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[v2,0/3] RISC-V virt MHP support

Message ID 20240521105635.795211-1-bjorn@kernel.org
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Series RISC-V virt MHP support | expand

Message

Björn Töpel May 21, 2024, 10:56 a.m. UTC 
From: Björn Töpel <bjorn@rivosinc.com>

The RISC-V "virt" machine is currently missing memory hotplugging
support (MHP). This series adds the missing virtio-md, and PC-DIMM
support.

I've include both the ACPI MHP/GED/PC-DIMM, and virtio-md in the same
series. The two patches (virtio-md) are probably less controversial,
and can be pulled separately from the last patch.

The first patch includes MHP that works with DT. The second patch is
basic device memory ACPI SRAT plumbing.

The third patch includes ACPI GED, and ACPI MHP/PC-DIMM support.


Changelog

v1->v2:
 * Cap the maximum number of supported ram slots (Daniel)
 * Split the ACPI parts out from virtio-md patch (Daniel)
 * Allow for max 1G PC-DIMM alignment per ram slot (Daniel)
 * Add missing defined(__riscv__) for virtio-mem code
 * Include PC-DIMM MHP supportin the series
 * Misc code structure changes

Cheers,
Björn


Björn Töpel (3):
  hw/riscv/virt: Add memory hotplugging and virtio-md-pci support
  hw/riscv/virt-acpi-build: Expose device memory in ACPI SRAT
  hw/riscv/virt: Add ACPI GED and PC-DIMM MHP support

 hw/riscv/Kconfig           |   5 +
 hw/riscv/virt-acpi-build.c |  23 +++++
 hw/riscv/virt.c            | 183 ++++++++++++++++++++++++++++++++++++-
 hw/virtio/virtio-mem.c     |   5 +-
 include/hw/riscv/virt.h    |   6 +-
 5 files changed, 218 insertions(+), 4 deletions(-)


base-commit: 01782d6b294f95bcde334386f0aaac593cd28c0d