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| author | K. Y. Srinivasan <kys@microsoft.com> | 2016-02-27 02:13:21 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-02 03:57:20 +0300 |
| commit | d81274aae61c0a045cd0f34191c51fa64ba58bc4 (patch) | |
| tree | 974d675cc792cf04c456e0d09754e6bc6c4ebbe5 /drivers/hv/hv.c | |
| parent | e66853b09017a788dc384dadce9323396dae3293 (diff) | |
| download | linux-d81274aae61c0a045cd0f34191c51fa64ba58bc4.tar.xz | |
Drivers: hv: vmbus: Support handling messages on multiple CPUs
Starting with Windows 2012 R2, message inteerupts can be delivered
on any VCPU in the guest. Support this functionality.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/hv.c')
| -rw-r--r-- | drivers/hv/hv.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index ccb335f57c88..a1c086ba3b9a 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -204,6 +204,8 @@ int hv_init(void) sizeof(int) * NR_CPUS); memset(hv_context.event_dpc, 0, sizeof(void *) * NR_CPUS); + memset(hv_context.msg_dpc, 0, + sizeof(void *) * NR_CPUS); memset(hv_context.clk_evt, 0, sizeof(void *) * NR_CPUS); @@ -415,6 +417,13 @@ int hv_synic_alloc(void) } tasklet_init(hv_context.event_dpc[cpu], vmbus_on_event, cpu); + hv_context.msg_dpc[cpu] = kmalloc(size, GFP_ATOMIC); + if (hv_context.msg_dpc[cpu] == NULL) { + pr_err("Unable to allocate event dpc\n"); + goto err; + } + tasklet_init(hv_context.msg_dpc[cpu], vmbus_on_msg_dpc, cpu); + hv_context.clk_evt[cpu] = kzalloc(ced_size, GFP_ATOMIC); if (hv_context.clk_evt[cpu] == NULL) { pr_err("Unable to allocate clock event device\n"); @@ -456,6 +465,7 @@ err: static void hv_synic_free_cpu(int cpu) { kfree(hv_context.event_dpc[cpu]); + kfree(hv_context.msg_dpc[cpu]); kfree(hv_context.clk_evt[cpu]); if (hv_context.synic_event_page[cpu]) free_page((unsigned long)hv_context.synic_event_page[cpu]); |