Commit 68f9f708 authored by Suraj Jitindar Singh's avatar Suraj Jitindar Singh Committed by David Gibson
Browse files

target/ppc/spapr: Enable H_PAGE_INIT in-kernel handling 



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: default avatarSuraj Jitindar Singh <sjitindarsingh@gmail.com>
Message-Id: <20190306060608.19935-1-sjitindarsingh@gmail.com>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent e075623a

hw/ppc/spapr.c

+3 −0
Original line number Diff line number Diff line
@@ -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 */

target/ppc/kvm.c

+5 −0
Original line number Diff line number Diff line
@@ -2044,6 +2044,11 @@ 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);

target/ppc/kvm_ppc.h

+5 −0
Original line number Diff line number Diff line
@@ -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)

{

}