From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/arch/powerpc/kvm/book3s_pr.c | 144 +++++++++++++++++++++++++-----------------------
1 files changed, 75 insertions(+), 69 deletions(-)
diff --git a/kernel/arch/powerpc/kvm/book3s_pr.c b/kernel/arch/powerpc/kvm/book3s_pr.c
index 7869112..b1fefa6 100644
--- a/kernel/arch/powerpc/kvm/book3s_pr.c
+++ b/kernel/arch/powerpc/kvm/book3s_pr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved.
*
@@ -13,10 +14,6 @@
*
* This file is derived from arch/powerpc/kvm/44x.c,
* by Hollis Blanchard <hollisb@us.ibm.com>.
- *
- * 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.
*/
#include <linux/kvm_host.h>
@@ -93,7 +90,43 @@
kvmppc_set_pc(vcpu, pc | SPLIT_HACK_OFFS);
}
-void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu);
+static void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
+{
+ if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
+ ulong pc = kvmppc_get_pc(vcpu);
+ ulong lr = kvmppc_get_lr(vcpu);
+ if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
+ kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
+ if ((lr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
+ kvmppc_set_lr(vcpu, lr & ~SPLIT_HACK_MASK);
+ vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
+ }
+}
+
+static void kvmppc_inject_interrupt_pr(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags)
+{
+ unsigned long msr, pc, new_msr, new_pc;
+
+ kvmppc_unfixup_split_real(vcpu);
+
+ msr = kvmppc_get_msr(vcpu);
+ pc = kvmppc_get_pc(vcpu);
+ new_msr = vcpu->arch.intr_msr;
+ new_pc = to_book3s(vcpu)->hior + vec;
+
+#ifdef CONFIG_PPC_BOOK3S_64
+ /* If transactional, change to suspend mode on IRQ delivery */
+ if (MSR_TM_TRANSACTIONAL(msr))
+ new_msr |= MSR_TS_S;
+ else
+ new_msr |= msr & MSR_TS_MASK;
+#endif
+
+ kvmppc_set_srr0(vcpu, pc);
+ kvmppc_set_srr1(vcpu, (msr & SRR1_MSR_BITS) | srr1_flags);
+ kvmppc_set_pc(vcpu, new_pc);
+ kvmppc_set_msr(vcpu, new_msr);
+}
static void kvmppc_core_vcpu_load_pr(struct kvm_vcpu *vcpu, int cpu)
{
@@ -536,7 +569,7 @@
#endif
}
-void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr)
+static void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr)
{
u32 host_pvr;
@@ -587,6 +620,7 @@
case PVR_POWER8:
case PVR_POWER8E:
case PVR_POWER8NVL:
+ case PVR_POWER9:
vcpu->arch.hflags |= BOOK3S_HFLAG_MULTI_PGSIZE |
BOOK3S_HFLAG_NEW_TLBIE;
break;
@@ -666,7 +700,7 @@
return kvm_is_visible_gfn(vcpu->kvm, gpa >> PAGE_SHIFT);
}
-int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu,
+static int kvmppc_handle_pagefault(struct kvm_vcpu *vcpu,
ulong eaddr, int vec)
{
bool data = (vec == BOOK3S_INTERRUPT_DATA_STORAGE);
@@ -706,7 +740,7 @@
(vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
((pte.raddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
pte.raddr &= ~SPLIT_HACK_MASK;
- /* fall through */
+ fallthrough;
case MSR_IR:
vcpu->arch.mmu.esid_to_vsid(vcpu, eaddr >> SID_SHIFT, &vsid);
@@ -761,7 +795,7 @@
/* The guest's PTE is not mapped yet. Map on the host */
if (kvmppc_mmu_map_page(vcpu, &pte, iswrite) == -EIO) {
/* Exit KVM if mapping failed */
- run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+ vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
return RESUME_HOST;
}
if (data)
@@ -774,7 +808,7 @@
vcpu->stat.mmio_exits++;
vcpu->arch.paddr_accessed = pte.raddr;
vcpu->arch.vaddr_accessed = pte.eaddr;
- r = kvmppc_emulate_mmio(run, vcpu);
+ r = kvmppc_emulate_mmio(vcpu);
if ( r == RESUME_HOST_NV )
r = RESUME_HOST;
}
@@ -958,7 +992,7 @@
enum emulation_result er = EMULATE_FAIL;
if (!(kvmppc_get_msr(vcpu) & MSR_PR))
- er = kvmppc_emulate_instruction(vcpu->run, vcpu);
+ er = kvmppc_emulate_instruction(vcpu);
if ((er != EMULATE_DONE) && (er != EMULATE_AGAIN)) {
/* Couldn't emulate, trigger interrupt in guest */
@@ -1055,8 +1089,7 @@
}
}
-static int kvmppc_exit_pr_progint(struct kvm_run *run, struct kvm_vcpu *vcpu,
- unsigned int exit_nr)
+static int kvmppc_exit_pr_progint(struct kvm_vcpu *vcpu, unsigned int exit_nr)
{
enum emulation_result er;
ulong flags;
@@ -1090,7 +1123,7 @@
}
vcpu->stat.emulated_inst_exits++;
- er = kvmppc_emulate_instruction(run, vcpu);
+ er = kvmppc_emulate_instruction(vcpu);
switch (er) {
case EMULATE_DONE:
r = RESUME_GUEST_NV;
@@ -1105,7 +1138,7 @@
r = RESUME_GUEST;
break;
case EMULATE_DO_MMIO:
- run->exit_reason = KVM_EXIT_MMIO;
+ vcpu->run->exit_reason = KVM_EXIT_MMIO;
r = RESUME_HOST_NV;
break;
case EMULATE_EXIT_USER:
@@ -1118,9 +1151,9 @@
return r;
}
-int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
- unsigned int exit_nr)
+int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
{
+ struct kvm_run *run = vcpu->run;
int r = RESUME_HOST;
int s;
@@ -1164,7 +1197,7 @@
/* only care about PTEG not found errors, but leave NX alone */
if (shadow_srr1 & 0x40000000) {
int idx = srcu_read_lock(&vcpu->kvm->srcu);
- r = kvmppc_handle_pagefault(run, vcpu, kvmppc_get_pc(vcpu), exit_nr);
+ r = kvmppc_handle_pagefault(vcpu, kvmppc_get_pc(vcpu), exit_nr);
srcu_read_unlock(&vcpu->kvm->srcu, idx);
vcpu->stat.sp_instruc++;
} else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
@@ -1214,7 +1247,7 @@
*/
if (fault_dsisr & (DSISR_NOHPTE | DSISR_PROTFAULT)) {
int idx = srcu_read_lock(&vcpu->kvm->srcu);
- r = kvmppc_handle_pagefault(run, vcpu, dar, exit_nr);
+ r = kvmppc_handle_pagefault(vcpu, dar, exit_nr);
srcu_read_unlock(&vcpu->kvm->srcu, idx);
} else {
kvmppc_core_queue_data_storage(vcpu, dar, fault_dsisr);
@@ -1246,7 +1279,6 @@
r = RESUME_GUEST;
break;
case BOOK3S_INTERRUPT_EXTERNAL:
- case BOOK3S_INTERRUPT_EXTERNAL_LEVEL:
case BOOK3S_INTERRUPT_EXTERNAL_HV:
case BOOK3S_INTERRUPT_H_VIRT:
vcpu->stat.ext_intr_exits++;
@@ -1259,7 +1291,7 @@
break;
case BOOK3S_INTERRUPT_PROGRAM:
case BOOK3S_INTERRUPT_H_EMUL_ASSIST:
- r = kvmppc_exit_pr_progint(run, vcpu, exit_nr);
+ r = kvmppc_exit_pr_progint(vcpu, exit_nr);
break;
case BOOK3S_INTERRUPT_SYSCALL:
{
@@ -1337,7 +1369,7 @@
emul = kvmppc_get_last_inst(vcpu, INST_GENERIC,
&last_inst);
if (emul == EMULATE_DONE)
- r = kvmppc_exit_pr_progint(run, vcpu, exit_nr);
+ r = kvmppc_exit_pr_progint(vcpu, exit_nr);
else
r = RESUME_GUEST;
@@ -1711,21 +1743,17 @@
return r;
}
-static struct kvm_vcpu *kvmppc_core_vcpu_create_pr(struct kvm *kvm,
- unsigned int id)
+static int kvmppc_core_vcpu_create_pr(struct kvm_vcpu *vcpu)
{
struct kvmppc_vcpu_book3s *vcpu_book3s;
- struct kvm_vcpu *vcpu;
- int err = -ENOMEM;
unsigned long p;
+ int err;
- vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
- if (!vcpu)
- goto out;
+ err = -ENOMEM;
vcpu_book3s = vzalloc(sizeof(struct kvmppc_vcpu_book3s));
if (!vcpu_book3s)
- goto free_vcpu;
+ goto out;
vcpu->arch.book3s = vcpu_book3s;
#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
@@ -1735,14 +1763,9 @@
goto free_vcpu3s;
#endif
- err = kvm_vcpu_init(vcpu, kvm, id);
- if (err)
- goto free_shadow_vcpu;
-
- err = -ENOMEM;
p = __get_free_page(GFP_KERNEL|__GFP_ZERO);
if (!p)
- goto uninit_vcpu;
+ goto free_shadow_vcpu;
vcpu->arch.shared = (void *)p;
#ifdef CONFIG_PPC_BOOK3S_64
/* Always start the shared struct in native endian mode */
@@ -1764,57 +1787,50 @@
#else
/* default to book3s_32 (750) */
vcpu->arch.pvr = 0x84202;
+ vcpu->arch.intr_msr = 0;
#endif
kvmppc_set_pvr_pr(vcpu, vcpu->arch.pvr);
vcpu->arch.slb_nr = 64;
vcpu->arch.shadow_msr = MSR_USER64 & ~MSR_LE;
- err = kvmppc_mmu_init(vcpu);
+ err = kvmppc_mmu_init_pr(vcpu);
if (err < 0)
goto free_shared_page;
- return vcpu;
+ return 0;
free_shared_page:
free_page((unsigned long)vcpu->arch.shared);
-uninit_vcpu:
- kvm_vcpu_uninit(vcpu);
free_shadow_vcpu:
#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
kfree(vcpu->arch.shadow_vcpu);
free_vcpu3s:
#endif
vfree(vcpu_book3s);
-free_vcpu:
- kmem_cache_free(kvm_vcpu_cache, vcpu);
out:
- return ERR_PTR(err);
+ return err;
}
static void kvmppc_core_vcpu_free_pr(struct kvm_vcpu *vcpu)
{
struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
+ kvmppc_mmu_destroy_pr(vcpu);
free_page((unsigned long)vcpu->arch.shared & PAGE_MASK);
- kvm_vcpu_uninit(vcpu);
#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
kfree(vcpu->arch.shadow_vcpu);
#endif
vfree(vcpu_book3s);
- kmem_cache_free(kvm_vcpu_cache, vcpu);
}
-static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
+static int kvmppc_vcpu_run_pr(struct kvm_vcpu *vcpu)
{
int ret;
-#ifdef CONFIG_ALTIVEC
- unsigned long uninitialized_var(vrsave);
-#endif
/* Check if we can run the vcpu at all */
if (!vcpu->arch.sane) {
- kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+ vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
ret = -EINVAL;
goto out;
}
@@ -1841,7 +1857,7 @@
kvmppc_fix_ee_before_entry();
- ret = __kvmppc_vcpu_run(kvm_run, vcpu);
+ ret = __kvmppc_vcpu_run(vcpu);
kvmppc_clear_debug(vcpu);
@@ -1865,7 +1881,6 @@
static int kvm_vm_ioctl_get_dirty_log_pr(struct kvm *kvm,
struct kvm_dirty_log *log)
{
- struct kvm_memslots *slots;
struct kvm_memory_slot *memslot;
struct kvm_vcpu *vcpu;
ulong ga, ga_end;
@@ -1875,15 +1890,12 @@
mutex_lock(&kvm->slots_lock);
- r = kvm_get_dirty_log(kvm, log, &is_dirty);
+ r = kvm_get_dirty_log(kvm, log, &is_dirty, &memslot);
if (r)
goto out;
/* If nothing is dirty, don't bother messing with page tables. */
if (is_dirty) {
- slots = kvm_memslots(kvm);
- memslot = id_to_memslot(slots, log->slot);
-
ga = memslot->base_gfn << PAGE_SHIFT;
ga_end = ga + (memslot->npages << PAGE_SHIFT);
@@ -1908,7 +1920,8 @@
static int kvmppc_core_prepare_memory_region_pr(struct kvm *kvm,
struct kvm_memory_slot *memslot,
- const struct kvm_userspace_memory_region *mem)
+ const struct kvm_userspace_memory_region *mem,
+ enum kvm_mr_change change)
{
return 0;
}
@@ -1916,23 +1929,16 @@
static void kvmppc_core_commit_memory_region_pr(struct kvm *kvm,
const struct kvm_userspace_memory_region *mem,
const struct kvm_memory_slot *old,
- const struct kvm_memory_slot *new)
+ const struct kvm_memory_slot *new,
+ enum kvm_mr_change change)
{
return;
}
-static void kvmppc_core_free_memslot_pr(struct kvm_memory_slot *free,
- struct kvm_memory_slot *dont)
+static void kvmppc_core_free_memslot_pr(struct kvm_memory_slot *slot)
{
return;
}
-
-static int kvmppc_core_create_memslot_pr(struct kvm_memory_slot *slot,
- unsigned long npages)
-{
- return 0;
-}
-
#ifdef CONFIG_PPC64
static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm,
@@ -1997,6 +2003,7 @@
{
/* We should not get called */
BUG();
+ return 0;
}
#endif /* CONFIG_PPC64 */
@@ -2062,6 +2069,7 @@
.set_one_reg = kvmppc_set_one_reg_pr,
.vcpu_load = kvmppc_core_vcpu_load_pr,
.vcpu_put = kvmppc_core_vcpu_put_pr,
+ .inject_interrupt = kvmppc_inject_interrupt_pr,
.set_msr = kvmppc_set_msr_pr,
.vcpu_run = kvmppc_vcpu_run_pr,
.vcpu_create = kvmppc_core_vcpu_create_pr,
@@ -2075,9 +2083,7 @@
.age_hva = kvm_age_hva_pr,
.test_age_hva = kvm_test_age_hva_pr,
.set_spte_hva = kvm_set_spte_hva_pr,
- .mmu_destroy = kvmppc_mmu_destroy_pr,
.free_memslot = kvmppc_core_free_memslot_pr,
- .create_memslot = kvmppc_core_create_memslot_pr,
.init_vm = kvmppc_core_init_vm_pr,
.destroy_vm = kvmppc_core_destroy_vm_pr,
.get_smmu_info = kvm_vm_ioctl_get_smmu_info_pr,
--
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