From: Greg KH <gregkh@linuxfoundation.org>
To: Marc Zyngier <maz@kernel.org>
Cc: kernel-team@android.com, kvmarm@lists.cs.columbia.edu,
stable@vger.kernel.org
Subject: Re: [PATCH][stable-4.{4,9,14,19}] KVM: arm64: Fix exclusive limit for IPA size
Date: Mon, 15 Mar 2021 12:30:31 +0100 [thread overview]
Message-ID: <YE9FVw1PE9kClrdi@kroah.com> (raw)
In-Reply-To: <20210315110833.4135927-1-maz@kernel.org>
On Mon, Mar 15, 2021 at 11:08:33AM +0000, Marc Zyngier wrote:
> Commit 262b003d059c6671601a19057e9fe1a5e7f23722 upstream.
>
> When registering a memslot, we check the size and location of that
> memslot against the IPA size to ensure that we can provide guest
> access to the whole of the memory.
>
> Unfortunately, this check rejects memslot that end-up at the exact
> limit of the addressing capability for a given IPA size. For example,
> it refuses the creation of a 2GB memslot at 0x8000000 with a 32bit
> IPA space.
>
> Fix it by relaxing the check to accept a memslot reaching the
> limit of the IPA space.
>
> Fixes: c3058d5da222 ("arm/arm64: KVM: Ensure memslots are within KVM_PHYS_SIZE")
> Reviewed-by: Eric Auger <eric.auger@redhat.com>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> Cc: stable@vger.kernel.org # 4.4, 4.9, 4.14, 4.19
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> Link: https://lore.kernel.org/r/20210311100016.3830038-3-maz@kernel.org
> ---
> virt/kvm/arm/mmu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
This file does not exist in 4.4.y or 4.9.y, so I can't apply it there :(
Queued up everywhere else, and also the other backports you sent,
thanks.
gre gk-h
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WARNING: multiple messages have this Message-ID (diff)
From: Greg KH <gregkh@linuxfoundation.org>
To: Marc Zyngier <maz@kernel.org>
Cc: kvmarm@lists.cs.columbia.edu, kernel-team@android.com,
Eric Auger <eric.auger@redhat.com>,
stable@vger.kernel.org, Andrew Jones <drjones@redhat.com>
Subject: Re: [PATCH][stable-4.{4,9,14,19}] KVM: arm64: Fix exclusive limit for IPA size
Date: Mon, 15 Mar 2021 12:30:31 +0100 [thread overview]
Message-ID: <YE9FVw1PE9kClrdi@kroah.com> (raw)
In-Reply-To: <20210315110833.4135927-1-maz@kernel.org>
On Mon, Mar 15, 2021 at 11:08:33AM +0000, Marc Zyngier wrote:
> Commit 262b003d059c6671601a19057e9fe1a5e7f23722 upstream.
>
> When registering a memslot, we check the size and location of that
> memslot against the IPA size to ensure that we can provide guest
> access to the whole of the memory.
>
> Unfortunately, this check rejects memslot that end-up at the exact
> limit of the addressing capability for a given IPA size. For example,
> it refuses the creation of a 2GB memslot at 0x8000000 with a 32bit
> IPA space.
>
> Fix it by relaxing the check to accept a memslot reaching the
> limit of the IPA space.
>
> Fixes: c3058d5da222 ("arm/arm64: KVM: Ensure memslots are within KVM_PHYS_SIZE")
> Reviewed-by: Eric Auger <eric.auger@redhat.com>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> Cc: stable@vger.kernel.org # 4.4, 4.9, 4.14, 4.19
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> Link: https://lore.kernel.org/r/20210311100016.3830038-3-maz@kernel.org
> ---
> virt/kvm/arm/mmu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
This file does not exist in 4.4.y or 4.9.y, so I can't apply it there :(
Queued up everywhere else, and also the other backports you sent,
thanks.
gre gk-h
next prev parent reply other threads:[~2021-03-15 11:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-15 11:08 [PATCH][stable-4.{4, 9, 14, 19}] KVM: arm64: Fix exclusive limit for IPA size Marc Zyngier
2021-03-15 11:08 ` [PATCH][stable-4.{4,9,14,19}] " Marc Zyngier
2021-03-15 11:30 ` Greg KH [this message]
2021-03-15 11:30 ` Greg KH
2021-03-15 11:44 ` [PATCH][stable-4.{4, 9, 14, 19}] " Marc Zyngier
2021-03-15 11:44 ` [PATCH][stable-4.{4,9,14,19}] " Marc Zyngier
2021-03-15 11:30 ` Patch "KVM: arm64: Fix exclusive limit for IPA size" has been added to the 4.14-stable tree gregkh
2021-03-15 11:31 ` Patch "KVM: arm64: Fix exclusive limit for IPA size" has been added to the 4.19-stable tree gregkh
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