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    SubjectRE: [PATCH v2] PCI: hv: Fix the definition of vector in hv_compose_msi_msg()
    Date
    > From: Boqun Feng <boqun.feng@gmail.com>
    > Sent: Wednesday, March 29, 2023 7:56 PM
    > To: Dexuan Cui <decui@microsoft.com>
    > ...
    > 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@vger.kernel.org> # 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.


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