[PULL for-6.2 0/1] target-arm queue

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git fetch https://github.com/patchew-project/qemu tags/patchew/20211207172533.1410205-1-peter.maydell@linaro.org
Maintainers: Peter Maydell <peter.maydell@linaro.org>
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hw/intc/arm_gicv3_cpuif.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
[PULL for-6.2 0/1] target-arm queue
Posted by Peter Maydell 2 years, 4 months ago
Last minute pullreq with one patch, fixing the GICv3 ICH_MISR_EL2.LRENP
calculation. I went back-and-forth on whether to put this in, but:
 * it's an effective regression from 6.1 (the bug itself has been
   present since before then, but it was previously masked by the
   other bug which we fixed in 9cee1efe92)
 * I just realized it could cause a screaming maintenance interrupt
   even for hypervisors like KVM that don't set LRENPIE

On the other hand this is very late and we haven't seen it be a
problem with any guest except Qualcomm's hypervisor. So if you want
to decide it's better not going in that's OK too.

Tested on the gitlab CI and with a local test of nested KVM.

-- PMM

The following changes since commit 7635eff97104242d618400e4b6746d0a5c97af82:

  Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging (2021-12-06 11:18:06 -0800)

are available in the Git repository at:

  https://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20211207

for you to fetch changes up to 2958e5150dfa297dd5a51fe57a29156b8744f07f:

  gicv3: fix ICH_MISR's LRENP computation (2021-12-07 15:30:08 +0000)

----------------------------------------------------------------
target-arm queue:
 * Fix calculation of ICH_MISR_EL2.LRENP to avoid incorrect generation
   of maintenance interrupts

----------------------------------------------------------------
Damien Hedde (1):
      gicv3: fix ICH_MISR's LRENP computation

 hw/intc/arm_gicv3_cpuif.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Re: [PULL for-6.2 0/1] target-arm queue
Posted by Richard Henderson 2 years, 4 months ago
On 12/7/21 9:25 AM, Peter Maydell wrote:
> Last minute pullreq with one patch, fixing the GICv3 ICH_MISR_EL2.LRENP
> calculation. I went back-and-forth on whether to put this in, but:
>   * it's an effective regression from 6.1 (the bug itself has been
>     present since before then, but it was previously masked by the
>     other bug which we fixed in 9cee1efe92)
>   * I just realized it could cause a screaming maintenance interrupt
>     even for hypervisors like KVM that don't set LRENPIE
> 
> On the other hand this is very late and we haven't seen it be a
> problem with any guest except Qualcomm's hypervisor. So if you want
> to decide it's better not going in that's OK too.
> 
> Tested on the gitlab CI and with a local test of nested KVM.
> 
> -- PMM
> 
> The following changes since commit 7635eff97104242d618400e4b6746d0a5c97af82:
> 
>    Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging (2021-12-06 11:18:06 -0800)
> 
> are available in the Git repository at:
> 
>    https://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20211207
> 
> for you to fetch changes up to 2958e5150dfa297dd5a51fe57a29156b8744f07f:
> 
>    gicv3: fix ICH_MISR's LRENP computation (2021-12-07 15:30:08 +0000)
> 
> ----------------------------------------------------------------
> target-arm queue:
>   * Fix calculation of ICH_MISR_EL2.LRENP to avoid incorrect generation
>     of maintenance interrupts
> 
> ----------------------------------------------------------------
> Damien Hedde (1):
>        gicv3: fix ICH_MISR's LRENP computation
> 
>   hw/intc/arm_gicv3_cpuif.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)

Applied, thanks.

r~