RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-09-06 Thread Salil Mehta via
Hi Alex, > From: qemu-arm-bounces+salil.mehta=huawei@nongnu.org arm-bounces+salil.mehta=huawei@nongnu.org> On Behalf Of Salil > Mehta via > Sent: Wednesday, September 4, 2024 5:00 PM > To: Alex Bennée > > Hi Alex, > > > From: Alex Bennée > > Sent: Wednesday, September 4, 2

RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-09-04 Thread Salil Mehta via
Hi Alex, > From: Alex Bennée > Sent: Wednesday, September 4, 2024 4:46 PM > To: Salil Mehta > > Salil Mehta writes: > > > Hi Alex, > > > >> -Original Message- > >> From: Alex Bennée > >> Sent: Thursday, August 29, 2024 11:00 AM > >> To: Gustavo Romero > >> > >> Gu

Re: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-09-04 Thread Alex Bennée
Salil Mehta writes: > Hi Alex, > >> -Original Message- >> From: Alex Bennée >> Sent: Thursday, August 29, 2024 11:00 AM >> To: Gustavo Romero >> >> Gustavo Romero writes: >> >> > Hi Salil, >> > >> > On 6/13/24 8:36 PM, Salil Mehta via wrote: >> >> >> (VI) Commands Used >

RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-09-04 Thread Salil Mehta via
Hi Alex, > -Original Message- > From: Alex Bennée > Sent: Thursday, August 29, 2024 11:00 AM > To: Gustavo Romero > > Gustavo Romero writes: > > > Hi Salil, > > > > On 6/13/24 8:36 PM, Salil Mehta via wrote: > > >> (VI) Commands Used > >> == > >> A. Qemu

RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-09-04 Thread Salil Mehta via
Hi Gustavo, > From: Gustavo Romero > Sent: Wednesday, August 28, 2024 9:36 PM > To: Salil Mehta ; qemu-devel@nongnu.org; > qemu-...@nongnu.org; m...@redhat.com > > Hi Salil, > > On 6/13/24 8:36 PM, Salil Mehta via wrote: > > PROLOGUE > > > > > > To assist in review and set

Re: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-29 Thread Alex Bennée
Gustavo Romero writes: > Hi Salil, > > On 6/13/24 8:36 PM, Salil Mehta via wrote: >> (VI) Commands Used >> == >> A. Qemu launch commands to init the machine: >> $ qemu-system-aarch64 --enable-kvm -machine virt,gic-version=3 >> \ >>-cpu host -smp cpus=4,maxcpus=6 \ >>

Re: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-28 Thread Gustavo Romero
Hi Salil, On 6/13/24 8:36 PM, Salil Mehta via wrote: PROLOGUE To assist in review and set the right expectations from this RFC, please first read the sections *APPENDED AT THE END* of this cover letter: 1. Important *DISCLAIMER* [Section (X)] 2. Work presented at KVMForum Conference (

RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-08 Thread Salil Mehta via
Hi Gavin, > From: Gavin Shan > Sent: Thursday, August 8, 2024 5:15 AM > To: Salil Mehta ; qemu-devel@nongnu.org; > qemu-...@nongnu.org; m...@redhat.com > > Hi Salil, > > On 8/8/24 10:29 AM, Gavin Shan wrote: > > On 8/8/24 9:48 AM, Salil Mehta wrote: > > > > However, I'm unable to hot

RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-08 Thread Salil Mehta via
Hi Gavin, > From: Gavin Shan > Sent: Thursday, August 8, 2024 1:29 AM > To: Salil Mehta ; qemu-devel@nongnu.org; > qemu-...@nongnu.org; m...@redhat.com > > Hi Salil, > > On 8/8/24 9:48 AM, Salil Mehta wrote: > >> On 8/7/24 11:27 PM, Salil Mehta wrote: > >> > > >> > Let me figur

Re: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-07 Thread Gavin Shan
Hi Salil, On 8/8/24 2:07 AM, Salil Mehta wrote: I tested ARM arch specific patches with the latest Qemu which contains below mentioned fix and I cannot reproduce the crash. I used kernel linux-6.11-rc2 and it booted successfully. Though I did see a kernel crash on attempting to hotplug first v

Re: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-07 Thread Gavin Shan
Hi Salil, On 8/8/24 10:29 AM, Gavin Shan wrote: On 8/8/24 9:48 AM, Salil Mehta wrote: However, I'm unable to hot-add a vCPU and haven't get a chance to look at it closely. (qemu) device_add host-arm-cpu,id=cpu,socket-id=1 (qemu) [  258.901027] Unable to handle kernel write to read-only memory

Re: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-07 Thread Gavin Shan
Hi Salil, On 8/8/24 9:48 AM, Salil Mehta wrote: On 8/7/24 11:27 PM, Salil Mehta wrote: > > Let me figure out this. Have you also included the below patch along > with the architecture agnostic patch-set accepted in this Qemu cycle? > > https://lore.kernel.org/all/20240801142322.39488

RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-07 Thread Salil Mehta via
Hi Gavin, Thanks for further information. > From: Gavin Shan > Sent: Thursday, August 8, 2024 12:41 AM > To: Salil Mehta ; qemu-devel@nongnu.org; > qemu-...@nongnu.org; m...@redhat.com > > Hi Salil, > > On 8/7/24 11:27 PM, Salil Mehta wrote: > > > > Let me figure out this. Have you a

Re: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-07 Thread Gavin Shan
Hi Salil, On 8/7/24 11:27 PM, Salil Mehta wrote: Let me figure out this. Have you also included the below patch along with the architecture agnostic patch-set accepted in this Qemu cycle? https://lore.kernel.org/all/20240801142322.3948866-3-peter.mayd...@linaro.org/ There are no vCPU fd to

RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-07 Thread Salil Mehta via
Hi Gavin, I tested ARM arch specific patches with the latest Qemu which contains below mentioned fix and I cannot reproduce the crash. I used kernel linux-6.11-rc2 and it booted successfully. Though I did see a kernel crash on attempting to hotplug first vCPU. (qemu) device_add host-arm-cpu,id

RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-07 Thread Salil Mehta via
Hi Gavin, Let me figure out this. Have you also included the below patch along with the architecture agnostic patch-set accepted in this Qemu cycle? https://lore.kernel.org/all/20240801142322.3948866-3-peter.mayd...@linaro.org/ Thanks Salil. > From: Gavin Shan > Sent: Wednesday, August 7, 2

Re: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-08-07 Thread Gavin Shan
Hi Salil, With this series and latest upstream Linux kernel (host), I ran into core dump as below. I'm not sure if it's a known issue or not. # uname -r 6.11.0-rc2-gavin+ # /home/gavin/sandbox/qemu.main/build/qemu-system-aarch64 -accel kvm \ -machine virt,gic-version=host,nvdimm=on -cpu host

RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-07-01 Thread Salil Mehta via
HI Miguel, > From: Miguel Luis > Sent: Monday, July 1, 2024 12:39 PM > To: Salil Mehta > > Hi Salil, > > > On 13 Jun 2024, at 23:36, Salil Mehta wrote: > > > > PROLOGUE > > > > > > To assist in review and set the right expectations from this RFC, > > please first read th

Re: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-07-01 Thread Miguel Luis
Hi Salil, > On 13 Jun 2024, at 23:36, Salil Mehta wrote: > > PROLOGUE > > > To assist in review and set the right expectations from this RFC, please first > read the sections *APPENDED AT THE END* of this cover letter: > > 1. Important *DISCLAIMER* [Section (X)] > 2. Work presented at

RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-06-26 Thread Salil Mehta via
Hi Vishnu, > From: Vishnu Pajjuri > Sent: Wednesday, June 26, 2024 10:53 AM > To: Salil Mehta ; qemu-devel@nongnu.org; > qemu-...@nongnu.org; m...@redhat.com > > Hi Salil, > On 14-06-2024 05:06, Salil Mehta wrote: > PROLOGUE > > > To assist in review and set the right expectations f

Re: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-06-26 Thread Vishnu Pajjuri
Hi Salil, On 14-06-2024 05:06, Salil Mehta wrote: PROLOGUE To assist in review and set the right expectations from this RFC, please first read the sections *APPENDED AT THE END* of this cover letter: 1. Important *DISCLAIMER* [Section (X)] 2. Work presented at KVMForum Conference (sli

[PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

2024-06-13 Thread Salil Mehta via
PROLOGUE To assist in review and set the right expectations from this RFC, please first read the sections *APPENDED AT THE END* of this cover letter: 1. Important *DISCLAIMER* [Section (X)] 2. Work presented at KVMForum Conference (slides available) [Section (V)F] 3. Organization of patc