Bug 987129
| Summary: | Fedora 19 - does register hotplugged cpu1 | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | steve <fourstar10_2000> |
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | urgent | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 19 | CC: | drjones, gansalmon, imammedo, itamar, jonathan, kernel-maint, madhu.chinakonda |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-07-23 18:00:27 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
/dev/cpu/1 missing Including the rules below fixed the issue. Udev should be updated to include these rules in 5-0default-rules KERNEL="cpu[0-9]*", NAME="cpu/%n/cpuid" KERNEL="msr[0-9]*", NAME="cpu/%n/msr" KERNEL="microcode", NAME="cpu/microcode" |
Fedora 19 - does register hotplugged cpu1 Fedora-19 shows: /sys/devices/system/cpu/cpu1\ BUT NOT: /sys/devices/virtual/cpuid/cpu1\ strace udevadm --debug monitor ###when adding cpu1 recvmsg(5, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000001}, msg_iov(1)=[{"add@/devices/system/cpu/cpu1\0ACT"..., 8192}], msg_controllen=32, {cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS{pid=0, uid=0, gid=0}}, msg_flags=0}, 0) = 425 clock_gettime(CLOCK_MONOTONIC, {238115, 687196498}) = 0 write(1, "KERNEL[238115.687196] add /"..., 62) = 62 Fedora-18 shows: /sys/devices/system/cpu/cpu1\ /sys/devices/virtual/cpuid/cpu1\ strace udevadm --debug monitor ###when adding cpu1 recvmsg(5, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000001}, msg_iov(1)=[{"add@/devices/system/cpu/cpu1\0ACT"..., 8192}], msg_controllen=32, {cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS{pid=0, uid=0, gid=0}}, msg_flags=0}, 0) = 425 clock_gettime(CLOCK_MONOTONIC, {247341, 263395029}) = 0 write(1, "KERNEL[247341.263395] add /"..., 62) = 62 epoll_wait(3, {?} 0x7fff5cfd59b0, 4, -1) = 2 recvmsg(5, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000001}, msg_iov(1)=[{"add@/devices/virtual/cpuid/cpu1\0"..., 8192}], msg_controllen=32, {cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS{pid=0, uid=0, gid=0}}, msg_flags=0}, 0) = 145 clock_gettime(CLOCK_MONOTONIC, {247341, 267196621}) = 0 Kernel configuration CONFIG_HOTPLUG=y CONFIG_MEMORY_HOTPLUG=y CONFIG_MEMORY_HOTPLUG_SPARSE=y CONFIG_HOTPLUG_CPU=y CONFIG_BOOTPARAM_HOTPLUG_CPU0=y CONFIG_DEBUG_HOTPLUG_CPU0=y CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y CONFIG_ACPI_HOTPLUG_CPU=y CONFIG_ACPI_HOTPLUG_MEMORY=y CONFIG_HOTPLUG_PCI_PCIE=y CONFIG_HOTPLUG_PCI=y CONFIG_HOTPLUG_PCI_ACPI=y CONFIG_HOTPLUG_PCI_ACPI_IBM=m # CONFIG_HOTPLUG_PCI_CPCI is not set CONFIG_HOTPLUG_PCI_SHPC=y # CONFIG_XEN_BALLOON_MEMORY_HOTPLUG is not set Test Case: console1: strace -o process_dump -ff udevadm --debug monitor console2: udevadm trigger --verbose --sysname-match=cpu1 --action=add Use Case: These are KVM hotplugged CPU's running in a virtual machine. The CPU's are hot-added.