On 06.02.2018 12:21, Christian Borntraeger wrote:
> instead of having huge jump tables for function selection,
> lets use normal switch/case statements for the instruction
> handlers in intercept.c We can now also get rid of
> intercept_handler_t.
>
> bloat-o-meter output:
> add/remove: 0/1 grow/shrink: 1/0 up/down: 280/-2048 (-1768)
> Function old new delta
> kvm_handle_sie_intercept 1530 1810 +280
> instruction_handlers 2048 - -2048
> Total: Before=5227, After=3459, chg -33.82%
>
> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> ---
> arch/s390/kvm/intercept.c | 54 ++++++++++++++++++++++++-----------------------
> arch/s390/kvm/kvm-s390.h | 2 --
> 2 files changed, 28 insertions(+), 28 deletions(-)
>
> diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
> index 9c7d70715862..047e711d1fd1 100644
> --- a/arch/s390/kvm/intercept.c
> +++ b/arch/s390/kvm/intercept.c
> @@ -22,22 +22,6 @@
> #include "trace.h"
> #include "trace-s390.h"
>
> -
> -static const intercept_handler_t instruction_handlers[256] = {
> - [0x01] = kvm_s390_handle_01,
> - [0x82] = kvm_s390_handle_lpsw,
> - [0x83] = kvm_s390_handle_diag,
> - [0xaa] = kvm_s390_handle_aa,
> - [0xae] = kvm_s390_handle_sigp,
> - [0xb2] = kvm_s390_handle_b2,
> - [0xb6] = kvm_s390_handle_stctl,
> - [0xb7] = kvm_s390_handle_lctl,
> - [0xb9] = kvm_s390_handle_b9,
> - [0xe3] = kvm_s390_handle_e3,
> - [0xe5] = kvm_s390_handle_e5,
> - [0xeb] = kvm_s390_handle_eb,
> -};
> -
> u8 kvm_s390_get_ilen(struct kvm_vcpu *vcpu)
> {
> struct kvm_s390_sie_block *sie_block = vcpu->arch.sie_block;
> @@ -129,16 +113,34 @@ static int handle_validity(struct kvm_vcpu *vcpu)
>
> static int handle_instruction(struct kvm_vcpu *vcpu)
> {
> - intercept_handler_t handler;
> -
> - vcpu->stat.exit_instruction++;
> - trace_kvm_s390_intercept_instruction(vcpu,
> - vcpu->arch.sie_block->ipa,
> - vcpu->arch.sie_block->ipb);
With that fixed
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
--
Thanks,
David / dhildenb
--
To unsubscribe from this list: send the line "unsubscribe linux-s390" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
