On Tue, Jan 28, 2020 at 11:34:58AM +0100, Eric Auger wrote:
> This test maps LPIs (populates the device table, the collection table,
> interrupt translation tables, configuration table), migrates and make
> sure the translation is correct on the destination.
>
> Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
> ---
> arm/gic.c | 59 ++++++++++++++++++++++++++++++++++++----
> arm/unittests.cfg | 8 ++++++
> lib/arm/asm/gic-v3-its.h | 2 ++
> lib/arm/gic-v3-its.c | 22 +++++++++++++++
> 4 files changed, 85 insertions(+), 6 deletions(-)
>
> diff --git a/arm/gic.c b/arm/gic.c
> index 50104b1..fa8626a 100644
> --- a/arm/gic.c
> +++ b/arm/gic.c
> @@ -593,6 +593,7 @@ static void gic_test_mmio(void)
>
> static void test_its_introspection(void) {}
> static void test_its_trigger(void) {}
> +static void test_its_migration(void) {}
>
> #else /* __arch64__ */
>
> @@ -665,13 +666,19 @@ static bool its_prerequisites(int nb_cpus)
> return false;
> }
>
> -static void test_its_trigger(void)
> +/*
> + * Setup the configuration for those mappings:
> + * dev_id=2 event=20 -> vcpu 3, intid=8195
> + * dev_id=7 event=255 -> vcpu 2, intid=8196
> + * LPIs ready to hit
> + */
> +static int its_setup1(void)
> {
> struct its_collection *col3, *col2;
> struct its_device *dev2, *dev7;
>
> if (its_prerequisites(4))
> - return;
> + return -1;
Why not make its_setup1 a bool? Where true means success and false mean
failure?
>
> dev2 = its_create_device(2 /* dev id */, 8 /* nb_ites */);
> dev7 = its_create_device(7 /* dev id */, 8 /* nb_ites */);
> @@ -685,14 +692,10 @@ static void test_its_trigger(void)
> its_send_invall(col2);
> its_send_invall(col3);
>
> - report_prefix_push("int");
> /*
> * dev=2, eventid=20 -> lpi= 8195, col=3
> * dev=7, eventid=255 -> lpi= 8196, col=2
> - * Trigger dev2, eventid=20 and dev7, eventid=255
> - * Check both LPIs hit
> */
> -
> its_send_mapd(dev2, true);
> its_send_mapd(dev7, true);
>
> @@ -703,6 +706,23 @@ static void test_its_trigger(void)
> 20 /* event id */, col3);
> its_send_mapti(dev7, 8196 /* lpi id */,
> 255 /* event id */, col2);
> + return 0;
> +}
> +
> +static void test_its_trigger(void)
> +{
> + struct its_collection *col3, *col2;
> + struct its_device *dev2, *dev7;
> +
> + if (its_setup1())
> + return;
> +
> + col3 = its_get_collection(3);
> + col2 = its_get_collection(2);
> + dev2 = its_get_device(2);
> + dev7 = its_get_device(7);
> +
> + report_prefix_push("int");
>
> lpi_stats_expect(3, 8195);
> its_send_int(dev2, 20);
> @@ -763,6 +783,29 @@ static void test_its_trigger(void)
> check_lpi_stats();
> report_prefix_pop();
> }
> +
> +static void test_its_migration(void)
> +{
> + struct its_device *dev2, *dev7;
> +
> + if (its_setup1())
> + return;
> +
> + dev2 = its_get_device(2);
> + dev7 = its_get_device(7);
> +
> + puts("Now migrate the VM, then press a key to continue...\n");
> + (void)getchar();
> + report(true, "Migration complete");
This seems more like a report_info place. If migration fails and
we don't complete we'll never get the report FAIL anyway.
> +
> + lpi_stats_expect(3, 8195);
> + its_send_int(dev2, 20);
> + check_lpi_stats();
> +
> + lpi_stats_expect(2, 8196);
> + its_send_int(dev7, 255);
> + check_lpi_stats();
> +}
> #endif
>
> int main(int argc, char **argv)
> @@ -800,6 +843,10 @@ int main(int argc, char **argv)
> report_prefix_push(argv[1]);
> test_its_trigger();
> report_prefix_pop();
> + } else if (!strcmp(argv[1], "its-migration")) {
> + report_prefix_push(argv[1]);
> + test_its_migration();
> + report_prefix_pop();
> } else if (strcmp(argv[1], "its-introspection") == 0) {
> report_prefix_push(argv[1]);
> test_its_introspection();
> diff --git a/arm/unittests.cfg b/arm/unittests.cfg
> index bfafec5..8b8ec79 100644
> --- a/arm/unittests.cfg
> +++ b/arm/unittests.cfg
> @@ -136,6 +136,14 @@ extra_params = -machine gic-version=3 -append 'its-trigger'
> groups = its
> arch = arm64
>
> +[its-migration]
> +file = gic.flat
> +smp = $MAX_SMP
> +accel = kvm
> +extra_params = -machine gic-version=3 -append 'its-migration'
> +groups = its migration
> +arch = arm64
> +
> # Test PSCI emulation
> [psci]
> file = psci.flat
> diff --git a/lib/arm/asm/gic-v3-its.h b/lib/arm/asm/gic-v3-its.h
> index 0e5c5b6..febc2b2 100644
> --- a/lib/arm/asm/gic-v3-its.h
> +++ b/lib/arm/asm/gic-v3-its.h
> @@ -151,6 +151,8 @@ extern void its_send_invall(struct its_collection *col);
> extern void its_send_movi(struct its_device *dev,
> struct its_collection *col, u32 id);
> extern void its_send_sync(struct its_collection *col);
> +extern struct its_device *its_get_device(u32 id);
> +extern struct its_collection *its_get_collection(u32 id);
>
> #define ITS_FLAGS_CMDQ_NEEDS_FLUSHING (1ULL << 0)
> #define ITS_FLAGS_WORKAROUND_CAVIUM_22375 (1ULL << 1)
> diff --git a/lib/arm/gic-v3-its.c b/lib/arm/gic-v3-its.c
> index c2dcd01..099940e 100644
> --- a/lib/arm/gic-v3-its.c
> +++ b/lib/arm/gic-v3-its.c
> @@ -219,3 +219,25 @@ struct its_collection *its_create_collection(u32 col_id, u32 pe)
> its_data.nr_collections++;
> return new;
> }
> +
> +struct its_device *its_get_device(u32 id)
> +{
> + int i;
> +
> + for (i = 0; i < GITS_MAX_DEVICES; i++) {
> + if (its_data.devices[i].device_id == id)
> + return &its_data.devices[i];
> + }
> + return NULL;
> +}
> +
> +struct its_collection *its_get_collection(u32 id)
> +{
> + int i;
> +
> + for (i = 0; i < GITS_MAX_COLLECTIONS; i++) {
> + if (its_data.collections[i].col_id == id)
> + return &its_data.collections[i];
> + }
> + return NULL;
> +}
The callers aren't checking for NULL. Should we assert here
or in the caller?
Thanks,
drew
> --
> 2.20.1
>
