Release 4.14 arch/powerpc/kvm/powerpc.c

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2, as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright IBM Corp. 2007
 *
 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
 *          Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
 */

#include <linux/errno.h>
#include <linux/err.h>
#include <linux/kvm_host.h>
#include <linux/vmalloc.h>
#include <linux/hrtimer.h>
#include <linux/sched/signal.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/file.h>
#include <linux/module.h>
#include <linux/irqbypass.h>
#include <linux/kvm_irqfd.h>
#include <asm/cputable.h>
#include <linux/uaccess.h>
#include <asm/kvm_ppc.h>
#include <asm/tlbflush.h>
#include <asm/cputhreads.h>
#include <asm/irqflags.h>
#include <asm/iommu.h>
#include <asm/switch_to.h>
#include <asm/xive.h>

#include "timing.h"
#include "irq.h"
#include "../mm/mmu_decl.h"


#define CREATE_TRACE_POINTS
#include "trace.h"


struct kvmppc_ops *kvmppc_hv_ops;

EXPORT_SYMBOL_GPL(kvmppc_hv_ops);

struct kvmppc_ops *kvmppc_pr_ops;

EXPORT_SYMBOL_GPL(kvmppc_pr_ops);




int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
{
	return !!(v->arch.pending_exceptions) || kvm_request_pending(v);
}

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bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu)
{
	return false;
}

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int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
{
	return 1;
}

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/*
 * Common checks before entering the guest world.  Call with interrupts
 * disabled.
 *
 * returns:
 *
 * == 1 if we're ready to go into guest state
 * <= 0 if we need to go back to the host with return value
 */


int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
{
	int r;

	WARN_ON(irqs_disabled());
	hard_irq_disable();

	while (true) {
		if (need_resched()) {
			local_irq_enable();
			cond_resched();
			hard_irq_disable();
			continue;
		}

		if (signal_pending(current)) {
			kvmppc_account_exit(vcpu, SIGNAL_EXITS);
			vcpu->run->exit_reason = KVM_EXIT_INTR;
			r = -EINTR;
			break;
		}

		vcpu->mode = IN_GUEST_MODE;

		/*
                 * Reading vcpu->requests must happen after setting vcpu->mode,
                 * so we don't miss a request because the requester sees
                 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
                 * before next entering the guest (and thus doesn't IPI).
                 * This also orders the write to mode from any reads
                 * to the page tables done while the VCPU is running.
                 * Please see the comment in kvm_flush_remote_tlbs.
                 */
		smp_mb();

		if (kvm_request_pending(vcpu)) {
			/* Make sure we process requests preemptable */
			local_irq_enable();
			trace_kvm_check_requests(vcpu);
			r = kvmppc_core_check_requests(vcpu);
			hard_irq_disable();
			if (r > 0)
				continue;
			break;
		}

		if (kvmppc_core_prepare_to_enter(vcpu)) {
			/* interrupts got enabled in between, so we
                           are back at square 1 */
			continue;
		}

		guest_enter_irqoff();
		return 1;
	}

	/* return to host */
	local_irq_enable();
	return r;
}
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EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter);

#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)


static void kvmppc_swab_shared(struct kvm_vcpu *vcpu)
{
	struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared;
	int i;

	shared->sprg0 = swab64(shared->sprg0);
	shared->sprg1 = swab64(shared->sprg1);
	shared->sprg2 = swab64(shared->sprg2);
	shared->sprg3 = swab64(shared->sprg3);
	shared->srr0 = swab64(shared->srr0);
	shared->srr1 = swab64(shared->srr1);
	shared->dar = swab64(shared->dar);
	shared->msr = swab64(shared->msr);
	shared->dsisr = swab32(shared->dsisr);
	shared->int_pending = swab32(shared->int_pending);
	for (i = 0; i < ARRAY_SIZE(shared->sr); i++)
		shared->sr[i] = swab32(shared->sr[i]);
}
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#endif



int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
{
	int nr = kvmppc_get_gpr(vcpu, 11);
	int r;
	unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
	unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
	unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
	unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
	unsigned long r2 = 0;

	if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
		/* 32 bit mode */
		param1 &= 0xffffffff;
		param2 &= 0xffffffff;
		param3 &= 0xffffffff;
		param4 &= 0xffffffff;
	}

	switch (nr) {
	case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE):
	{
#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
		/* Book3S can be little endian, find it out here */
		int shared_big_endian = true;
		if (vcpu->arch.intr_msr & MSR_LE)
			shared_big_endian = false;
		if (shared_big_endian != vcpu->arch.shared_big_endian)
			kvmppc_swab_shared(vcpu);
		vcpu->arch.shared_big_endian = shared_big_endian;
#endif

		if (!(param2 & MAGIC_PAGE_FLAG_NOT_MAPPED_NX)) {
			/*
                         * Older versions of the Linux magic page code had
                         * a bug where they would map their trampoline code
                         * NX. If that's the case, remove !PR NX capability.
                         */
			vcpu->arch.disable_kernel_nx = true;
			kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
		}

		vcpu->arch.magic_page_pa = param1 & ~0xfffULL;
		vcpu->arch.magic_page_ea = param2 & ~0xfffULL;

#ifdef CONFIG_PPC_64K_PAGES
		/*
                 * Make sure our 4k magic page is in the same window of a 64k
                 * page within the guest and within the host's page.
                 */
		if ((vcpu->arch.magic_page_pa & 0xf000) !=
		    ((ulong)vcpu->arch.shared & 0xf000)) {
			void *old_shared = vcpu->arch.shared;
			ulong shared = (ulong)vcpu->arch.shared;
			void *new_shared;

			shared &= PAGE_MASK;
			shared |= vcpu->arch.magic_page_pa & 0xf000;
			new_shared = (void*)shared;
			memcpy(new_shared, old_shared, 0x1000);
			vcpu->arch.shared = new_shared;
		}
#endif

		r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;

		r = EV_SUCCESS;
		break;
	}
	case KVM_HCALL_TOKEN(KVM_HC_FEATURES):
		r = EV_SUCCESS;
#if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
		r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
#endif

		/* Second return value is in r4 */
		break;
	case EV_HCALL_TOKEN(EV_IDLE):
		r = EV_SUCCESS;
		kvm_vcpu_block(vcpu);
		kvm_clear_request(KVM_REQ_UNHALT, vcpu);
		break;
	default:
		r = EV_UNIMPLEMENTED;
		break;
	}

	kvmppc_set_gpr(vcpu, 4, r2);

	return r;
}
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EXPORT_SYMBOL_GPL(kvmppc_kvm_pv);



int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
{
	int r = false;

	/* We have to know what CPU to virtualize */
	if (!vcpu->arch.pvr)
		goto out;

	/* PAPR only works with book3s_64 */
	if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
		goto out;

	/* HV KVM can only do PAPR mode for now */
	if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm))
		goto out;

#ifdef CONFIG_KVM_BOOKE_HV
	if (!cpu_has_feature(CPU_FTR_EMB_HV))
		goto out;
#endif

	r = true;

out:
	vcpu->arch.sane = r;
	return r ? 0 : -EINVAL;
}
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EXPORT_SYMBOL_GPL(kvmppc_sanity_check);



int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
	enum emulation_result er;
	int r;

	er = kvmppc_emulate_loadstore(vcpu);
	switch (er) {
	case EMULATE_DONE:
		/* Future optimization: only reload non-volatiles if they were
                 * actually modified. */
		r = RESUME_GUEST_NV;
		break;
	case EMULATE_AGAIN:
		r = RESUME_GUEST;
		break;
	case EMULATE_DO_MMIO:
		run->exit_reason = KVM_EXIT_MMIO;
		/* We must reload nonvolatiles because "update" load/store
                 * instructions modify register state. */
		/* Future optimization: only reload non-volatiles if they were
                 * actually modified. */
		r = RESUME_HOST_NV;
		break;
	case EMULATE_FAIL:
	{
		u32 last_inst;

		kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
		/* XXX Deliver Program interrupt to guest. */
		pr_emerg("%s: emulation failed (%08x)\n", __func__, last_inst);
		r = RESUME_HOST;
		break;
	}
	default:
		WARN_ON(1);
		r = RESUME_GUEST;
	}

	return r;
}
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EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio);



int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
	      bool data)
{
	ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM & PAGE_MASK;
	struct kvmppc_pte pte;
	int r;

	vcpu->stat.st++;

	r = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST,
			 XLATE_WRITE, &pte);
	if (r < 0)
		return r;

	*eaddr = pte.raddr;

	if (!pte.may_write)
		return -EPERM;

	/* Magic page override */
	if (kvmppc_supports_magic_page(vcpu) && mp_pa &&
	    ((pte.raddr & KVM_PAM & PAGE_MASK) == mp_pa) &&
	    !(kvmppc_get_msr(vcpu) & MSR_PR)) {
		void *magic = vcpu->arch.shared;
		magic += pte.eaddr & 0xfff;
		memcpy(magic, ptr, size);
		return EMULATE_DONE;
	}

	if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
		return EMULATE_DO_MMIO;

	return EMULATE_DONE;
}
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EXPORT_SYMBOL_GPL(kvmppc_st);



int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
		      bool data)
{
	ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM & PAGE_MASK;
	struct kvmppc_pte pte;
	int rc;

	vcpu->stat.ld++;

	rc = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST,
			  XLATE_READ, &pte);
	if (rc)
		return rc;

	*eaddr = pte.raddr;

	if (!pte.may_read)
		return -EPERM;

	if (!data && !pte.may_execute)
		return -ENOEXEC;

	/* Magic page override */
	if (kvmppc_supports_magic_page(vcpu) && mp_pa &&
	    ((pte.raddr & KVM_PAM & PAGE_MASK) == mp_pa) &&
	    !(kvmppc_get_msr(vcpu) & MSR_PR)) {
		void *magic = vcpu->arch.shared;
		magic += pte.eaddr & 0xfff;
		memcpy(ptr, magic, size);
		return EMULATE_DONE;
	}

	if (kvm_read_guest(vcpu->kvm, pte.raddr, ptr, size))
		return EMULATE_DO_MMIO;

	return EMULATE_DONE;
}
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EXPORT_SYMBOL_GPL(kvmppc_ld);



int kvm_arch_hardware_enable(void)
{
	return 0;
}

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int kvm_arch_hardware_setup(void)
{
	return 0;
}

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void kvm_arch_check_processor_compat(void *rtn)
{
	*(int *)rtn = kvmppc_core_check_processor_compat();
}

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int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
{
	struct kvmppc_ops *kvm_ops = NULL;
	/*
         * if we have both HV and PR enabled, default is HV
         */
	if (type == 0) {
		if (kvmppc_hv_ops)
			kvm_ops = kvmppc_hv_ops;
		else
			kvm_ops = kvmppc_pr_ops;
		if (!kvm_ops)
			goto err_out;
	} else	if (type == KVM_VM_PPC_HV) {
		if (!kvmppc_hv_ops)
			goto err_out;
		kvm_ops = kvmppc_hv_ops;
	} else if (type == KVM_VM_PPC_PR) {
		if (!kvmppc_pr_ops)
			goto err_out;
		kvm_ops = kvmppc_pr_ops;
	} else
		goto err_out;

	if (kvm_ops->owner && !try_module_get(kvm_ops->owner))
		return -ENOENT;

	kvm->arch.kvm_ops = kvm_ops;
	return kvmppc_core_init_vm(kvm);
err_out:
	return -EINVAL;
}

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bool kvm_arch_has_vcpu_debugfs(void)
{
	return false;
}

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int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu)
{
	return 0;
}

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void kvm_arch_destroy_vm(struct kvm *kvm)
{
	unsigned int i;
	struct kvm_vcpu *vcpu;

#ifdef CONFIG_KVM_XICS
	/*
         * We call kick_all_cpus_sync() to ensure that all
         * CPUs have executed any pending IPIs before we
         * continue and free VCPUs structures below.
         */
	if (is_kvmppc_hv_enabled(kvm))
		kick_all_cpus_sync();
#endif

	kvm_for_each_vcpu(i, vcpu, kvm)
		kvm_arch_vcpu_free(vcpu);

	mutex_lock(&kvm->lock);
	for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
		kvm->vcpus[i] = NULL;

	atomic_set(&kvm->online_vcpus, 0);

	kvmppc_core_destroy_vm(kvm);

	mutex_unlock(&kvm->lock);

	/* drop the module reference */
	module_put(kvm->arch.kvm_ops->owner);
}

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int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
{
	int r;
	/* Assume we're using HV mode when the HV module is loaded */
	int hv_enabled = kvmppc_hv_ops ? 1 : 0;

	if (kvm) {
		/*
                 * Hooray - we know which VM type we're running on. Depend on
                 * that rather than the guess above.
                 */
		hv_enabled = is_kvmppc_hv_enabled(kvm);
	}

	switch (ext) {
#ifdef CONFIG_BOOKE
	case KVM_CAP_PPC_BOOKE_SREGS:
	case KVM_CAP_PPC_BOOKE_WATCHDOG:
	case KVM_CAP_PPC_EPR:
#else
	case KVM_CAP_PPC_SEGSTATE:
	case KVM_CAP_PPC_HIOR:
	case KVM_CAP_PPC_PAPR:
#endif
	case KVM_CAP_PPC_UNSET_IRQ:
	case KVM_CAP_PPC_IRQ_LEVEL:
	case KVM_CAP_ENABLE_CAP:
	case KVM_CAP_ENABLE_CAP_VM:
	case KVM_CAP_ONE_REG:
	case KVM_CAP_IOEVENTFD:
	case KVM_CAP_DEVICE_CTRL:
	case KVM_CAP_IMMEDIATE_EXIT:
		r = 1;
		break;
	case KVM_CAP_PPC_PAIRED_SINGLES:
	case KVM_CAP_PPC_OSI:
	case KVM_CAP_PPC_GET_PVINFO:
#if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
	case KVM_CAP_SW_TLB:
#endif
		/* We support this only for PR */
		r = !hv_enabled;
		break;
#ifdef CONFIG_KVM_MPIC
	case KVM_CAP_IRQ_MPIC:
		r = 1;
		break;
#endif

#ifdef CONFIG_PPC_BOOK3S_64
	case KVM_CAP_SPAPR_TCE:
	case KVM_CAP_SPAPR_TCE_64:
		/* fallthrough */
	case KVM_CAP_SPAPR_TCE_VFIO:
	case KVM_CAP_PPC_RTAS:
	case KVM_CAP_PPC_FIXUP_HCALL:
	case KVM_CAP_PPC_ENABLE_HCALL:
#ifdef CONFIG_KVM_XICS
	case KVM_CAP_IRQ_XICS:
#endif
		r = 1;
		break;

	case KVM_CAP_PPC_ALLOC_HTAB:
		r = hv_enabled;
		break;
#endif /* CONFIG_PPC_BOOK3S_64 */
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
	case KVM_CAP_PPC_SMT:
		r = 0;
		if (kvm) {
			if (kvm->arch.emul_smt_mode > 1)
				r = kvm->arch.emul_smt_mode;
			else
				r = kvm->arch.smt_mode;
		} else if (hv_enabled) {
			if (cpu_has_feature(CPU_FTR_ARCH_300))
				r = 1;
			else
				r = threads_per_subcore;
		}
		break;
	case KVM_CAP_PPC_SMT_POSSIBLE:
		r = 1;
		if (hv_enabled) {
			if (!cpu_has_feature(CPU_FTR_ARCH_300))
				r = ((threads_per_subcore << 1) - 1);
			else
				/* P9 can emulate dbells, so allow any mode */
				r = 8 | 4 | 2 | 1;
		}
		break;
	case KVM_CAP_PPC_RMA:
		r = 0;
		break;
	case KVM_CAP_PPC_HWRNG:
		r = kvmppc_hwrng_present();
		break;
	case KVM_CAP_PPC_MMU_RADIX:
		r = !!(hv_enabled && radix_enabled());
		break;
	case KVM_CAP_PPC_MMU_HASH_V3:
		r = !!(hv_enabled && !radix_enabled() &&
		       cpu_has_feature(CPU_FTR_ARCH_300));
		break;
#endif
	case KVM_CAP_SYNC_MMU:
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
		r = hv_enabled;
#elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
		r = 1;
#else
		r = 0;
#endif
		break;
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
	case KVM_CAP_PPC_HTAB_FD:
		r = hv_enabled;
		break;
#endif
	case KVM_CAP_NR_VCPUS:
		/*
                 * Recommending a number of CPUs is somewhat arbitrary; we
                 * return the number of present CPUs for -HV (since a host
                 * will have secondary threads "offline"), and for other KVM
                 * implementations just count online CPUs.
                 */
		if (hv_enabled)
			r = num_present_cpus();
		else
			r = num_online_cpus();
		break;
	case KVM_CAP_NR_MEMSLOTS:
		r = KVM_USER_MEM_SLOTS;
		break;
	case KVM_CAP_MAX_VCPUS:
		r = KVM_MAX_VCPUS;
		break;
#ifdef CONFIG_PPC_BOOK3S_64
	case KVM_CAP_PPC_GET_SMMU_INFO:
		r = 1;
		break;
	case KVM_CAP_SPAPR_MULTITCE:
		r = 1;
		break;
	case KVM_CAP_SPAPR_RESIZE_HPT:
		/* Disable this on POWER9 until code handles new HPTE format */
		r = !!hv_enabled && !cpu_has_feature(CPU_FTR_ARCH_300);
		break;
#endif
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
	case KVM_CAP_PPC_FWNMI:
		r = hv_enabled;
		break;
#endif
	case KVM_CAP_PPC_HTM:
		r = cpu_has_feature(CPU_FTR_TM_COMP) && hv_enabled;
		break;
	default:
		r = 0;
		break;
	}
	return r;

}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Paul Mackerras
195
38.24%
16
26.67%
Alexander Graf
78
15.29%
18
30.00%
Aneesh Kumar K.V
38
7.45%
2
3.33%
David Gibson
30
5.88%
3
5.00%
Scott Wood
30
5.88%
5
8.33%
Hollis Blanchard
26
5.10%
1
1.67%
Matt Evans
23
4.51%
1
1.67%
Benjamin Herrenschmidt
19
3.73%
2
3.33%
Alexey Kardashevskiy
15
2.94%
3
5.00%
Aravinda Prasad
13
2.55%
1
1.67%
Sam Bobroff
12
2.35%
1
1.67%
Michael Ellerman
11
2.16%
2
3.33%
Nikunj A. Dadhania
8
1.57%
1
1.67%
Laurent Vivier
5
0.98%
1
1.67%
Bharat Bhushan
3
0.59%
1
1.67%
Paolo Bonzini
3
0.59%
1
1.67%
Greg Kurz
1
0.20%
1
1.67%
Total
510
100.00%
60
100.00%



long kvm_arch_dev_ioctl(struct file *filp,
                        unsigned int ioctl, unsigned long arg)
{
	return -EINVAL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hollis Blanchard
22
100.00%
1
100.00%
Total
22
100.00%
1
100.00%



void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
			   struct kvm_memory_slot *dont)
{
	kvmppc_core_free_memslot(kvm, free, dont);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Takuya Yoshikawa
19
65.52%
2
50.00%
Aneesh Kumar K.V
7
24.14%
1
25.00%
Paul Mackerras
3
10.34%
1
25.00%
Total
29
100.00%
4
100.00%



int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
			    unsigned long npages)
{
	return kvmppc_core_create_memslot(kvm, slot, npages);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Takuya Yoshikawa
18
62.07%
2
50.00%
Aneesh Kumar K.V
7
24.14%
1
25.00%
Paul Mackerras
4
13.79%
1
25.00%
Total
29
100.00%
4
100.00%



int kvm_arch_prepare_memory_region(struct kvm *kvm,
				   struct kvm_memory_slot *memslot,
				   const struct kvm_userspace_memory_region *mem,
				   enum kvm_mr_change change)
{
	return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hollis Blanchard
16
45.71%
1
16.67%
Paul Mackerras
8
22.86%
2
33.33%
Marcelo Tosatti
6
17.14%
1
16.67%
Takuya Yoshikawa
4
11.43%
1
16.67%
Paolo Bonzini
1
2.86%
1
16.67%
Total
35
100.00%
6
100.00%



void kvm_arch_commit_memory_region(struct kvm *kvm,
				   const struct kvm_userspace_memory_region *mem,
				   const struct kvm_memory_slot *old,
				   const struct kvm_memory_slot *new,
				   enum kvm_mr_change change)
{
	kvmppc_core_commit_memory_region(kvm, mem, old, new);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Marcelo Tosatti
19
44.19%
1
16.67%
Paul Mackerras
9
20.93%
2
33.33%
Paolo Bonzini
9
20.93%
2
33.33%
Takuya Yoshikawa
6
13.95%
1
16.67%
Total
43
100.00%
6
100.00%



void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
				   struct kvm_memory_slot *slot)
{
	kvmppc_core_flush_memslot(kvm, slot);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Marcelo Tosatti
13
59.09%
1
50.00%
Paul Mackerras
9
40.91%
1
50.00%
Total
22
100.00%
2
100.00%



struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
{
	struct kvm_vcpu *vcpu;
	vcpu = kvmppc_core_vcpu_create(kvm, id);
	if (!IS_ERR(vcpu)) {
		vcpu->arch.wqp = &vcpu->wq;
		kvmppc_create_vcpu_debugfs(vcpu, id);
	}
	return vcpu;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hollis Blanchard
40
65.57%
3
60.00%
Paul Mackerras
11
18.03%
1
20.00%
Matt Evans
10
16.39%
1
20.00%
Total
61
100.00%
5
100.00%



void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
{
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Marcelo Tosatti
7
77.78%
1
50.00%
Dominik Dingel
2
22.22%
1
50.00%
Total
9
100.00%
2
100.00%



void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
{
	/* Make sure we're not using the vcpu anymore */
	hrtimer_cancel(&vcpu->arch.dec_timer);

	kvmppc_remove_vcpu_debugfs(vcpu);

	switch (vcpu->arch.irq_type) {
	case KVMPPC_IRQ_MPIC:
		kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
		break;
	case KVMPPC_IRQ_XICS:
		if (xive_enabled())
			kvmppc_xive_cleanup_vcpu(vcpu);
		else
			kvmppc_xics_free_icp(vcpu);
		break;
	}

	kvmppc_core_vcpu_free(vcpu);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Scott Wood
25
32.89%
1
14.29%
Benjamin Herrenschmidt
20
26.32%
2
28.57%
Hollis Blanchard
20
26.32%
3
42.86%
Alexander Graf
11
14.47%
1
14.29%
Total
76
100.00%
7
100.00%



void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
{
	kvm_arch_vcpu_free(vcpu);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hollis Blanchard
15
100.00%
1
100.00%
Total
15
100.00%
1
100.00%



int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
{
	return kvmppc_core_pending_dec(vcpu);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hollis Blanchard
16
100.00%
2
100.00%
Total
16
100.00%
2
100.00%



static enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
{
	struct kvm_vcpu *vcpu;

	vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
	kvmppc_decrementer_func(vcpu);

	return HRTIMER_NORESTART;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexander Graf
37
94.87%
1
33.33%
Thomas Huth
1
2.56%
1
33.33%
Mihai Caraman
1
2.56%
1
33.33%
Total
39
100.00%
3
100.00%



int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
{
	int ret;

	hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
	vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
	vcpu->arch.dec_expires = ~(u64)0;

#ifdef CONFIG_KVM_EXIT_TIMING
	mutex_init(&vcpu->arch.exit_timing_lock);
#endif
	ret = kvmppc_subarch_vcpu_init(vcpu);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Bharat Bhushan
26
35.14%
2
40.00%
Hollis Blanchard
20
27.03%
1
20.00%
Alexander Graf
16
21.62%
1
20.00%
Paul Mackerras
12
16.22%
1
20.00%
Total
74
100.00%
5
100.00%



void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
{
	kvmppc_mmu_destroy(vcpu);
	kvmppc_subarch_vcpu_uninit(vcpu);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hollis Blanchard
15
75.00%
3
75.00%
Bharat Bhushan
5
25.00%
1
25.00%
Total
20
100.00%
4
100.00%



void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
{
#ifdef CONFIG_BOOKE
	/*
         * vrsave (formerly usprg0) isn't used by Linux, but may
         * be used by the guest.
         *
         * On non-booke this is associated with Altivec and
         * is handled by code in book3s.c.
         */
	mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
#endif
	kvmppc_core_vcpu_load(vcpu, cpu);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hollis Blanchard
20
54.05%
4
80.00%
Scott Wood
17
45.95%
1
20.00%
Total
37
100.00%
5
100.00%



void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
{
	kvmppc_core_vcpu_put(vcpu);
#ifdef CONFIG_BOOKE
	vcpu