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| author | Stephan Mueller <smueller@chronox.de> | 2016-05-02 02:14:34 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2016-06-13 11:54:33 -0400 |
| commit | 4b44f2d18a330565227a7348844493c59366171e (patch) | |
| tree | 5a995230ac3e2e56bc3042385a2f585c31e9389d /drivers/hv/vmbus_drv.c | |
| parent | 9b4d008787f864f17d008c9c15bbe8a0f7e2fc24 (diff) | |
| download | linux-stable-4b44f2d18a330565227a7348844493c59366171e.tar.gz linux-stable-4b44f2d18a330565227a7348844493c59366171e.tar.bz2 linux-stable-4b44f2d18a330565227a7348844493c59366171e.zip | |
random: add interrupt callback to VMBus IRQ handler
The Hyper-V Linux Integration Services use the VMBus implementation for
communication with the Hypervisor. VMBus registers its own interrupt
handler that completely bypasses the common Linux interrupt handling.
This implies that the interrupt entropy collector is not triggered.
This patch adds the interrupt entropy collection callback into the VMBus
interrupt handler function.
Cc: stable@kernel.org
Signed-off-by: Stephan Mueller <stephan.mueller@atsec.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'drivers/hv/vmbus_drv.c')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 952f20fdc7e3..e82f7e1c217c 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -42,6 +42,7 @@ #include <linux/screen_info.h> #include <linux/kdebug.h> #include <linux/efi.h> +#include <linux/random.h> #include "hyperv_vmbus.h" static struct acpi_device *hv_acpi_dev; @@ -806,6 +807,8 @@ static void vmbus_isr(void) else tasklet_schedule(hv_context.msg_dpc[cpu]); } + + add_interrupt_randomness(HYPERVISOR_CALLBACK_VECTOR, 0); } |