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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-13 11:32:55 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-26 09:01:16 -0700 |
| commit | 8681db445ed407167cd0d78c48727773b132367b (patch) | |
| tree | 70cb5d80249c0718e9bc789b2a9ffa0b68101e50 /drivers/hv/connection.c | |
| parent | 7c55e1d0e64cf5acd8cf4a25927e2c7c322063aa (diff) | |
| download | linux-8681db445ed407167cd0d78c48727773b132367b.tar.gz linux-8681db445ed407167cd0d78c48727773b132367b.tar.bz2 linux-8681db445ed407167cd0d78c48727773b132367b.zip | |
hv: make "monitor_pages" a "real" pointer array
monitor_pages was a void pointer, containing an unknown number of arrays that
we just "knew" were a child and parent array of a specific size. Instead of
that implicit knowledge, let's make them a real pointer, allowing us to have
type safety, and a semblance of sane addressing schemes.
Tested-by: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/connection.c')
| -rw-r--r-- | drivers/hv/connection.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 8f4743ab5fb2..4faea979975e 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -76,10 +76,8 @@ static int vmbus_negotiate_version(struct vmbus_channel_msginfo *msginfo, msg->header.msgtype = CHANNELMSG_INITIATE_CONTACT; msg->vmbus_version_requested = version; msg->interrupt_page = virt_to_phys(vmbus_connection.int_page); - msg->monitor_page1 = virt_to_phys(vmbus_connection.monitor_pages); - msg->monitor_page2 = virt_to_phys( - (void *)((unsigned long)vmbus_connection.monitor_pages + - PAGE_SIZE)); + msg->monitor_page1 = virt_to_phys(vmbus_connection.monitor_pages[0]); + msg->monitor_page2 = virt_to_phys(vmbus_connection.monitor_pages[1]); /* * Add to list before we send the request since we may @@ -169,9 +167,10 @@ int vmbus_connect(void) * Setup the monitor notification facility. The 1st page for * parent->child and the 2nd page for child->parent */ - vmbus_connection.monitor_pages = - (void *)__get_free_pages((GFP_KERNEL|__GFP_ZERO), 1); - if (vmbus_connection.monitor_pages == NULL) { + vmbus_connection.monitor_pages[0] = (void *)__get_free_pages((GFP_KERNEL|__GFP_ZERO), 0); + vmbus_connection.monitor_pages[1] = (void *)__get_free_pages((GFP_KERNEL|__GFP_ZERO), 0); + if ((vmbus_connection.monitor_pages[0] == NULL) || + (vmbus_connection.monitor_pages[1] == NULL)) { ret = -ENOMEM; goto cleanup; } @@ -229,10 +228,10 @@ cleanup: vmbus_connection.int_page = NULL; } - if (vmbus_connection.monitor_pages) { - free_pages((unsigned long)vmbus_connection.monitor_pages, 1); - vmbus_connection.monitor_pages = NULL; - } + free_pages((unsigned long)vmbus_connection.monitor_pages[0], 1); + free_pages((unsigned long)vmbus_connection.monitor_pages[1], 1); + vmbus_connection.monitor_pages[0] = NULL; + vmbus_connection.monitor_pages[1] = NULL; kfree(msginfo); |