Messages in this thread | | | Date | Wed, 28 Mar 2018 12:01:42 -0700 | From | Stephen Hemminger <> | Subject | Re: [PATCH 1/1] Drivers: hv: vmbus: Fix ring buffer signaling |
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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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