Re: [kvm-unit-tests PATCH 4/4] lib: s390x: sie: Move sie function into library

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

On Thu, 29 Jul 2021 13:48:03 +0000
Janosch Frank <frankja@linux.ibm.com> wrote:

> Time to deduplicate more code.
> 
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>

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

> ---
>  lib/s390x/sie.c  | 13 +++++++++++++
>  lib/s390x/sie.h  |  1 +
>  s390x/mvpg-sie.c | 13 -------------
>  s390x/sie.c      | 17 -----------------
>  4 files changed, 14 insertions(+), 30 deletions(-)
> 
> diff --git a/lib/s390x/sie.c b/lib/s390x/sie.c
> index ec0c4867..d971e825 100644
> --- a/lib/s390x/sie.c
> +++ b/lib/s390x/sie.c
> @@ -43,6 +43,19 @@ void sie_handle_validity(struct vm *vm)
>  	validity_expected = false;
>  }
>  
> +void sie(struct vm *vm)
> +{
> +	/* Reset icptcode so we don't trip over it below */
> +	vm->sblk->icptcode = 0;
> +
> +	while (vm->sblk->icptcode == 0) {
> +		sie64a(vm->sblk, &vm->save_area);
> +		sie_handle_validity(vm);
> +	}
> +	vm->save_area.guest.grs[14] = vm->sblk->gg14;
> +	vm->save_area.guest.grs[15] = vm->sblk->gg15;
> +}
> +
>  /* Initializes the struct vm members like the SIE control block. */
>  void sie_guest_create(struct vm *vm, uint64_t guest_mem, uint64_t
> guest_mem_len) {
> diff --git a/lib/s390x/sie.h b/lib/s390x/sie.h
> index 946bd164..ca514ef3 100644
> --- a/lib/s390x/sie.h
> +++ b/lib/s390x/sie.h
> @@ -198,6 +198,7 @@ struct vm {
>  extern void sie_entry(void);
>  extern void sie_exit(void);
>  extern void sie64a(struct kvm_s390_sie_block *sblk, struct
> vm_save_area *save_area); +void sie(struct vm *vm);
>  void sie_expect_validity(void);
>  void sie_check_validity(uint16_t vir_exp);
>  void sie_handle_validity(struct vm *vm);
> diff --git a/s390x/mvpg-sie.c b/s390x/mvpg-sie.c
> index 71ae4f88..70d2fcfa 100644
> --- a/s390x/mvpg-sie.c
> +++ b/s390x/mvpg-sie.c
> @@ -32,19 +32,6 @@ extern const char
> _binary_s390x_snippets_c_mvpg_snippet_gbin_start[]; extern const char
> _binary_s390x_snippets_c_mvpg_snippet_gbin_end[]; int binary_size;
>  
> -static void sie(struct vm *vm)
> -{
> -	/* Reset icptcode so we don't trip over it below */
> -	vm->sblk->icptcode = 0;
> -
> -	while (vm->sblk->icptcode == 0) {
> -		sie64a(vm->sblk, &vm->save_area);
> -		sie_handle_validity(vm);
> -	}
> -	vm->save_area.guest.grs[14] = vm->sblk->gg14;
> -	vm->save_area.guest.grs[15] = vm->sblk->gg15;
> -}
> -
>  static void test_mvpg_pei(void)
>  {
>  	uint64_t **pei_dst = (uint64_t **)((uintptr_t) vm.sblk +
> 0xc0); diff --git a/s390x/sie.c b/s390x/sie.c
> index 9cb9b055..ed2c3263 100644
> --- a/s390x/sie.c
> +++ b/s390x/sie.c
> @@ -24,22 +24,6 @@ static u8 *guest;
>  static u8 *guest_instr;
>  static struct vm vm;
>  
> -
> -static void sie(struct vm *vm)
> -{
> -	while (vm->sblk->icptcode == 0) {
> -		sie64a(vm->sblk, &vm->save_area);
> -		sie_handle_validity(vm);
> -	}
> -	vm->save_area.guest.grs[14] = vm->sblk->gg14;
> -	vm->save_area.guest.grs[15] = vm->sblk->gg15;
> -}
> -
> -static void sblk_cleanup(struct vm *vm)
> -{
> -	vm->sblk->icptcode = 0;
> -}
> -
>  static void test_diag(u32 instr)
>  {
>  	vm.sblk->gpsw.addr = PAGE_SIZE * 2;
> @@ -51,7 +35,6 @@ static void test_diag(u32 instr)
>  	report(vm.sblk->icptcode == ICPT_INST &&
>  	       vm.sblk->ipa == instr >> 16 && vm.sblk->ipb == instr
> << 16, "Intercept data");
> -	sblk_cleanup(&vm);
>  }
>  
>  static struct {