From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:57495 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753907AbcHRJio (ORCPT ); Thu, 18 Aug 2016 05:38:44 -0400 Subject: Patch "random: add interrupt callback to VMBus IRQ handler" has been added to the 4.7-stable tree To: smueller@chronox.de, gregkh@linuxfoundation.org, stephan.mueller@atsec.com, tytso@mit.edu Cc: , From: Date: Thu, 18 Aug 2016 11:37:47 +0200 Message-ID: <14715130671658@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled random: add interrupt callback to VMBus IRQ handler to the 4.7-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: random-add-interrupt-callback-to-vmbus-irq-handler.patch and it can be found in the queue-4.7 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 4b44f2d18a330565227a7348844493c59366171e Mon Sep 17 00:00:00 2001 From: Stephan Mueller Date: Mon, 2 May 2016 02:14:34 -0400 Subject: random: add interrupt callback to VMBus IRQ handler From: Stephan Mueller commit 4b44f2d18a330565227a7348844493c59366171e upstream. 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. Signed-off-by: Stephan Mueller Signed-off-by: Stephan Mueller Signed-off-by: Theodore Ts'o Signed-off-by: Greg Kroah-Hartman --- drivers/char/random.c | 1 + drivers/hv/vmbus_drv.c | 3 +++ 2 files changed, 4 insertions(+) --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -949,6 +949,7 @@ void add_interrupt_randomness(int irq, i /* award one bit for the contents of the fast pool */ credit_entropy_bits(r, credit + 1); } +EXPORT_SYMBOL_GPL(add_interrupt_randomness); #ifdef CONFIG_BLOCK void add_disk_randomness(struct gendisk *disk) --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -42,6 +42,7 @@ #include #include #include +#include #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); } Patches currently in stable-queue which might be from smueller@chronox.de are queue-4.7/random-add-interrupt-callback-to-vmbus-irq-handler.patch