Add a script to demonstrate HMAT emulation using qemu by injecting the initramfs with a made-up ACPI HMAT table.
Cc: Dan Williams <[email protected]> Originally-authored-by: Keith Busch <[email protected]> [vishal: minor shellcheck fixups] Signed-off-by: Vishal Verma <[email protected]> --- contrib/daxctl-qemu-hmat-setup | 211 +++++++++++++++++++++++++++++++++ 1 file changed, 211 insertions(+) create mode 100755 contrib/daxctl-qemu-hmat-setup diff --git a/contrib/daxctl-qemu-hmat-setup b/contrib/daxctl-qemu-hmat-setup new file mode 100755 index 0000000..0670e99 --- /dev/null +++ b/contrib/daxctl-qemu-hmat-setup @@ -0,0 +1,211 @@ +#!/bin/bash -e + +# SPDX-License-Identifier: GPL-2.0 +# Copyright(c) 2019 Intel Corporation. All rights reserved. + +KERNEL=${KERNEL:-$(uname -r)} +ROOT_IMAGE=${ROOT_IMAGE:-root.img} + +INITIATORS=4 +TARGETS=128 +TARGET_SIZE_MB=128 +TARGET_SIZE="$((TARGET_SIZE_MB * 1024 * 1024))" +QEMU_MEM="$((TARGET_SIZE_MB * TARGETS))" + +for i in $(seq 0 $((TARGETS - 1))); do + qemu-img create -f raw "dimm-$i" "${TARGET_SIZE}" +done; + +# Address Range Structures +cat <<EOF > hmat.dsl + Signature : "HMAT" [Heterogeneous Memory Attributes Table] + Table Length : 00000200 + Revision : 01 + Checksum : F4 + Oem ID : "BOCHS " + Oem Table ID : "BXPCHMAT" + Oem Revision : 00000001 + Asl Compiler ID : "INTL" + Asl Compiler Revision : 20170929 + Reserved : 00000000 + + Structure Type : 0000 [Memory Subystem Address Range] + Reserved : 0000 + Length : 00000028 + Flags (decoded below) : 0003 +Processor Proximity Domain Valid : 1 + Memory Proximity Domain Valid : 1 + Reservation Hint : 0 + Reserved1 : 0000 + Processor Proximity Domain : 00000000 + Memory Proximity Domain : 00000000 + Reserved2 : 00000000 + Physical Address Range Base : 0000000000000000 + Physical Address Range Size : 00000000000A0000 + + Structure Type : 0000 [Memory Subystem Address Range] + Reserved : 0000 + Length : 00000028 + Flags (decoded below) : 0003 +Processor Proximity Domain Valid : 1 + Memory Proximity Domain Valid : 1 + Reservation Hint : 0 + Reserved1 : 0000 + Processor Proximity Domain : 00000000 + Memory Proximity Domain : 00000000 + Reserved2 : 00000000 + Physical Address Range Base : 0000000000100000 + Physical Address Range Size : 0000000007F00000 +EOF + +for i in $(seq 1 $((TARGETS - 1))); do + BASE=$(printf "%016x" $((0x8000000 * i))) +cat <<EOF >> hmat.dsl + + Structure Type : 0000 [Memory Subystem Address Range] + Reserved : 0000 + Length : 00000028 + Flags (decoded below) : 0003 +Processor Proximity Domain Valid : 1 + Memory Proximity Domain Valid : 1 + Reservation Hint : 0 + Reserved1 : 0000 + Processor Proximity Domain : $(printf "%08x" $((i % INITIATORS))) + Memory Proximity Domain : $(printf "%08x" "${i}") + Reserved2 : 00000000 + Physical Address Range Base : ${BASE} + Physical Address Range Size : 0000000008000000 +EOF +done + +# System Locality Latency +TABLE_SIZE="$(printf "%08x" $((40 + 4 * INITIATORS + 4 * TARGETS + 2 * INITIATORS * TARGETS)))" +cat <<EOF >> hmat.dsl + + Structure Type : 0001 [System Locality Latency and Bandwidth Information] + Reserved : 0000 + Length : ${TABLE_SIZE} + Flags (decoded below) : 00 + Memory Hierarchy : 0 + Data Type : 00 + Reserved1 : 0000 + Initiator Proximity Domains # : $(printf "%08x" ${INITIATORS}) + Target Proximity Domains # : $(printf "%08x" ${TARGETS}) + Reserved2 : 00000000 + Entry Base Unit : 0000000000000001 +EOF + +for i in $(seq 0 $((INITIATORS - 1))); do +cat <<EOF >> hmat.dsl + Initiator Proximity Domain List : $(printf "%08x" "${i}") +EOF +done + +for i in $(seq 0 $((TARGETS - 1))); do +cat <<EOF >> hmat.dsl + Target Proximity Domain List : $(printf "%08x" "${i}") +EOF +done + +LOCAL_START=0x10 +REMOTE_START=0x20 +for i in $(seq 0 $((INITIATORS - 1))); do + for j in $(seq 0 $((TARGETS - 1))); do + if [ "$((j % INITIATORS))" -eq "${i}" ]; then + cat <<EOF >> hmat.dsl + Entry : $(printf "%04x" $((LOCAL_START + j * 10))) +EOF + else + cat <<EOF >> hmat.dsl + Entry : $(printf "%04x" $((REMOTE_START + j * 10))) +EOF + fi + done +done + +# System Locality Bandwidth +TABLE_SIZE=$(printf "%08x" $((40 + 4 * INITIATORS + 4 * TARGETS + 2 * INITIATORS * TARGETS))) +cat <<EOF >> hmat.dsl + + Structure Type : 0001 [System Locality Latency and Bandwidth Information] + Reserved : 0000 + Length : ${TABLE_SIZE} + Flags (decoded below) : 00 + Memory Hierarchy : 0 + Data Type : 03 + Reserved1 : 0000 + Initiator Proximity Domains # : $(printf "%08x" ${INITIATORS}) + Target Proximity Domains # : $(printf "%08x" ${TARGETS}) + Reserved2 : 00000000 + Entry Base Unit : 0000000000000400 +EOF + +for i in $(seq 0 $((INITIATORS - 1))); do +cat <<EOF >> hmat.dsl + Initiator Proximity Domain List : $(printf "%08x" "${i}") +EOF +done + +for i in $(seq 0 $((TARGETS - 1))); do +cat <<EOF >> hmat.dsl + Target Proximity Domain List : $(printf "%08x" "${i}") +EOF +done + +LOCAL_START=0x2000 +REMOTE_START=0x1000 +for i in $(seq 0 $((INITIATORS - 1))); do + for j in $(seq 0 $((TARGETS - 1))); do + if [ "$((j % INITIATORS))" -eq "${i}" ]; then + cat <<EOF >> hmat.dsl + Entry : $(printf "%04x" $((LOCAL_START - j * 32))) +EOF + else + cat <<EOF >> hmat.dsl + Entry : $(printf "%04x" $((REMOTE_START - j * 32))) +EOF + fi + done +done + +# Side Caches +for i in $(seq 0 ${TARGETS}); do +cat <<EOF >> hmat.dsl + + Structure Type : 0002 [Memory Side Cache Information Structure] + Reserved : 0000 + Length : 00000020 + Memory Proximity Domain : $(printf "%08x" "${i}") + Reserved1 : 00000000 + Memory Side Cache Size : 0000000000100000 +Cache Attributes (decoded below) : 01001113 + Total Cache Levels : 1 + Cache Level : 1 + Cache Associativity : 1 + Write Policy : 1 + Cache Line Size : 0100 + Reserved2 : 0000 + SMBIOS Handle # : 0000 +EOF +done + +# Generate injected initrd +iasl ./*dsl +mkdir -p kernel/firmware/acpi/ +rm -f kernel/firmware/acpi/*.aml hmat-initramfs +cp ./*aml kernel/firmware/acpi/ +find kernel | cpio -c -o > hmat-initramfs +cat "/boot/initramfs-${KERNEL}.img" >> hmat-initramfs + +# Build and evaluate QEMU command line +QEMU="qemu-system-x86_64 -m ${QEMU_MEM} -smp 8,sockets=${INITIATORS},maxcpus=8 -machine pc,accel=kvm " +QEMU+="-enable-kvm -display none -nographic -snapshot -hda ${ROOT_IMAGE} " +QEMU+="-kernel /boot/vmlinuz-${KERNEL} -initrd ./hmat-initramfs " +QEMU+="-append \"console=tty0 console=ttyS0 root=/dev/sda rw\" " + +for i in $(seq 0 $((TARGETS - 1))); do + QEMU+="-object memory-backend-file,id=mem${i},share,mem-path=dimm-${i},size=${TARGET_SIZE_MB}M " + QEMU+="-numa node,nodeid=${i},memdev=mem${i} " +done + +eval "${QEMU}" -- 2.20.1 _______________________________________________ Linux-nvdimm mailing list [email protected] https://lists.01.org/mailman/listinfo/linux-nvdimm
