These two patches (one for Linux, one for Xen) allow PVHVM guests to use the per-cpu VCPU mechanism after migration. Currently when an PVHVM guest migrates all the per-cpu information is lost and we fallback on the shared_info structure. This is regardless if the HVM guest has 2 or 128 CPUs. Since the structure has an array for only 32 CPUs that means if we are to migrate a PVHVM guest - we can only do it up to 32 CPUs.
These patches fix it and allow more than 32 VCPUs to be migrated with PVHVM Linux guests. The Linux diff is: arch/x86/xen/enlighten.c | 21 ++++++++++++++++----- arch/x86/xen/suspend.c | 6 +----- arch/x86/xen/time.c | 3 +++ 3 files changed, 20 insertions(+), 10 deletions(-) while the Xen one is: xen/arch/x86/hvm/hvm.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
