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

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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>
Message-Id: <20190306060608.19935-1-sjitindarsingh@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Suraj Jitindar Singh 2019-03-06 17:06:08 +11:00 committed by David Gibson
parent e075623aa5
commit 68f9f70841
3 changed files with 13 additions and 0 deletions
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3
hw/ppc/spapr.c
View File

@ -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 */

5
target/ppc/kvm.c
View File

@ -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);

5
target/ppc/kvm_ppc.h
View File

@ -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)
{
}