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The Scalable Matrix Extension (SME) does not require extra options
beyond setting the cpu to "max".
https://qemu-project.gitlab.io/qemu/system/arm/cpu-features.html#sme-cpu-property-examples
SME depends on SVE, so that will be enabled too even if you don't ask
for it by name.
--sve --sme -> SVE and SME
--sme -> SVE and SME
--sve -> Only SVE
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D152519
Files:
lldb/docs/use/qemu-testing.rst
lldb/scripts/lldb-test-qemu/run-qemu.sh
Index: lldb/scripts/lldb-test-qemu/run-qemu.sh
===================================================================
--- lldb/scripts/lldb-test-qemu/run-qemu.sh
+++ lldb/scripts/lldb-test-qemu/run-qemu.sh
@@ -6,7 +6,8 @@
echo -e " --help\t\t\tDisplay this information."
echo -e " --arch {arm|arm64}\t\tSelects architecture QEMU system emulation."
echo -e " --sve\t\t\t\tEnables AArch64 SVE mode."
- echo -e " --mte\t\t\t\tEnables AArch64 MTE mode.\n"
+ echo -e " --mte\t\t\t\tEnables AArch64 MTE mode."
+ echo -e " --sme\t\t\t\tEnables AArch64 SME mode."
echo -e " --rootfs {path}\t\tPath of root file system image."
echo -e " --qemu {path}\t\t\tPath of pre-installed qemu-system-*
executable."
echo -e " --kernel {path}\t\tPath of Linux kernel prebuilt image.\n"
@@ -50,6 +51,7 @@
--qemu) QEMU_BIN=$2; shift;;
--sve) SVE=1;;
--mte) MTE=1;;
+ --sme) SME=1;;
--help) print_usage 0 ;;
*) invalid_arg "$1" ;;
esac
@@ -104,16 +106,19 @@
if [[ $MTE ]]; then
echo "warning: --mte is supported by AArch64 targets only"
fi
+ if [[ $SME ]]; then
+ echo "warning: --sme is supported by AArch64 targets only"
+ fi
elif [[ "$ARCH" == "arm64" ]]; then
QEMU_MACHINE=virt
QEMU_SVE_MAX_VQ=4
QEMU_CPU="cortex-a53"
- if [[ $SVE ]] || [[ $MTE ]]; then
+ if [[ $SVE ]] || [[ $MTE ]] || [[ $SME ]]; then
QEMU_CPU="max"
fi
- if [[ $SVE ]]; then
+ if [[ $SVE ]] || [[ $SME ]]; then
QEMU_CPU="$QEMU_CPU,sve-max-vq=$QEMU_SVE_MAX_VQ"
fi
if [[ $MTE ]]; then
Index: lldb/docs/use/qemu-testing.rst
===================================================================
--- lldb/docs/use/qemu-testing.rst
+++ lldb/docs/use/qemu-testing.rst
@@ -93,8 +93,11 @@
* --sve option will enable AArch64 SVE mode.
-* --mte option will enable AArch64 MTE (memory tagging) mode.
- (can be used on its own or in addition to --sve)
+* --sme option will enable AArch64 SME mode (SME requires SVE, so this will
also
+ be enabled).
+
+* --mte option will enable AArch64 MTE (memory tagging) mode
+ (can be used on its own or in addition to --sve).
**Example:** Run QEMU Arm or AArch64 system emulation using run-qemu.sh
Index: lldb/scripts/lldb-test-qemu/run-qemu.sh
===================================================================
--- lldb/scripts/lldb-test-qemu/run-qemu.sh
+++ lldb/scripts/lldb-test-qemu/run-qemu.sh
@@ -6,7 +6,8 @@
echo -e " --help\t\t\tDisplay this information."
echo -e " --arch {arm|arm64}\t\tSelects architecture QEMU system emulation."
echo -e " --sve\t\t\t\tEnables AArch64 SVE mode."
- echo -e " --mte\t\t\t\tEnables AArch64 MTE mode.\n"
+ echo -e " --mte\t\t\t\tEnables AArch64 MTE mode."
+ echo -e " --sme\t\t\t\tEnables AArch64 SME mode."
echo -e " --rootfs {path}\t\tPath of root file system image."
echo -e " --qemu {path}\t\t\tPath of pre-installed qemu-system-* executable."
echo -e " --kernel {path}\t\tPath of Linux kernel prebuilt image.\n"
@@ -50,6 +51,7 @@
--qemu) QEMU_BIN=$2; shift;;
--sve) SVE=1;;
--mte) MTE=1;;
+ --sme) SME=1;;
--help) print_usage 0 ;;
*) invalid_arg "$1" ;;
esac
@@ -104,16 +106,19 @@
if [[ $MTE ]]; then
echo "warning: --mte is supported by AArch64 targets only"
fi
+ if [[ $SME ]]; then
+ echo "warning: --sme is supported by AArch64 targets only"
+ fi
elif [[ "$ARCH" == "arm64" ]]; then
QEMU_MACHINE=virt
QEMU_SVE_MAX_VQ=4
QEMU_CPU="cortex-a53"
- if [[ $SVE ]] || [[ $MTE ]]; then
+ if [[ $SVE ]] || [[ $MTE ]] || [[ $SME ]]; then
QEMU_CPU="max"
fi
- if [[ $SVE ]]; then
+ if [[ $SVE ]] || [[ $SME ]]; then
QEMU_CPU="$QEMU_CPU,sve-max-vq=$QEMU_SVE_MAX_VQ"
fi
if [[ $MTE ]]; then
Index: lldb/docs/use/qemu-testing.rst
===================================================================
--- lldb/docs/use/qemu-testing.rst
+++ lldb/docs/use/qemu-testing.rst
@@ -93,8 +93,11 @@
* --sve option will enable AArch64 SVE mode.
-* --mte option will enable AArch64 MTE (memory tagging) mode.
- (can be used on its own or in addition to --sve)
+* --sme option will enable AArch64 SME mode (SME requires SVE, so this will also
+ be enabled).
+
+* --mte option will enable AArch64 MTE (memory tagging) mode
+ (can be used on its own or in addition to --sve).
**Example:** Run QEMU Arm or AArch64 system emulation using run-qemu.sh
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