Messages in this thread | | | From | "Stephen Hemminger" <> | Subject | RE: [PATCH 1/1] Drivers: hv: vmbus: Fix ring buffer signaling | Date | Wed, 28 Mar 2018 16:25:11 -0700 |
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Thanks, I hadn't updated to rc7 yet
-----Original Message----- From: Joshua R. Poulson <jrp@pun.org> Sent: Wednesday, March 28, 2018 12:18 PM To: Stephen Hemminger <stephen@networkplumber.org> Cc: K. Y. Srinivasan <kys@exchange.microsoft.com>; KY Srinivasan <kys@microsoft.com>; gregkh@linuxfoundation.org; linux-kernel@vger.kernel.org; devel@linuxdriverproject.org; olaf@aepfle.de; Andy Whitcroft <apw@canonical.com>; Vitaly Kuznetsov <vkuznets@redhat.com>; jasowang@redhat.com; Leann Ogasawara <leann.ogasawara@canonical.com>; Marcelo Henrique Cerri <marcelo.cerri@canonical.com>; Stephen Hemminger <sthemmin@microsoft.com>; Michael Kelley <mhkelley@outlook.com>; Stable <stable@vger.kernel.org> Subject: Re: [PATCH 1/1] Drivers: hv: vmbus: Fix ring buffer signaling
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v4.16-rc7&id=655296c8bbeffcf020558c4455305d597a73bde1
On Wed, Mar 28, 2018 at 12:01 PM, Stephen Hemminger <stephen@networkplumber.org> wrote: > On Sun, 4 Mar 2018 22:24:08 -0700 > kys@exchange.microsoft.com wrote: > >> From: Michael Kelley <mhkelley@outlook.com> >> >> Fix bugs in signaling the Hyper-V host when freeing space in the >> host->guest ring buffer: >> >> 1. The interrupt_mask must not be used to determine whether to signal >> on the host->guest ring buffer >> 2. The ring buffer write_index must be read (via hv_get_bytes_to_write) >> *after* pending_send_sz is read in order to avoid a race condition >> 3. Comparisons with pending_send_sz must treat the "equals" case as >> not-enough-space >> 4. Don't signal if the pending_send_sz feature is not present. Older >> versions of Hyper-V that don't implement this feature will poll. >> >> Fixes: 03bad714a161 ("vmbus: more host signalling avoidance") >> >> Cc: Stable <stable@vger.kernel.org> # 4.14 and above >> Signed-off-by: Michael Kelley <mhkelley@outlook.com> >> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> > > What ever happened to this patch? It doesn't seem to be in char-misc, upstream, > or stable kernel tree yet. > >
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