HYP_PAGE_SIZE for Hyper-V communication Boqun Feng
2020-09-05 0:30 ` Michael Kelley
2020-09-07 0:09 ` Boqun Feng
2020-09-02 3:01 ` [RFC v2 08/11] Input: hyperv-keyboard: Make ringbuffer at least take two pages Boqun Feng
2020-09-02 3:01 ` [RFC v2 09/11] HID: hyperv: " Boqun Feng
2020-09-02 8:18 ` Jiri Kosina
2020-09-02 3:01 ` [RFC v2 10/11] Driver: hv: util: " Boqun Feng
2020-09-02 3:01 ` [RFC v2 11/11] scsi: storvsc: Support PAGE_SIZE larger than 4K Boqun Feng
2020-09-05 2:55 ` Michael Kelley
2020-09-05 14:15 ` Boqun Feng
2020-09-05 15:37 ` Michael Kelley
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