RE: [PATCH v2] PCI: hv: Fix the definition of vector in hv_compose_msi_msg()

[Dexuan Cui]

> From: Boqun Feng <boqun.feng@xxxxxxxxx>
> Sent: Wednesday, March 29, 2023 7:56 PM
> To: Dexuan Cui <decui@xxxxxxxxxxxxx>
>  ...
> On Wed, Mar 29, 2023 at 06:56:12PM -0700, Boqun Feng wrote:
> > [Cc stable]
> >
> > On Thu, Oct 27, 2022 at 01:52:56PM -0700, Dexuan Cui wrote:
> > > The local variable 'vector' must be u32 rather than u8: see the
> > > struct hv_msi_desc3.
> > >
> > > 'vector_count' should be u16 rather than u8: see struct hv_msi_desc,
> > > hv_msi_desc2 and hv_msi_desc3.
> > >
> >
> > Dexuan, I think this patch should only be in 5.15, because...
> >
> 
> Sorry, I meant:
> 
> "this patch should also be backported in 5.15"
> 
> Regards,
> Boqun
> 
> > > Fixes: a2bad844a67b ("PCI: hv: Fix interrupt mapping for multi-MSI")
> >
> > ^^^ this commit is already in 5.15.y (commit id 92dcb50f7f09).
> >
> > Upstream id e70af8d040d2b7904dca93d942ba23fb722e21b1
> > Cc: <stable@xxxxxxxxxxxxxxx> # 5.15.x

The faulty commit a2bad844a67b ("PCI: hv: Fix interrupt mapping for multi-MSI")
is in all the stable branches, even including 4.14.y, so yes, the commit
e70af8d040d2 ("PCI: hv: Fix the definition of vector in hv_compose_msi_msg()")
should be backported to all the stable branches as well, including
v5.15.y, v5.10.y, v5.4.y, v4.19.y, v4.14.y.

e70af8d040d2 has a Fixes tag. Not sure why it's not automatically backported.