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Add helpers for enabling kvm capabilities and convert the existing

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s390x and ppc users to use them.
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Merge remote-tracking branch 'remotes/cohuck/tags/kvm_cap_helpers' into staging

Add helpers for enabling kvm capabilities and convert the existing
s390x and ppc users to use them.

# gpg: Signature made Wed 30 Apr 2014 14:48:45 BST using RSA key ID C6F02FAF
# gpg: Can't check signature: public key not found

* remotes/cohuck/tags/kvm_cap_helpers:
  ppc: use kvm_vcpu_enable_cap()
  s390x: use kvm_vcpu_enable_cap()
  kvm: add kvm_{vm,vcpu}_enable_cap

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2014-05-01 17:32:25 +01:00
commit c090c10dc4
5 changed files with 39 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
hw/intc/openpic_kvm.c
View File

@ -234,13 +234,9 @@ static void kvm_openpic_realize(DeviceState *dev, Error **errp)
int kvm_openpic_connect_vcpu(DeviceState *d, CPUState *cs)
{
KVMOpenPICState *opp = KVM_OPENPIC(d);
struct kvm_enable_cap encap = {};
encap.cap = KVM_CAP_IRQ_MPIC;
encap.args[0] = opp->fd;
encap.args[1] = kvm_arch_vcpu_id(cs);
return kvm_vcpu_ioctl(cs, KVM_ENABLE_CAP, &encap);
return kvm_vcpu_enable_cap(cs, KVM_CAP_IRQ_MPIC, 0, opp->fd,
kvm_arch_vcpu_id(cs));
}
static Property kvm_openpic_properties[] = {

8
hw/intc/xics_kvm.c
View File

@ -331,15 +331,11 @@ static void xics_kvm_cpu_setup(XICSState *icp, PowerPCCPU *cpu)
if (icpkvm->kernel_xics_fd != -1) {
int ret;
struct kvm_enable_cap xics_enable_cap = {
.cap = KVM_CAP_IRQ_XICS,
.flags = 0,
.args = {icpkvm->kernel_xics_fd, kvm_arch_vcpu_id(cs), 0, 0},
};
ss->cs = cs;
ret = kvm_vcpu_ioctl(ss->cs, KVM_ENABLE_CAP, &xics_enable_cap);
ret = kvm_vcpu_enable_cap(cs, KVM_CAP_IRQ_XICS, 0,
icpkvm->kernel_xics_fd, kvm_arch_vcpu_id(cs));
if (ret < 0) {
error_report("Unable to connect CPU%ld to kernel XICS: %s",
kvm_arch_vcpu_id(cs), strerror(errno));

30
include/sysemu/kvm.h
View File

@ -294,6 +294,36 @@ bool kvm_arch_stop_on_emulation_error(CPUState *cpu);
int kvm_check_extension(KVMState *s, unsigned int extension);
#define kvm_vm_enable_cap(s, capability, cap_flags, ...) \
({ \
struct kvm_enable_cap cap = { \
.cap = capability, \
.flags = cap_flags, \
}; \
uint64_t args_tmp[] = { __VA_ARGS__ }; \
int i; \
for (i = 0; i < ARRAY_SIZE(args_tmp) && \
i < ARRAY_SIZE(cap.args); i++) { \
cap.args[i] = args_tmp[i]; \
} \
kvm_vm_ioctl(s, KVM_ENABLE_CAP, &cap); \
})
#define kvm_vcpu_enable_cap(cpu, capability, cap_flags, ...) \
({ \
struct kvm_enable_cap cap = { \
.cap = capability, \
.flags = cap_flags, \
}; \
uint64_t args_tmp[] = { __VA_ARGS__ }; \
int i; \
for (i = 0; i < ARRAY_SIZE(args_tmp) && \
i < ARRAY_SIZE(cap.args); i++) { \
cap.args[i] = args_tmp[i]; \
} \
kvm_vcpu_ioctl(cpu, KVM_ENABLE_CAP, &cap); \
})
uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
uint32_t index, int reg);

21
target-ppc/kvm.c
View File

@ -151,7 +151,6 @@ static int kvm_booke206_tlb_init(PowerPCCPU *cpu)
CPUState *cs = CPU(cpu);
struct kvm_book3e_206_tlb_params params = {};
struct kvm_config_tlb cfg = {};
struct kvm_enable_cap encap = {};
unsigned int entries = 0;
int ret, i;
@ -178,10 +177,7 @@ static int kvm_booke206_tlb_init(PowerPCCPU *cpu)
cfg.params = (uintptr_t)&params;
cfg.mmu_type = KVM_MMU_FSL_BOOKE_NOHV;
encap.cap = KVM_CAP_SW_TLB;
encap.args[0] = (uintptr_t)&cfg;
ret = kvm_vcpu_ioctl(cs, KVM_ENABLE_CAP, &encap);
ret = kvm_vcpu_enable_cap(cs, KVM_CAP_SW_TLB, 0, (uintptr_t)&cfg);
if (ret < 0) {
fprintf(stderr, "%s: couldn't enable KVM_CAP_SW_TLB: %s\n",
__func__, strerror(-ret));
@ -1292,7 +1288,6 @@ int kvmppc_set_tcr(PowerPCCPU *cpu)
int kvmppc_booke_watchdog_enable(PowerPCCPU *cpu)
{
CPUState *cs = CPU(cpu);
struct kvm_enable_cap encap = {};
int ret;
if (!kvm_enabled()) {
@ -1304,8 +1299,7 @@ int kvmppc_booke_watchdog_enable(PowerPCCPU *cpu)
return -1;
}
encap.cap = KVM_CAP_PPC_BOOKE_WATCHDOG;
ret = kvm_vcpu_ioctl(cs, KVM_ENABLE_CAP, &encap);
ret = kvm_vcpu_enable_cap(cs, KVM_CAP_PPC_BOOKE_WATCHDOG, 0);
if (ret < 0) {
fprintf(stderr, "%s: couldn't enable KVM_CAP_PPC_BOOKE_WATCHDOG: %s\n",
__func__, strerror(-ret));
@ -1505,12 +1499,9 @@ int kvmppc_get_hypercall(CPUPPCState *env, uint8_t *buf, int buf_len)
void kvmppc_set_papr(PowerPCCPU *cpu)
{
CPUState *cs = CPU(cpu);
struct kvm_enable_cap cap = {};
int ret;
cap.cap = KVM_CAP_PPC_PAPR;
ret = kvm_vcpu_ioctl(cs, KVM_ENABLE_CAP, &cap);
ret = kvm_vcpu_enable_cap(cs, KVM_CAP_PPC_PAPR, 0);
if (ret) {
cpu_abort(cs, "This KVM version does not support PAPR\n");
}
@ -1523,13 +1514,9 @@ void kvmppc_set_papr(PowerPCCPU *cpu)
void kvmppc_set_mpic_proxy(PowerPCCPU *cpu, int mpic_proxy)
{
CPUState *cs = CPU(cpu);
struct kvm_enable_cap cap = {};
int ret;
cap.cap = KVM_CAP_PPC_EPR;
cap.args[0] = mpic_proxy;
ret = kvm_vcpu_ioctl(cs, KVM_ENABLE_CAP, &cap);
ret = kvm_vcpu_enable_cap(cs, KVM_CAP_PPC_EPR, 0, mpic_proxy);
if (ret && mpic_proxy) {
cpu_abort(cs, "This KVM version does not support EPR\n");
}

4
target-s390x/kvm.c
View File

@ -929,12 +929,10 @@ void kvm_s390_crw_mchk(S390CPU *cpu)
void kvm_s390_enable_css_support(S390CPU *cpu)
{
struct kvm_enable_cap cap = {};
int r;
/* Activate host kernel channel subsystem support. */
cap.cap = KVM_CAP_S390_CSS_SUPPORT;
r = kvm_vcpu_ioctl(CPU(cpu), KVM_ENABLE_CAP, &cap);
r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
assert(r == 0);
}