Hi Paul,
On 2017/12/19 7:31, Paul E. McKenney wrote:
> On Tue, Dec 12, 2017 at 05:19:25PM +0800, liangli...@huawei.com wrote:
>> From: Lihao Liang <liangli...@huawei.com>
>>
>> This commit adds support of the qemu command qemu-system-aarch64
>> to rcutorture.
>>
>> Signed-off-by: Lihao Liang <liangli...@huawei.com>
>
> Queued for further review and testing, thank you!
>
> (This one has been on my list for quite some time.)
>
> Thanx, Paul
>
>> ---
>> This commit is against RCU's git tree rcu/dev branch
>>
>> commit 505b61b2ec1d ("EXP: rcu: Add debugging info to other assertion")
>>
>> Note that the max CPUs supported by qemu machine 'virt' is 8 so the value of
>> CONFIG_NR_CPUS in some test configuration files needs to be adjusted.
>>
>> tools/testing/selftests/rcutorture/bin/functions.sh | 17 +++++++++++++++--
>> 1 file changed, 15 insertions(+), 2 deletions(-)
>>
>> diff --git a/tools/testing/selftests/rcutorture/bin/functions.sh
>> b/tools/testing/selftests/rcutorture/bin/functions.sh
>> index 07a1377..0541d10 100644
>> --- a/tools/testing/selftests/rcutorture/bin/functions.sh
>> +++ b/tools/testing/selftests/rcutorture/bin/functions.sh
>> @@ -136,6 +136,9 @@ identify_boot_image () {
>> qemu-system-x86_64|qemu-system-i386)
>> echo arch/x86/boot/bzImage
>> ;;
>> + qemu-system-aarch64)
>> + echo arch/arm64/boot/Image
>> + ;;
>> *)
>> echo vmlinux
>> ;;
>> @@ -158,6 +161,9 @@ identify_qemu () {
>> elif echo $u | grep -q "Intel 80386"
>> then
>> echo qemu-system-i386
>> + elif echo $u | grep -q aarch64
>> + then
>> + echo qemu-system-aarch64
>> elif uname -a | grep -q ppc64
>> then
>> echo qemu-system-ppc64
>> @@ -176,16 +182,20 @@ identify_qemu () {
>> # Output arguments for the qemu "-append" string based on CPU type
>> # and the TORTURE_QEMU_INTERACTIVE environment variable.
>> identify_qemu_append () {
>> + local console=ttyS0
>> case "$1" in
>> qemu-system-x86_64|qemu-system-i386)
>> echo noapic selinux=0 initcall_debug debug
>> ;;
>> + qemu-system-aarch64)
>> + console=ttyAMA0
>> + ;;
>> esac
>> if test -n "$TORTURE_QEMU_INTERACTIVE"
>> then
>> echo root=/dev/sda
>> else
>> - echo console=ttyS0
>> + echo console=$console
>> fi
>> }
>>
>> @@ -197,6 +207,9 @@ identify_qemu_args () {
>> case "$1" in
>> qemu-system-x86_64|qemu-system-i386)
>> ;;
>> + qemu-system-aarch64)
>> + echo -M virt -cpu host
The qemu option "-M virt" only supports maximum 8 CPUs. We can lift this
limitation by adding "gic-version=host" to it, which allows qemu to use the
maximum CPU number supported by the actual hardware.
I have sent you a new version in a separate email.
Best,
Lihao.
>> + ;;
>> qemu-system-ppc64)
>> echo -enable-kvm -M pseries -nodefaults
>> echo -device spapr-vscsi
>> @@ -254,7 +267,7 @@ specify_qemu_cpus () {
>> echo $2
>> else
>> case "$1" in
>> - qemu-system-x86_64|qemu-system-i386)
>> + qemu-system-x86_64|qemu-system-i386|qemu-system-aarch64)
>> echo $2 -smp $3
>> ;;
>> qemu-system-ppc64)
>> --
>> 2.7.4
>>
>
>
> .
>
