Messages in this thread | | | From | Zhangfei Gao <> | Subject | Commit 282d8998e997 (srcu: Prevent expedited GPs and blocking readers from consuming CPU) cause qemu boot slow | Date | Sun, 12 Jun 2022 00:32:59 +0800 |
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Hi, Paul
When verifying qemu with acpi rmr feature on v5.19-rc1, the guest kernel stuck for several minutes. And on 5.18, there is no such problem.
After revert this patch, the issue solved. Commit 282d8998e997 (srcu: Prevent expedited GPs and blocking readers from consuming CPU)
qemu cmd: build/aarch64-softmmu/qemu-system-aarch64 -machine virt,gic-version=3,iommu=smmuv3 \ -enable-kvm -cpu host -m 1024 \ -kernel Image -initrd mini-rootfs.cpio.gz -nographic -append \ "rdinit=init console=ttyAMA0 earlycon=pl011,0x9000000 kpti=off acpi=force" \ -bios QEMU_EFI.fd
log: InstallProtocolInterface: 5B1B31A1-9562-11D2-8E3F-00A0C969723B 7AA4D040 add-symbol-file /home/linaro/work/edk2/Build/ArmVirtQemu-AARCH64/DEBUG_GCC48/AARCH64/NetworkPkg/IScsiDxe/IScsiDxe/DEBUG/IScsiDxe.dll 0x75459000 Loading driver at 0x00075458000 EntryPoint=0x00075459058 IScsiDxe.efi InstallProtocolInterface: BC62157E-3E33-4FEC-9920-2D3B36D750DF 7AA4DE98 ProtectUefiImageCommon - 0x7AA4D040 - 0x0000000075458000 - 0x000000000003F000 SetUefiImageMemoryAttributes - 0x0000000075458000 - 0x0000000000001000 (0x0000000000004008) SetUefiImageMemoryAttributes - 0x0000000075459000 - 0x000000000003B000 (0x0000000000020008) SetUefiImageMemoryAttributes - 0x0000000075494000 - 0x0000000000003000 (0x0000000000004008) InstallProtocolInterface: 18A031AB-B443-4D1A-A5C0-0C09261E9F71 754952C8 InstallProtocolInterface: 107A772C-D5E1-11D4-9A46-0090273FC14D 75495358 InstallProtocolInterface: 6A7A5CFF-E8D9-4F70-BADA-75AB3025CE14 75495370 InstallProtocolInterface: 18A031AB-B443-4D1A-A5C0-0C09261E9F71 754952F8 InstallProtocolInterface: 107A772C-D5E1-11D4-9A46-0090273FC14D 75495358 InstallProtocolInterface: 6A7A5CFF-E8D9-4F70-BADA-75AB3025CE14 75495370 InstallProtocolInterface: 59324945-EC44-4C0D-B1CD-9DB139DF070C 75495348 InstallProtocolInterface: 09576E91-6D3F-11D2-8E39-00A0C969723B 754953E8 InstallProtocolInterface: 330D4706-F2A0-4E4F-A369-B66FA8D54385 7AA4D728
Not sure it is either reported or solved.
Thanks
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