Re: [kvm-unit-tests PATCH v2 4/5] lib: s390x: functions for machine models

[Janosch Frank <frankja@linux.ibm.com>]

On 3/31/22 18:04, Claudio Imbrenda wrote:
> * move existing macros for machine models to hardware.h
> * add machine_is_* functions
> 
> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>

Reviewed-by: Janosch Frank <frankja@linux.ibm.com>

> ---
>   lib/s390x/asm/arch_def.h |  3 ---
>   lib/s390x/hardware.h     | 10 ++++++++++
>   s390x/uv-host.c          |  4 ++--
>   3 files changed, 12 insertions(+), 5 deletions(-)
> 
> diff --git a/lib/s390x/asm/arch_def.h b/lib/s390x/asm/arch_def.h
> index 40626d72..8d860ccf 100644
> --- a/lib/s390x/asm/arch_def.h
> +++ b/lib/s390x/asm/arch_def.h
> @@ -219,9 +219,6 @@ static inline unsigned short stap(void)
>   	return cpu_address;
>   }
>   
> -#define MACHINE_Z15A	0x8561
> -#define MACHINE_Z15B	0x8562
> -
>   static inline uint16_t get_machine_id(void)
>   {
>   	uint64_t cpuid;
> diff --git a/lib/s390x/hardware.h b/lib/s390x/hardware.h
> index e5910ea5..af20be18 100644
> --- a/lib/s390x/hardware.h
> +++ b/lib/s390x/hardware.h
> @@ -13,6 +13,9 @@
>   #define _S390X_HARDWARE_H_
>   #include <asm/arch_def.h>
>   
> +#define MACHINE_Z15	0x8561
> +#define MACHINE_Z15T02	0x8562
> +
>   enum s390_host {
>   	HOST_IS_UNKNOWN,
>   	HOST_IS_LPAR,
> @@ -37,4 +40,11 @@ static inline bool host_is_lpar(void)
>   	return detect_host() == HOST_IS_LPAR;
>   }
>   
> +static inline bool machine_is_z15(void)
> +{
> +	uint16_t machine = get_machine_id();
> +
> +	return machine == MACHINE_Z15 || machine == MACHINE_Z15T02;
> +}
> +
>   #endif  /* _S390X_HARDWARE_H_ */
> diff --git a/s390x/uv-host.c b/s390x/uv-host.c
> index de2e4850..d3018e3c 100644
> --- a/s390x/uv-host.c
> +++ b/s390x/uv-host.c
> @@ -9,6 +9,7 @@
>    */
>   
>   #include <libcflat.h>
> +#include <hardware.h>
>   #include <alloc.h>
>   #include <vmalloc.h>
>   #include <sclp.h>
> @@ -111,7 +112,6 @@ static void test_config_destroy(void)
>   static void test_cpu_destroy(void)
>   {
>   	int rc;
> -	uint16_t machineid = get_machine_id();
>   	struct uv_cb_nodata uvcb = {
>   		.header.len = sizeof(uvcb),
>   		.header.cmd = UVC_CMD_DESTROY_SEC_CPU,
> @@ -126,7 +126,7 @@ static void test_cpu_destroy(void)
>   	       "hdr invalid length");
>   	uvcb.header.len += 8;
>   
> -	if (machineid != MACHINE_Z15A && machineid != MACHINE_Z15B) {
> +	if (!machine_is_z15()) {
>   		uvcb.handle += 1;
>   		rc = uv_call(0, (uint64_t)&uvcb);
>   		report(rc == 1 && uvcb.header.rc == UVC_RC_INV_CHANDLE, "invalid handle");