Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures #forregzbot

2022-11-04 Thread Thorsten Leemhuis
[Note: this mail is primarily send for documentation purposes and/or for regzbot, my Linux kernel regression tracking bot. That's why I removed most or all folks from the list of recipients, but left any that looked like a mailing lists. These mails usually contain '#forregzbot' in the subject, to

Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

2022-10-03 Thread Maxim Levitsky
On Sun, 2022-10-02 at 07:56 -0600, Keith Busch wrote: > On Sun, Oct 02, 2022 at 11:59:42AM +0300, Maxim Levitsky wrote: > > On Thu, 2022-09-29 at 19:35 +0200, Paolo Bonzini wrote: > > > On 9/29/22 18:39, Christoph Hellwig wrote: > > > > On Thu, Sep 29, 2022 at 10:37:22AM -0600, Keith Busch wrote: >

Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

2022-10-02 Thread Keith Busch
On Sun, Oct 02, 2022 at 11:59:42AM +0300, Maxim Levitsky wrote: > On Thu, 2022-09-29 at 19:35 +0200, Paolo Bonzini wrote: > > On 9/29/22 18:39, Christoph Hellwig wrote: > > > On Thu, Sep 29, 2022 at 10:37:22AM -0600, Keith Busch wrote: > > > > > I am aware, and I've submitted the fix to qemu here:

Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

2022-10-02 Thread Maxim Levitsky
On Thu, 2022-09-29 at 19:35 +0200, Paolo Bonzini wrote: > On 9/29/22 18:39, Christoph Hellwig wrote: > > On Thu, Sep 29, 2022 at 10:37:22AM -0600, Keith Busch wrote: > > > > I am aware, and I've submitted the fix to qemu here: > > > > > > > > https://lists.nongnu.org/archive/html/qemu-block/2022

Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

2022-09-30 Thread Thorsten Leemhuis
TWIMC: this mail is primarily send for documentation purposes and for regzbot, my Linux kernel regression tracking bot. These mails usually contain '#forregzbot' in the subject, to make them easy to spot and filter. [TLDR: I'm adding this regression report to the list of tracked regressions; all t

Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

2022-09-29 Thread Paolo Bonzini
On 9/29/22 18:39, Christoph Hellwig wrote: On Thu, Sep 29, 2022 at 10:37:22AM -0600, Keith Busch wrote: I am aware, and I've submitted the fix to qemu here: https://lists.nongnu.org/archive/html/qemu-block/2022-09/msg00398.html I don't think so. Memory alignment and length granularity are t

Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

2022-09-29 Thread Maxim Levitsky
On Thu, 2022-09-29 at 09:48 -0600, Keith Busch wrote: > I am aware, and I've submitted the fix to qemu here: > > https://lists.nongnu.org/archive/html/qemu-block/2022-09/msg00398.html > Thanks for quick response! Question is though, isn't this an kernel ABI breakage? (I myself don't care, I

Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

2022-09-29 Thread Keith Busch
I am aware, and I've submitted the fix to qemu here: https://lists.nongnu.org/archive/html/qemu-block/2022-09/msg00398.html

Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

2022-09-29 Thread Christoph Hellwig
On Thu, Sep 29, 2022 at 10:37:22AM -0600, Keith Busch wrote: > I don't think so. Memory alignment and length granularity are two completely > different concepts. If anything, the kernel's ABI had been that the length > requirement was also required for the memory alignment, not the other way > arou

Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

2022-09-29 Thread Keith Busch
On Thu, Sep 29, 2022 at 07:16:29PM +0300, Maxim Levitsky wrote: > On Thu, 2022-09-29 at 09:48 -0600, Keith Busch wrote: > > I am aware, and I've submitted the fix to qemu here: > > > > https://lists.nongnu.org/archive/html/qemu-block/2022-09/msg00398.html > > > > > Thanks for quick response!

Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

2022-09-29 Thread Maxim Levitsky
Hi! Recently I noticed that this commit broke the boot of some of the VMs that I run on my dev machine. It seems that I am not the first to notice this but in my case it is a bit different https://lore.kernel.org/all/e0038866ac54176beeac944c9116f7a9bdec7019.ca...@linux.ibm.com/ My VM is a