From: "Cédric Le Goater" <clg@kaod.org>
To: Sasha Levin <sashal@kernel.org>
Cc: kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH AUTOSEL 5.14 38/99] KVM: PPC: Book3S HV: XICS: Fix mapping of passthrough interrupts
Date: Mon, 13 Sep 2021 16:19:33 +0000 [thread overview]
Message-ID: <90cd638d-62d2-8c98-cce0-4c71feee8671@kaod.org> (raw)
In-Reply-To: <YTy+xUtEEpln2Sq4@sashalap>
On 9/11/21 4:35 PM, Sasha Levin wrote:
> On Fri, Sep 10, 2021 at 07:48:18AM +0200, Cédric Le Goater wrote:
>> On 9/10/21 2:14 AM, Sasha Levin wrote:
>>> From: Cédric Le Goater <clg@kaod.org>
>>>
>>> [ Upstream commit 1753081f2d445f9157550692fcc4221cd3ff0958 ]
>>>
>>> PCI MSIs now live in an MSI domain but the underlying calls, which
>>> will EOI the interrupt in real mode, need an HW IRQ number mapped in
>>> the XICS IRQ domain. Grab it there.
>>>
>>> Signed-off-by: Cédric Le Goater <clg@kaod.org>
>>> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
>>> Link: https://lore.kernel.org/r/20210701132750.1475580-31-clg@kaod.org
>>> Signed-off-by: Sasha Levin <sashal@kernel.org>
>>
>>
>> Why are we backporting this patch in stable trees ?
>>
>> It should be fine but to compile, we need a partial backport of commit
>> 51be9e51a800 ("KVM: PPC: Book3S HV: XIVE: Fix mapping of passthrough
>> interrupts") which exports irq_get_default_host().
>
> Or, I can drop it if it makes no sense?
Yes I would.
It makes sense only with the full patchset, the one reworking PCI MSI
support in the PPC pSeries and PowerNV platforms.
Thanks,
C.
next prev parent reply other threads:[~2021-09-13 16:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210910001558.173296-1-sashal@kernel.org>
2021-09-10 0:14 ` [PATCH AUTOSEL 5.14 38/99] KVM: PPC: Book3S HV: XICS: Fix mapping of passthrough interrupts Sasha Levin
2021-09-10 5:48 ` Cédric Le Goater
2021-09-11 14:35 ` Sasha Levin
2021-09-13 16:19 ` Cédric Le Goater [this message]
2021-09-10 0:15 ` [PATCH AUTOSEL 5.14 71/99] KVM: PPC: Book3S HV: Initialise vcpu MSR with MSR_ME Sasha Levin
2021-09-10 0:15 ` [PATCH AUTOSEL 5.14 72/99] KVM: PPC: Book3S HV P9: Fixes for TM softpatch interrupt NIP Sasha Levin
2021-09-10 0:15 ` [PATCH AUTOSEL 5.14 73/99] KVM: PPC: Book3S HV Nested: Fix TM softpatch HFAC interrupt emulation Sasha Levin
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