Messages in this thread |  | | From | Ankur Arora <> | | Subject | [PATCH 0/5] xen/pvh*: Support > 32 VCPUs at restore | | Date | Fri, 2 Jun 2017 17:05:57 -0700 |
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This patch series fixes a bunch of issues in the xen_vcpu setup logic.
Simplify xen_vcpu related code: code refactoring in advance of the rest of the patch series.
Support > 32 VCPUs at restore: unify all vcpu restore logic in xen_vcpu_restore() and support > 32 VCPUs for PVH*.
Remove vcpu info placement from restore (!SMP): some pv_ops are marked RO after init so lets not redo xen_setup_vcpu_info_placement at restore.
Handle xen_vcpu_setup() failure in hotplug: handle vcpu_info registration failures by propagating them from the cpuhp-prepare callback back up to the cpuhp logic.
Handle xen_vcpu_setup() failure at boot: pull CPUs (> MAX_VIRT_CPUS) down if we fall back to xen_have_vcpu_info_placement = 0.
Tested with various combinations of PV/PVHv2/PVHVM save/restore and cpu-hotadd-hotremove. Also tested by simulating failure in VCPUOP_register_vcpu_info.
Please review.
Ankur Arora (5): xen/vcpu: Simplify xen_vcpu related code xen/pvh*: Support > 32 VCPUs at domain restore xen/pv: Fix OOPS on restore for a PV, !SMP domain xen/vcpu: Handle xen_vcpu_setup() failure in hotplug xen/vcpu: Handle xen_vcpu_setup() failure at boot
arch/x86/xen/enlighten.c | 154 +++++++++++++++++++++++++++++++------------ arch/x86/xen/enlighten_hvm.c | 33 ++++------ arch/x86/xen/enlighten_pv.c | 87 +++++++++++------------- arch/x86/xen/smp.c | 31 +++++++++ arch/x86/xen/smp.h | 2 + arch/x86/xen/smp_hvm.c | 14 +++- arch/x86/xen/smp_pv.c | 6 +- arch/x86/xen/suspend_hvm.c | 11 +--- arch/x86/xen/xen-ops.h | 3 +- include/xen/xen-ops.h | 2 + 10 files changed, 218 insertions(+), 125 deletions(-)
-- 2.7.4
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