Re: [kvm-unit-tests PATCH 6/6] s390x: Add UV host test

[Claudio Imbrenda <imbrenda@linux.ibm.com>]

On Tue, 16 Mar 2021 09:16:54 +0000
Janosch Frank <frankja@linux.ibm.com> wrote:

> Let's also test the UV host interfaces.
> 
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

the test is ok as is, but I do have a lot of ideas on how to
improve/extend it further. Once this is merged (and once I have some
time) I will send a few patches. 

> ---
>  s390x/Makefile  |   1 +
>  s390x/uv-host.c | 513
> ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 514
> insertions(+) create mode 100644 s390x/uv-host.c
> 
> diff --git a/s390x/Makefile b/s390x/Makefile
> index bbf177fa..8de926ab 100644
> --- a/s390x/Makefile
> +++ b/s390x/Makefile
> @@ -21,6 +21,7 @@ tests += $(TEST_DIR)/css.elf
>  tests += $(TEST_DIR)/uv-guest.elf
>  tests += $(TEST_DIR)/sie.elf
>  tests += $(TEST_DIR)/mvpg.elf
> +tests += $(TEST_DIR)/uv-host.elf
>  
>  tests_binary = $(patsubst %.elf,%.bin,$(tests))
>  ifneq ($(HOST_KEY_DOCUMENT),)
> diff --git a/s390x/uv-host.c b/s390x/uv-host.c
> new file mode 100644
> index 00000000..746abd8e
> --- /dev/null
> +++ b/s390x/uv-host.c
> @@ -0,0 +1,513 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Guest Ultravisor Call tests
> + *
> + * Copyright (c) 2021 IBM Corp
> + *
> + * Authors:
> + *  Janosch Frank <frankja@linux.ibm.com>
> + */
> +
> +#include <libcflat.h>
> +#include <alloc.h>
> +#include <vmalloc.h>
> +#include <sclp.h>
> +#include <smp.h>
> +#include <asm/page.h>
> +#include <asm/sigp.h>
> +#include <asm/pgtable.h>
> +#include <asm/asm-offsets.h>
> +#include <asm/interrupt.h>
> +#include <asm/facility.h>
> +#include <asm/uv.h>
> +#include <asm-generic/barrier.h>
> +
> +static struct uv_cb_qui uvcb_qui;
> +static struct uv_cb_init uvcb_init;
> +static struct uv_cb_cgc uvcb_cgc;
> +static struct uv_cb_csc uvcb_csc;
> +
> +extern int diag308_load_reset(u64 code);
> +
> +struct cmd_list{
> +	const char *name;
> +	uint16_t cmd;
> +	uint16_t len;
> +};
> +
> +static void cpu_loop(void)
> +{
> +	for (;;) {}
> +}
> +
> +static struct cmd_list cmds[] = {
> +	{ "init", UVC_CMD_INIT_UV, sizeof(struct uv_cb_init) },
> +	{ "create conf", UVC_CMD_CREATE_SEC_CONF, sizeof(struct
> uv_cb_cgc) },
> +	{ "destroy conf", UVC_CMD_DESTROY_SEC_CONF, sizeof(struct
> uv_cb_nodata) },
> +	{ "create cpu", UVC_CMD_CREATE_SEC_CPU, sizeof(struct
> uv_cb_csc) },
> +	{ "destroy cpu", UVC_CMD_DESTROY_SEC_CPU, sizeof(struct
> uv_cb_nodata) },
> +	{ "conv to", UVC_CMD_CONV_TO_SEC_STOR, sizeof(struct
> uv_cb_cts) },
> +	{ "conv from", UVC_CMD_CONV_FROM_SEC_STOR, sizeof(struct
> uv_cb_cfs) },
> +	{ "set sec conf", UVC_CMD_SET_SEC_CONF_PARAMS, sizeof(struct
> uv_cb_ssc) },
> +	{ "unpack", UVC_CMD_UNPACK_IMG, sizeof(struct uv_cb_unp) },
> +	{ "verify", UVC_CMD_VERIFY_IMG, sizeof(struct uv_cb_nodata)
> },
> +	{ "cpu reset", UVC_CMD_CPU_RESET, sizeof(struct
> uv_cb_nodata) },
> +	{ "cpu initial reset", UVC_CMD_CPU_RESET_INITIAL,
> sizeof(struct uv_cb_nodata) },
> +	{ "conf clear reset", UVC_CMD_PERF_CONF_CLEAR_RESET,
> sizeof(struct uv_cb_nodata) },
> +	{ "cpu clear reset", UVC_CMD_CPU_RESET_CLEAR, sizeof(struct
> uv_cb_nodata) },
> +	{ "cpu set state", UVC_CMD_CPU_SET_STATE, sizeof(struct
> uv_cb_cpu_set_state) },
> +	{ "pin shared", UVC_CMD_PIN_PAGE_SHARED, sizeof(struct
> uv_cb_cfs) },
> +	{ "unpin shared", UVC_CMD_UNPIN_PAGE_SHARED, sizeof(struct
> uv_cb_cts) },
> +	{ NULL, 0, 0 },
> +};
> +
> +static void test_priv(void)
> +{
> +	struct uv_cb_header uvcb = {};
> +	uint16_t pgm;
> +	int i;
> +
> +	report_prefix_push("privileged");
> +	for (i = 0; cmds[i].name; i++) {
> +		expect_pgm_int();
> +		uvcb.cmd = cmds[i].cmd;
> +		uvcb.len = cmds[i].len;
> +		enter_pstate();
> +		uv_call(0, (uint64_t)&uvcb);
> +		pgm = clear_pgm_int();
> +		report(pgm == PGM_INT_CODE_PRIVILEGED_OPERATION,
> "%s", cmds[i].name);
> +	}
> +	report_prefix_pop();
> +}
> +
> +static void test_config_destroy(void)
> +{
> +	int rc;
> +	struct uv_cb_nodata uvcb = {
> +		.header.cmd = UVC_CMD_DESTROY_SEC_CONF,
> +		.header.len = sizeof(uvcb),
> +		.handle = uvcb_cgc.guest_handle,
> +	};
> +
> +	report_prefix_push("dsc");
> +	uvcb.header.len -= 8;
> +	rc = uv_call(0, (uint64_t)&uvcb);
> +	report(rc == 1 && uvcb.header.rc == UVC_RC_INV_LEN,
> +	       "hdr invalid length");
> +	uvcb.header.len += 8;
> +
> +	uvcb.handle += 1;
> +	rc = uv_call(0, (uint64_t)&uvcb);
> +	report(rc == 1 && uvcb.header.rc == UVC_RC_INV_GHANDLE,
> "invalid handle");
> +	uvcb.handle -= 1;
> +
> +	rc = uv_call(0, (uint64_t)&uvcb);
> +	report(rc == 0 && uvcb.header.rc == UVC_RC_EXECUTED,
> "success");
> +	report_prefix_pop();
> +}
> +
> +static void test_cpu_destroy(void)
> +{
> +	int rc;
> +	struct uv_cb_nodata uvcb = {
> +		.header.len = sizeof(uvcb),
> +		.header.cmd = UVC_CMD_DESTROY_SEC_CPU,
> +		.handle = uvcb_csc.cpu_handle,
> +	};
> +
> +	report_prefix_push("dcpu");
> +
> +	uvcb.header.len -= 8;
> +	rc = uv_call(0, (uint64_t)&uvcb);
> +	report(rc == 1 && uvcb.header.rc == UVC_RC_INV_LEN,
> +	       "hdr invalid length");
> +	uvcb.header.len += 8;
> +
> +	uvcb.handle += 1;
> +	rc = uv_call(0, (uint64_t)&uvcb);
> +	report(rc == 1 && uvcb.header.rc == UVC_RC_INV_CHANDLE,
> "invalid handle");
> +	uvcb.handle -= 1;
> +
> +	rc = uv_call(0, (uint64_t)&uvcb);
> +	report(rc == 0 && uvcb.header.rc == UVC_RC_EXECUTED,
> "success"); +
> +	report_prefix_pop();
> +}
> +
> +static void test_cpu_create(void)
> +{
> +	int rc;
> +	unsigned long tmp;
> +
> +	report_prefix_push("csc");
> +	uvcb_csc.header.len = sizeof(uvcb_csc);
> +	uvcb_csc.header.cmd = UVC_CMD_CREATE_SEC_CPU;
> +	uvcb_csc.guest_handle = uvcb_cgc.guest_handle;
> +	uvcb_csc.stor_origin = (unsigned long)memalign(PAGE_SIZE,
> uvcb_qui.cpu_stor_len);
> +	uvcb_csc.state_origin = (unsigned long)memalign(PAGE_SIZE,
> PAGE_SIZE); +
> +	uvcb_csc.header.len -= 8;
> +	rc = uv_call(0, (uint64_t)&uvcb_csc);
> +	report(uvcb_csc.header.rc == UVC_RC_INV_LEN && rc == 1 &&
> +	       !uvcb_csc.cpu_handle, "hdr invalid length");
> +	uvcb_csc.header.len += 8;
> +
> +	uvcb_csc.guest_handle += 1;
> +	rc = uv_call(0, (uint64_t)&uvcb_csc);
> +	report(uvcb_csc.header.rc == UVC_RC_INV_GHANDLE && rc == 1,
> +	       "invalid guest handle");
> +	uvcb_csc.guest_handle -= 1;
> +
> +	uvcb_csc.num = uvcb_qui.max_guest_cpus + 1;
> +	rc = uv_call(0, (uint64_t)&uvcb_csc);
> +	report(uvcb_csc.header.rc == 0x103 && rc == 1,
> +	       "invalid cpu #");
> +	uvcb_csc.num = 0;
> +
> +	tmp = uvcb_csc.stor_origin;
> +	uvcb_csc.stor_origin = get_max_ram_size() + PAGE_SIZE;
> +	rc = uv_call(0, (uint64_t)&uvcb_csc);
> +	report(uvcb_csc.header.rc == 0x105 && rc == 1,
> +	       "cpu stor inaccessible");
> +	uvcb_csc.stor_origin = tmp;
> +
> +	tmp = uvcb_csc.stor_origin;
> +	uvcb_csc.stor_origin = 0;
> +	rc = uv_call(0, (uint64_t)&uvcb_csc);
> +	report(uvcb_csc.header.rc == 0x106 && rc == 1,
> +	       "cpu stor in lowcore");
> +	uvcb_csc.stor_origin = tmp;
> +
> +	tmp = uvcb_csc.state_origin;
> +	uvcb_csc.state_origin = get_max_ram_size() + PAGE_SIZE;
> +	rc = uv_call(0, (uint64_t)&uvcb_csc);
> +	report(uvcb_csc.header.rc == 0x107 && rc == 1,
> +	       "SIE SD inaccessible");
> +	uvcb_csc.state_origin = tmp;
> +
> +	rc = uv_call(0, (uint64_t)&uvcb_csc);
> +	report(rc == 0 && uvcb_csc.header.rc == UVC_RC_EXECUTED &&
> +	       uvcb_csc.cpu_handle, "success");
> +
> +	tmp = uvcb_csc.stor_origin;
> +	uvcb_csc.stor_origin = (unsigned long)memalign(PAGE_SIZE,
> uvcb_qui.cpu_stor_len);
> +	rc = uv_call(0, (uint64_t)&uvcb_csc);
> +	report(rc == 1 && uvcb_csc.header.rc == 0x104, "already
> defined");
> +	uvcb_csc.stor_origin = tmp;
> +	report_prefix_pop();
> +}
> +
> +static void test_config_create(void)
> +{
> +	int rc;
> +	unsigned long vsize, tmp;
> +	static struct uv_cb_cgc uvcb;
> +
> +	uvcb_cgc.header.cmd = UVC_CMD_CREATE_SEC_CONF;
> +	uvcb_cgc.header.len = sizeof(uvcb_cgc);
> +	report_prefix_push("cgc");
> +
> +	uvcb_cgc.guest_stor_origin = 0;
> +	uvcb_cgc.guest_stor_len = 42 * (1UL << 20);
> +	vsize = uvcb_qui.conf_base_virt_stor_len +
> +		((uvcb_cgc.guest_stor_len / (1UL << 20)) *
> uvcb_qui.conf_virt_var_stor_len); +
> +	uvcb_cgc.conf_base_stor_origin =
> (uint64_t)memalign(PAGE_SIZE * 4, uvcb_qui.conf_base_phys_stor_len);
> +	uvcb_cgc.conf_var_stor_origin =
> (uint64_t)memalign(PAGE_SIZE, vsize);
> +	uvcb_cgc.guest_asce = (uint64_t)memalign(PAGE_SIZE, 4 *
> PAGE_SIZE) | ASCE_DT_SEGMENT | REGION_TABLE_LENGTH | ASCE_P;
> +	uvcb_cgc.guest_sca = (uint64_t)memalign(PAGE_SIZE * 4,
> PAGE_SIZE * 4); +
> +	uvcb_cgc.header.len -= 8;
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(uvcb_cgc.header.rc == UVC_RC_INV_LEN && rc == 1 &&
> +	       !uvcb_cgc.guest_handle, "hdr invalid length");
> +	uvcb_cgc.header.len += 8;
> +
> +	uvcb_cgc.guest_stor_origin = uvcb_qui.max_guest_stor_addr +
> (1UL << 20) * 2 + 1;
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(uvcb_cgc.header.rc == 0x101 && rc == 1,
> +	       "MSO > max guest addr");
> +	uvcb_cgc.guest_stor_origin = 0;
> +
> +	uvcb_cgc.guest_stor_origin = uvcb_qui.max_guest_stor_addr -
> (1UL << 20);
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(uvcb_cgc.header.rc == 0x102 && rc == 1,
> +	       "MSO + MSL > max guest addr");
> +	uvcb_cgc.guest_stor_origin = 0;
> +
> +	uvcb_cgc.guest_asce &= ~ASCE_P;
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(uvcb_cgc.header.rc == 0x105 && rc == 1,
> +	       "ASCE private bit missing");
> +	uvcb_cgc.guest_asce |= ASCE_P;
> +
> +	uvcb_cgc.guest_asce |= 0x20;
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(uvcb_cgc.header.rc == 0x105 && rc == 1,
> +	       "ASCE bit 58 set");
> +	uvcb_cgc.guest_asce &= ~0x20;
> +
> +	tmp = uvcb_cgc.conf_base_stor_origin;
> +	uvcb_cgc.conf_base_stor_origin = get_max_ram_size() + 8;
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(uvcb_cgc.header.rc == 0x108 && rc == 1,
> +	       "base storage origin > available memory");
> +	uvcb_cgc.conf_base_stor_origin = tmp;
> +
> +	tmp = uvcb_cgc.conf_base_stor_origin;
> +	uvcb_cgc.conf_base_stor_origin = 0x1000;
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(uvcb_cgc.header.rc == 0x109 && rc == 1,
> +	       "base storage origin contains lowcore");
> +	uvcb_cgc.conf_base_stor_origin = tmp;
> +
> +	if (smp_query_num_cpus() == 1) {
> +		sigp_retry(1, SIGP_SET_PREFIX,
> +			   uvcb_cgc.conf_var_stor_origin +
> PAGE_SIZE, NULL);
> +		rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +		report(uvcb_cgc.header.rc == 0x10e && rc == 1 &&
> +		       !uvcb_cgc.guest_handle, "variable storage
> area contains lowcore");
> +		sigp_retry(1, SIGP_SET_PREFIX, 0x0, NULL);
> +	}
> +
> +	tmp = uvcb_cgc.guest_sca;
> +	uvcb_cgc.guest_sca = 0;
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(uvcb_cgc.header.rc == 0x10c && rc == 1,
> +	       "sca == 0");
> +	uvcb_cgc.guest_sca = tmp;
> +
> +	tmp = uvcb_cgc.guest_sca;
> +	uvcb_cgc.guest_sca = get_max_ram_size() + + PAGE_SIZE * 4;
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(uvcb_cgc.header.rc == 0x10d && rc == 1,
> +	       "sca inaccessible");
> +	uvcb_cgc.guest_sca = tmp;
> +
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(rc == 0 && uvcb_cgc.header.rc == UVC_RC_EXECUTED,
> "successful"); +
> +	uvcb_cgc.header.rc = 0;
> +	uvcb_cgc.header.rrc = 0;
> +	tmp = uvcb_cgc.guest_handle;
> +	uvcb_cgc.guest_handle = 0;
> +	rc = uv_call(0, (uint64_t)&uvcb_cgc);
> +	report(uvcb_cgc.header.rc >= 0x100 && rc == 1, "reuse uvcb");
> +	uvcb_cgc.guest_handle = tmp;
> +
> +	/* Copy over most data from uvcb_cgc, so we have the ASCE
> that was used. */
> +	memcpy(&uvcb, &uvcb_cgc, sizeof(uvcb));
> +
> +	/* Reset the header and handle */
> +	uvcb.header.rc = 0;
> +	uvcb.header.rrc = 0;
> +	uvcb.guest_handle = 0;
> +
> +	/* Use new storage areas. */
> +	uvcb.conf_base_stor_origin = (uint64_t)memalign(PAGE_SIZE *
> 4, uvcb_qui.conf_base_phys_stor_len);
> +	uvcb.conf_var_stor_origin = (uint64_t)memalign(PAGE_SIZE,
> vsize); +
> +	rc = uv_call(0, (uint64_t)&uvcb);
> +	report(uvcb.header.rc >= 0x104 && rc == 1 &&
> !uvcb.guest_handle,
> +	       "reuse ASCE");
> +	free((void *)uvcb.conf_base_stor_origin);
> +	free((void *)uvcb.conf_var_stor_origin);
> +
> +
> +	/* Missing: 106, 10a, a0b */
> +	report_prefix_pop();
> +}
> +
> +static void test_init(void)
> +{
> +	int rc;
> +	uint64_t mem;
> +	struct psw psw;
> +
> +	/* Donated storage needs to be over 2GB */
> +	mem = (uint64_t)memalign(1UL << 31,
> uvcb_qui.uv_base_stor_len); +
> +	uvcb_init.header.len = sizeof(uvcb_init);
> +	uvcb_init.header.cmd = UVC_CMD_INIT_UV;
> +	uvcb_init.stor_origin = mem;
> +	uvcb_init.stor_len = uvcb_qui.uv_base_stor_len;
> +
> +	report_prefix_push("init");
> +	uvcb_init.header.len -= 8;
> +	rc = uv_call(0, (uint64_t)&uvcb_init);
> +	report(rc == 1 && uvcb_init.header.rc == UVC_RC_INV_LEN,
> +	       "hdr invalid length");
> +	uvcb_init.header.len += 8;
> +
> +	uvcb_init.stor_len -= 8;
> +	rc = uv_call(0, (uint64_t)&uvcb_init);
> +	report(rc == 1 && uvcb_init.header.rc == 0x103,
> +	       "storage invalid length");
> +	uvcb_init.stor_len += 8;
> +
> +	uvcb_init.stor_origin =  get_max_ram_size() + 8;
> +	rc = uv_call(0, (uint64_t)&uvcb_init);
> +	report(rc == 1 && uvcb_init.header.rc == 0x104,
> +	       "storage origin invalid");
> +	uvcb_init.stor_origin = mem;
> +
> +	uvcb_init.stor_origin = get_max_ram_size() - 8;
> +	rc = uv_call(0, (uint64_t)&uvcb_init);
> +	report(rc == 1 && uvcb_init.header.rc == 0x105,
> +	       "storage + length invalid");
> +	uvcb_init.stor_origin = mem;
> +
> +	uvcb_init.stor_origin = 1UL << 30;
> +	rc = uv_call(0, (uint64_t)&uvcb_init);
> +	report(rc == 1 && uvcb_init.header.rc == 0x108,
> +	       "storage below 2GB");
> +	uvcb_init.stor_origin = mem;
> +
> +	psw.mask = extract_psw_mask();
> +	psw.addr = (unsigned long)cpu_loop;
> +	smp_cpu_setup(1, psw);
> +	rc = uv_call(0, (uint64_t)&uvcb_init);
> +	report(rc == 1 && uvcb_init.header.rc == 0x102,
> +	       "too many running cpus");
> +	smp_cpu_stop(1);
> +
> +	rc = uv_call(0, (uint64_t)&uvcb_init);
> +	report(rc == 0 && uvcb_init.header.rc == UVC_RC_EXECUTED,
> "successful"); +
> +	mem = (uint64_t)memalign(1UL << 31,
> uvcb_qui.uv_base_stor_len);
> +	rc = uv_call(0, (uint64_t)&uvcb_init);
> +	report(rc == 1 && uvcb_init.header.rc == 0x101, "double
> init");
> +	free((void *)mem);
> +
> +	report_prefix_pop();
> +}
> +
> +static void test_query(void)
> +{
> +	uvcb_qui.header.cmd = UVC_CMD_QUI;
> +	uvcb_qui.header.len = sizeof(uvcb_qui);
> +	uint64_t *call_list = &uvcb_qui.inst_calls_list[0];
> +
> +	report_prefix_push("query");
> +	uvcb_qui.header.len = 0xa0;
> +	uv_call(0, (uint64_t)&uvcb_qui);
> +	report(uvcb_qui.header.rc == UVC_RC_INV_LEN, "length");
> +
> +	uvcb_qui.header.len = 0xa8;
> +	uv_call(0, (uint64_t)&uvcb_qui);
> +	report(uvcb_qui.header.rc == 0x100, "insf length");
> +
> +	uvcb_qui.header.len = sizeof(uvcb_qui);
> +	uv_call(0, (uint64_t)&uvcb_qui);
> +	report(uvcb_qui.header.rc == UVC_RC_EXECUTED, "successful
> query"); +
> +	report(test_bit_inv(BIT_UVC_CMD_QUI, call_list) &&
> +	       test_bit_inv(BIT_UVC_CMD_INIT_UV, call_list),
> +	       "query and init indicated");
> +
> +	report(test_bit_inv(BIT_UVC_CMD_CREATE_SEC_CONF, call_list)
> &&
> +	       test_bit_inv(BIT_UVC_CMD_DESTROY_SEC_CONF, call_list),
> +	       "create/destroy vm indicated");
> +
> +	report(test_bit_inv(BIT_UVC_CMD_CREATE_SEC_CPU, call_list) &&
> +	       test_bit_inv(BIT_UVC_CMD_DESTROY_SEC_CPU, call_list),
> +	       "create/destroy cpu indicated");
> +
> +	report(test_bit_inv(BIT_UVC_CMD_CONV_TO_SEC_STOR, call_list)
> &&
> +	       test_bit_inv(BIT_UVC_CMD_CONV_FROM_SEC_STOR,
> call_list),
> +	       "convert to/from secure storage indicated");
> +
> +	report(test_bit_inv(BIT_UVC_CMD_SET_SEC_PARMS, call_list) &&
> +	       test_bit_inv(BIT_UVC_CMD_UNPACK_IMG, call_list) &&
> +	       test_bit_inv(BIT_UVC_CMD_CPU_SET_STATE, call_list) &&
> +	       test_bit_inv(BIT_UVC_CMD_VERIFY_IMG, call_list),
> +	       "set sec parm, setcpu state, unpack and verify
> indicated"); +
> +	report(test_bit_inv(BIT_UVC_CMD_CPU_RESET, call_list) &&
> +	       test_bit_inv(BIT_UVC_CMD_CPU_RESET_INITIAL,
> call_list) &&
> +	       test_bit_inv(BIT_UVC_CMD_CPU_PERFORM_CLEAR_RESET,
> call_list),
> +	       "resets indicated");
> +
> +	report(test_bit_inv(BIT_UVC_CMD_PREPARE_CLEAR_RESET,
> call_list) &&
> +	       test_bit_inv(BIT_UVC_CMD_UNSHARE_ALL, call_list),
> +	       "prepare reset and unshare all indicated");
> +
> +	report(test_bit_inv(BIT_UVC_CMD_PIN_PAGE_SHARED, call_list)
> &&
> +	       test_bit_inv(BIT_UVC_CMD_UNPIN_PAGE_SHARED,
> call_list),
> +	       "(un)pin shared page indicated");
> +
> +	report(!test_bit_inv(BIT_UVC_CMD_SET_SHARED_ACCESS,
> call_list) &&
> +	       !test_bit_inv(BIT_UVC_CMD_REMOVE_SHARED_ACCESS,
> call_list),
> +	       "(un)share not indicated");
> +
> +	report_prefix_pop();
> +}
> +
> +static struct cmd_list invalid_cmds[] = {
> +	{ "bogus", 0x4242, sizeof(struct uv_cb_header) },
> +	{ "share", UVC_CMD_SET_SHARED_ACCESS, sizeof(struct
> uv_cb_share) },
> +	{ "unshare", UVC_CMD_REMOVE_SHARED_ACCESS, sizeof(struct
> uv_cb_share) },
> +	{ NULL, 0, 0 },
> +};
> +
> +static void test_invalid(void)
> +{
> +	struct uv_cb_header hdr = {};
> +	int i, cc;
> +
> +	report_prefix_push("invalid");
> +	for (i = 0; invalid_cmds[i].name; i++) {
> +		hdr.cmd = invalid_cmds[i].cmd;
> +		hdr.len = invalid_cmds[i].len;
> +		cc = uv_call(0, (uint64_t)&hdr);
> +		report(cc == 1 && hdr.rc == UVC_RC_INV_CMD, "%s",
> +		       invalid_cmds[i].name);
> +	}
> +	report_prefix_pop();
> +}
> +
> +static void test_clear(void)
> +{
> +	uint64_t *tmp = (void *)uvcb_init.stor_origin;
> +
> +	diag308_load_reset(1);
> +	sclp_console_setup();
> +	report(!*tmp, "memory cleared after reset 1");
> +}
> +
> +static void setup_vmem(void)
> +{
> +	uint64_t asce, mask;
> +
> +	setup_mmu(get_max_ram_size());
> +	asce = stctg(1);
> +	lctlg(13, asce);
> +	mask = extract_psw_mask() | 0x0000C00000000000UL;
> +	load_psw_mask(mask);
> +}
> +
> +int main(void)
> +{
> +	bool has_uvc = test_facility(158);
> +
> +	report_prefix_push("uvc");
> +	if (!has_uvc) {
> +		report_skip("Ultravisor call facility is not
> available");
> +		goto done;
> +	}
> +
> +	test_priv();
> +	test_invalid();
> +	test_query();
> +	test_init();
> +
> +	setup_vmem();
> +	test_config_create();
> +	test_cpu_create();
> +	test_cpu_destroy();
> +	test_config_destroy();
> +	test_clear();
> +
> +done:
> +	return report_summary();
> +}