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scripts: improve configure-hypervisor.sh

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Change weird condition to check qemu >=3.1
Add comment explaining the malloc-trim option.

fixes #462

Signed-off-by: Julio Montes <julio.montes@intel.com>
This commit is contained in:
Julio Montes 2019-04-26 07:34:48 -05:00
parent b5eaf1f847
commit c0f0fc9f9b
1 changed files with 4 additions and 3 deletions
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7
scripts/configure-hypervisor.sh
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@ -304,7 +304,7 @@ generate_qemu_options() {
# implicitly enabled in Fedora 27).
qemu_options+=(size:--disable-linux-aio)
if [[ "${qemu_version_major}" -ge 4 || ( "${qemu_version_major}" -ge 3 && "${qemu_version_minor}" -ge 1 ) ]]; then
if [[ "${qemu_version_major}" -ge 4 || ( "${qemu_version_major}" -eq 3 && "${qemu_version_minor}" -ge 1 ) ]]; then
# Disable libpmem, vNVDIMM backend (aka rootfs image) shouldn't be modifed
# by the guest
qemu_options+=(security:--disable-libpmem)
@ -361,9 +361,10 @@ generate_qemu_options() {
qemu_options+=(functionality:--enable-attr)
qemu_options+=(functionality:--enable-cap-ng)
# AVX2 is enabled by default, make sure it's on
if [[ "${qemu_version_major}" -ge 4 || ( "${qemu_version_major}" -ge 3 && "${qemu_version_minor}" -ge 1 ) ]]; then
if [[ "${qemu_version_major}" -ge 4 || ( "${qemu_version_major}" -eq 3 && "${qemu_version_minor}" -ge 1 ) ]]; then
# AVX2 is enabled by default, make sure it's on.
qemu_options+=(speed:--enable-avx2)
# Enable libc malloc_trim() for memory optimization.
qemu_options+=(speed:--enable-malloc-trim)
fi