search for: config_memory_hotplug_default_onlin

? 2020/1/9 ??9:48, David Hildenbrand ??: > Ping, > > I'd love to get some feedback on > > a) The remaining MM bits from MM folks (especially, patch #6 and #8). > b) The general virtio infrastructure (esp. uapi in patch #2) from virtio > folks. > > I'm planning to send a proper v1 (!RFC) once I have all necessary MM > acks. In the meanwhile, I will do more

? 2020/1/9 ??9:48, David Hildenbrand ??: > Ping, > > I'd love to get some feedback on > > a) The remaining MM bits from MM folks (especially, patch #6 and #8). > b) The general virtio infrastructure (esp. uapi in patch #2) from virtio > folks. > > I'm planning to send a proper v1 (!RFC) once I have all necessary MM > acks. In the meanwhile, I will do more

...reported by Hui in [1], > which boiled down to wrong usage of the swiotlb parameter. > > In such cases you should always try to reproduce with hotplug of a > sam-sized DIMM. E.g., hotplugging a 1GB DIMM should result in the same > issue. > > What does your .config specify for CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE? > > I'll try to reproduce with v4 briefly. I guess I know what's happening here. In case we only have DMA memory when booting, we don't reserve swiotlb buffers. Once we hotplug memory and online ZONE_NORMAL, we don't have any swiotlb DMA bounce buffers to map such PFNs (to...

...reported by Hui in [1], > which boiled down to wrong usage of the swiotlb parameter. > > In such cases you should always try to reproduce with hotplug of a > sam-sized DIMM. E.g., hotplugging a 1GB DIMM should result in the same > issue. > > What does your .config specify for CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE? > > I'll try to reproduce with v4 briefly. I guess I know what's happening here. In case we only have DMA memory when booting, we don't reserve swiotlb buffers. Once we hotplug memory and online ZONE_NORMAL, we don't have any swiotlb DMA bounce buffers to map such PFNs (to...

...t;> which boiled down to wrong usage of the swiotlb parameter. >> >> In such cases you should always try to reproduce with hotplug of a >> sam-sized DIMM. E.g., hotplugging a 1GB DIMM should result in the same >> issue. >> >> What does your .config specify for CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE? >> >> I'll try to reproduce with v4 briefly. > > I guess I know what's happening here. In case we only have DMA memory > when booting, we don't reserve swiotlb buffers. Once we hotplug memory > and online ZONE_NORMAL, we don't have any swiotlb DMA bounce b...

...memory. There was a similar issue reported by Hui in [1], which boiled down to wrong usage of the swiotlb parameter. In such cases you should always try to reproduce with hotplug of a sam-sized DIMM. E.g., hotplugging a 1GB DIMM should result in the same issue. What does your .config specify for CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE? I'll try to reproduce with v4 briefly. [1] https://lkml.kernel.org/r/9708F43A-9BD2-4377-8EE8-7FB1D95C6F69 at linux.alibaba.com > > Thanks > Alex > > > (qemu) qom-set vm0 requested-size 1g > (qemu) [ 26.560026] virtio_mem virtio0: plugged size: 0x0 > [ 26.5606...

...rchitecture, MAX_ORDER, pageblock_order, and > the block size of a virtio-mem device. > > add_memory()/try_remove_memory() is used to add/remove memory blocks. > virtio-mem will not online memory blocks itself. This has to be done by > user space, or configured into the kernel > (CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE). virtio-mem will only unplug memory > that was online to the ZONE_NORMAL. Memory is suggested to be onlined to > the ZONE_NORMAL for now. > > The memory hotplug notifier is used to properly synchronize against > onlining/offlining of memory blocks and to track the states of memory...

Fix several warnings and broken links. This series was generated against linux-next, but was rebased to be applied at docs-next. It should apply cleanly on either tree. There's a git tree with all of them applied on the top of docs/docs-next at: https://git.linuxtv.org/mchehab/experimental.git/log/?h=fix_doc_links_v2 Mauro Carvalho Chehab (21): ABI: sysfs-devices-system-cpu: point to

...hine Check Exception - mce=option [X86-64] See Documentation/x86/x86_64/boot-options.txt + mce=option [X86-64] See Documentation/x86/x86_64/boot-options.rst md= [HW] RAID subsystems devices and level See Documentation/admin-guide/md.rst. @@ -2452,7 +2452,7 @@ set according to the CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE kernel config option. - See Documentation/memory-hotplug.txt. + See Documentation/admin-guide/mm/memory-hotplug.rst. memmap=exactmap [KNL,X86] Enable setting of an exact E820 memory map, as specified by the user. @@ -2541,7 +2541,7 @@ mem_encrypt=on: Activate SME mem_encry...

...hine Check Exception - mce=option [X86-64] See Documentation/x86/x86_64/boot-options.txt + mce=option [X86-64] See Documentation/x86/x86_64/boot-options.rst md= [HW] RAID subsystems devices and level See Documentation/admin-guide/md.rst. @@ -2439,7 +2439,7 @@ set according to the CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE kernel config option. - See Documentation/memory-hotplug.txt. + See Documentation/admin-guide/mm/memory-hotplug.rst. memmap=exactmap [KNL,X86] Enable setting of an exact E820 memory map, as specified by the user. @@ -2528,7 +2528,7 @@ mem_encrypt=on: Activate SME mem_encry...

...[X86-64] See Documentation/x86/x86_64/boot- options.txt > + mce=option [X86-64] See Documentation/x86/x86_64/boot- options.rst > > md= [HW] RAID subsystems devices and level > See Documentation/admin-guide/md.rst. > @@ -2439,7 +2439,7 @@ > set according to the > CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE kernel config > option. > - See Documentation/memory-hotplug.txt. > + See Documentation/admin-guide/mm/memory- hotplug.rst. > > memmap=exactmap [KNL,X86] Enable setting of an exact > E820 memory map, as specified by the user. > @@ -2528,7 +2528,7 @@ > me...

...[X86-64] See Documentation/x86/x86_64/boot- options.txt > + mce=option [X86-64] See Documentation/x86/x86_64/boot- options.rst > > md= [HW] RAID subsystems devices and level > See Documentation/admin-guide/md.rst. > @@ -2439,7 +2439,7 @@ > set according to the > CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE kernel config > option. > - See Documentation/memory-hotplug.txt. > + See Documentation/admin-guide/mm/memory- hotplug.rst. > > memmap=exactmap [KNL,X86] Enable setting of an exact > E820 memory map, as specified by the user. > @@ -2528,7 +2528,7 @@ > me...

...hine Check Exception - mce=option [X86-64] See Documentation/x86/x86_64/boot-options.txt + mce=option [X86-64] See Documentation/x86/x86_64/boot-options.rst md= [HW] RAID subsystems devices and level See Documentation/admin-guide/md.rst. @@ -2439,7 +2439,7 @@ set according to the CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE kernel config option. - See Documentation/memory-hotplug.txt. + See Documentation/admin-guide/mm/memory-hotplug.rst. memmap=exactmap [KNL,X86] Enable setting of an exact E820 memory map, as specified by the user. @@ -2528,7 +2528,7 @@ mem_encrypt=on: Activate SME mem_encry...

...hine Check Exception - mce=option [X86-64] See Documentation/x86/x86_64/boot-options.txt + mce=option [X86-64] See Documentation/x86/x86_64/boot-options.rst md= [HW] RAID subsystems devices and level See Documentation/admin-guide/md.rst. @@ -2439,7 +2439,7 @@ set according to the CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE kernel config option. - See Documentation/memory-hotplug.txt. + See Documentation/admin-guide/mm/memory-hotplug.rst. memmap=exactmap [KNL,X86] Enable setting of an exact E820 memory map, as specified by the user. @@ -2528,7 +2528,7 @@ mem_encrypt=on: Activate SME mem_encry...

...gt; options.txt > > + mce=option [X86-64] See Documentation/x86/x86_64/boot- > options.rst > > > > md= [HW] RAID subsystems devices and level > > See Documentation/admin-guide/md.rst. > > @@ -2439,7 +2439,7 @@ > > set according to the > > CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE > kernel config > > option. > > - See Documentation/memory-hotplug.txt. > > + See Documentation/admin-guide/mm/memory- > hotplug.rst. > > > > memmap=exactmap [KNL,X86] Enable setting of an exact > > E820 memory map, as specified by the user...

...sizes depend on the target architecture, MAX_ORDER + pageblock_order, and the block size of a virtio-mem device. add_memory()/try_remove_memory() is used to add/remove memory blocks. virtio-mem will not online memory blocks itself. This has to be done by user space, or configured into the kernel (CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE). virtio-mem will only unplug memory that was online to the ZONE_NORMAL. Memory is suggested to be onlined to the ZONE_NORMAL for now. The memory hotplug notifier is used to properly synchronize against onlining/offlining of memory blocks and to track the states of memory blocks (including the zo...

...e sizes depend on the target architecture, MAX_ORDER, pageblock_order, and the block size of a virtio-mem device. add_memory()/try_remove_memory() is used to add/remove memory blocks. virtio-mem will not online memory blocks itself. This has to be done by user space, or configured into the kernel (CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE). virtio-mem will only unplug memory that was online to the ZONE_NORMAL. Memory is suggested to be onlined to the ZONE_NORMAL for now. The memory hotplug notifier is used to properly synchronize against onlining/offlining of memory blocks and to track the states of memory blocks (including the zo...

...e sizes depend on the target architecture, MAX_ORDER, pageblock_order, and the block size of a virtio-mem device. add_memory()/try_remove_memory() is used to add/remove memory blocks. virtio-mem will not online memory blocks itself. This has to be done by user space, or configured into the kernel (CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE). virtio-mem will only unplug memory that was online to the ZONE_NORMAL. Memory is suggested to be onlined to the ZONE_NORMAL for now. The memory hotplug notifier is used to properly synchronize against onlining/offlining of memory blocks and to track the states of memory blocks (including the zo...

...y CONFIG_SPARSEMEM_MANUAL=y CONFIG_SPARSEMEM=y CONFIG_HAVE_MEMORY_PRESENT=y CONFIG_SPARSEMEM_EXTREME=y CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y CONFIG_SPARSEMEM_VMEMMAP=y CONFIG_HAVE_MEMBLOCK_NODE_MAP=y CONFIG_HAVE_FAST_GUP=y CONFIG_MEMORY_ISOLATION=y CONFIG_MEMORY_HOTPLUG=y CONFIG_MEMORY_HOTPLUG_SPARSE=y CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE=y # CONFIG_MEMORY_HOTREMOVE is not set CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_MEMORY_BALLOON=y CONFIG_BALLOON_COMPACTION=y CONFIG_COMPACTION=y CONFIG_MIGRATION=y CONFIG_CONTIG_ALLOC=y CONFIG_PHYS_ADDR_T_64BIT=y CONFIG_VIRT_TO_BUS=y CONFIG_MMU_NOTIFIER=y # CONFIG_KSM is not set CONFIG_DEFAULT_MMAP_MIN_A...

Setting the IF flag can cause an VM exit. So we should avoid touching the IF flag until absolutely necessary. This patch change the way the paravirt arch_local_irq_restore() works by checking the previous flags value and call arch_local_irq_enable() only if the IF flag was set previously. On a 32 vCPUs KVM guest running the AIM7 five-sec workload, the performance increased slightly from 302136.32