Offline tasks (BT tasks) may have some performance impact to online
tasks.
In this commit, we introduce Intel RDT features to limit offline tasks
L3 cache usage to avoid the influence caused by offline tasks.
Signed-off-by: Xiaoguang Chen <xiaoggchen@tencent.com>
Signed-off-by: He Chen <heddchen@tencent.com>
In patch 660998b7a9, merged codes in
function amd_get_topology() not works for Hygon Family 18h.
Move Hygon CPU socket ID calculation codes to cacheinfo_amd_init_llc_id()
function,to make Socket ID calculate codes works for Hygon Family 18h CPU.
Based on upstream commit:
d63bae0 KVM: X86: Add kvm hypervisor init time platform setup callback
aaffcfd KVM: X86: Implement PV IPIs in linux guest
Implement paravirtual apic hooks to enable PV IPIs for KVM if the "send IPI"
hypercall is available. The hypercall lets a guest send IPIs, with
at most 128 destinations per hypercall in 64-bit mode and 64 vCPUs per
hypercall in 32-bit mode.
Signed-off-by: loobinliu <loobinliu@tencent.com>
As the comment already stated, there is no need for setting up LDR (and
DFR) in physflat mode as it remains unused (see SDM, 10.6.2.1).
flat_init_apic_ldr only served as a placeholder for a nop operation so
far, causing no harm.
That will change when running over the Jailhouse hypervisor. Here we
must not touch LDR in a way that destroys the mapping originally set up
by the Linux root cell. Jailhouse enforces this setting in order to
efficiently validate any IPI requests sent by a cell.
Avoid a needless clash caused by flat_init_apic_ldr by installing a true
nop handler.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: jailhouse-dev@googlegroups.com
Link: https://lkml.kernel.org/r/f9867d294cdae4d45ed89d3a2e6adb524f4f6794.1511770314.git.jan.kiszka@siemens.com
Backported from linux-tip ras/core
x86/MCE/AMD, EDAC/mce_amd: Add new MP5, NBIO, and PCIE SMCA bank types
x86/MCE/AMD, EDAC/mce_amd: Add new McaTypes for CS, PSP, and SMU units
x86/MCE/AMD, EDAC/mce_amd: Add new error descriptions for some SMCA bank types
Signed-off-by: Xiaoming Gao <newtongao@tencent.com>
Patches backported from linux-stable branch
perf/events/amd/uncore: Fix amd_uncore_llc ID to use pre-defined cpu_llc_id
x86/CPU: Rename intel_cacheinfo.c to cacheinfo.c
x86/CPU/AMD: Calculate last level cache ID from number of sharing threads
x86/CPU: Modify detect_extended_topology() to return result
x86/CPU/AMD: Derive CPU topology from CPUID function 0xB when available
x86/CPU/AMD: Fix LLC ID bit-shift calculation
Signed-off-by: Xiaoming Gao <newtongao@tencent.com>
Add dump stack logic when kmem_alloc failed.
kmem_alloc_by_vmalloc: when kmem_alloc size larger than PAGE_SIZE*kmem_alloc_by_vmalloc,
use vmalloc instead kmalloc.
kmem_alloc_large_dump_stack: dump info and stack when kmem_alloc size
larger than PAGE_SIZE*kmem_alloc_by_vmalloc.
Signed-off-by: Xiaoming Gao <newtongao@tencent.com>
Signed-off-by: Kaixu Xia <kaixuxia@tencent.com>
if vector not assigned in vector_irq, do_IRQ will fail and print
warning like "No irq handler for vector (irq -1)"
Signed-off-by: Xiaoming Gao <newtongao@tencent.com>
Signed-off-by: Liu Hua <shookliu@tencent.com>
Liu Hua