suggest commit 5b61343b50 to stable

suggest commit 5b61343b50 to stable

[Miles Chen]

Hi reviewers,

I suggest to apply the following patch to stable kernel 5.4.y and 5.10.y:

commit: 5b61343b50590fb04a3f6be2cdc4868091757262
Subject: iommu/iova: Improve 32-bit free space estimate
kernel version to apply to: 5.4.y and 5.10.y

Reason:
The patch fix a corner case of iova allocation and the allocation failure
can be found under stress tests.

Test:
The patch can be applied to Linux 5.10.109 and Linux 5.4.188 without conflicts.
Both Linux 5.10.109 and Linux 5.4.188 can be built successfully with
this patch. (ARCH=arm64 defconfig)

Thanks,
Miles

Re: suggest commit 5b61343b50 to stable

[Greg KH]

On Wed, Mar 30, 2022 at 04:21:57PM +0800, Miles Chen wrote:
> Hi reviewers,
> 
> I suggest to apply the following patch to stable kernel 5.4.y and 5.10.y:
> 
> commit: 5b61343b50590fb04a3f6be2cdc4868091757262
> Subject: iommu/iova: Improve 32-bit free space estimate
> kernel version to apply to: 5.4.y and 5.10.y

What about 5.15 and 5.16 and 5.17?  Why skip them?

thanks,

greg k-h

Re: suggest commit 5b61343b50 to stable

[Miles Chen]

On Wed, 2022-03-30 at 10:33 +0200, Greg KH wrote:
> On Wed, Mar 30, 2022 at 04:21:57PM +0800, Miles Chen wrote:
> > Hi reviewers,
> > 
> > I suggest to apply the following patch to stable kernel 5.4.y and
> > 5.10.y:
> > 
> > commit: 5b61343b50590fb04a3f6be2cdc4868091757262
> > Subject: iommu/iova: Improve 32-bit free space estimate
> > kernel version to apply to: 5.4.y and 5.10.y
> 
> What about 5.15 and 5.16 and 5.17?  Why skip them?

Sorry for missing that, please add them to 5.15, 5.16 and 5.17. (I saw
you already added them, thanks).

I tested the patch(no merge conflict) and buld with Linux 5.15.32,
Linux 5.17.1, and Linux 5.16.18

Thanks,
Miles
> 
> thanks,
> 
> greg k-h

Re: suggest commit 5b61343b50 to stable

[Greg KH]

On Wed, Mar 30, 2022 at 05:22:25PM +0800, Miles Chen wrote:
> On Wed, 2022-03-30 at 10:33 +0200, Greg KH wrote:
> > On Wed, Mar 30, 2022 at 04:21:57PM +0800, Miles Chen wrote:
> > > Hi reviewers,
> > > 
> > > I suggest to apply the following patch to stable kernel 5.4.y and
> > > 5.10.y:
> > > 
> > > commit: 5b61343b50590fb04a3f6be2cdc4868091757262
> > > Subject: iommu/iova: Improve 32-bit free space estimate
> > > kernel version to apply to: 5.4.y and 5.10.y
> > 
> > What about 5.15 and 5.16 and 5.17?  Why skip them?
> 
> Sorry for missing that, please add them to 5.15, 5.16 and 5.17. (I saw
> you already added them, thanks).
> 
> I tested the patch(no merge conflict) and buld with Linux 5.15.32,
> Linux 5.17.1, and Linux 5.16.18

All now queued up, thanks!

greg k-h