| Message ID | 20190306060608.19935-1-sjitindarsingh@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [QEMU-PPC] target/ppc/spapr: Enable H_PAGE_INIT in-kernel handling | expand |
On Wed, Mar 06, 2019 at 05:06:08PM +1100, Suraj Jitindar Singh wrote: > The H_CALL H_PAGE_INIT can be used to zero or copy a page of guest > memory. Enable the in-kernel H_PAGE_INIT handler. > > The in-kernel handler takes half the time to complete compared to > handling the H_CALL in userspace. > > Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com> Applied, thanks. > --- > hw/ppc/spapr.c | 3 +++ > target/ppc/kvm.c | 5 +++++ > target/ppc/kvm_ppc.h | 5 +++++ > 3 files changed, 13 insertions(+) > > diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c > index cf1ef9ebd4..8ce97ff1e7 100644 > --- a/hw/ppc/spapr.c > +++ b/hw/ppc/spapr.c > @@ -2822,6 +2822,9 @@ static void spapr_machine_init(MachineState *machine) > > /* H_CLEAR_MOD/_REF are mandatory in PAPR, but off by default */ > kvmppc_enable_clear_ref_mod_hcalls(); > + > + /* Enable H_PAGE_INIT */ > + kvmppc_enable_h_page_init(); > } > > /* allocate RAM */ > diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c > index 4e3f1e4b78..d0bfb076df 100644 > --- a/target/ppc/kvm.c > +++ b/target/ppc/kvm.c > @@ -2043,6 +2043,11 @@ void kvmppc_enable_clear_ref_mod_hcalls(void) > kvmppc_enable_hcall(kvm_state, H_CLEAR_MOD); > } > > +void kvmppc_enable_h_page_init(void) > +{ > + kvmppc_enable_hcall(kvm_state, H_PAGE_INIT); > +} > + > void kvmppc_set_papr(PowerPCCPU *cpu) > { > CPUState *cs = CPU(cpu); > diff --git a/target/ppc/kvm_ppc.h b/target/ppc/kvm_ppc.h > index 2937b36cae..2c2ea30e87 100644 > --- a/target/ppc/kvm_ppc.h > +++ b/target/ppc/kvm_ppc.h > @@ -23,6 +23,7 @@ int kvmppc_set_interrupt(PowerPCCPU *cpu, int irq, int level); > void kvmppc_enable_logical_ci_hcalls(void); > void kvmppc_enable_set_mode_hcall(void); > void kvmppc_enable_clear_ref_mod_hcalls(void); > +void kvmppc_enable_h_page_init(void); > void kvmppc_set_papr(PowerPCCPU *cpu); > int kvmppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr); > void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy); > @@ -138,6 +139,10 @@ static inline void kvmppc_enable_clear_ref_mod_hcalls(void) > { > } > > +static inline void kvmppc_enable_h_page_init(void) > +{ > +} > + > static inline void kvmppc_set_papr(PowerPCCPU *cpu) > { > }
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index cf1ef9ebd4..8ce97ff1e7 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -2822,6 +2822,9 @@ static void spapr_machine_init(MachineState *machine) /* H_CLEAR_MOD/_REF are mandatory in PAPR, but off by default */ kvmppc_enable_clear_ref_mod_hcalls(); + + /* Enable H_PAGE_INIT */ + kvmppc_enable_h_page_init(); } /* allocate RAM */ diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c index 4e3f1e4b78..d0bfb076df 100644 --- a/target/ppc/kvm.c +++ b/target/ppc/kvm.c @@ -2043,6 +2043,11 @@ void kvmppc_enable_clear_ref_mod_hcalls(void) kvmppc_enable_hcall(kvm_state, H_CLEAR_MOD); } +void kvmppc_enable_h_page_init(void) +{ + kvmppc_enable_hcall(kvm_state, H_PAGE_INIT); +} + void kvmppc_set_papr(PowerPCCPU *cpu) { CPUState *cs = CPU(cpu); diff --git a/target/ppc/kvm_ppc.h b/target/ppc/kvm_ppc.h index 2937b36cae..2c2ea30e87 100644 --- a/target/ppc/kvm_ppc.h +++ b/target/ppc/kvm_ppc.h @@ -23,6 +23,7 @@ int kvmppc_set_interrupt(PowerPCCPU *cpu, int irq, int level); void kvmppc_enable_logical_ci_hcalls(void); void kvmppc_enable_set_mode_hcall(void); void kvmppc_enable_clear_ref_mod_hcalls(void); +void kvmppc_enable_h_page_init(void); void kvmppc_set_papr(PowerPCCPU *cpu); int kvmppc_set_compat(PowerPCCPU *cpu, uint32_t compat_pvr); void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy); @@ -138,6 +139,10 @@ static inline void kvmppc_enable_clear_ref_mod_hcalls(void) { } +static inline void kvmppc_enable_h_page_init(void) +{ +} + static inline void kvmppc_set_papr(PowerPCCPU *cpu) { }
The H_CALL H_PAGE_INIT can be used to zero or copy a page of guest memory. Enable the in-kernel H_PAGE_INIT handler. The in-kernel handler takes half the time to complete compared to handling the H_CALL in userspace. Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com> --- hw/ppc/spapr.c | 3 +++ target/ppc/kvm.c | 5 +++++ target/ppc/kvm_ppc.h | 5 +++++ 3 files changed, 13 insertions(+)