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OpenCloudOS-Kernel
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Merge branch 'topic/ppc-kvm' into next 

Bring in some more KVM commits from our KVM topic branch.
This commit is contained in:
Michael Ellerman 2021-12-15 11:29:53 +11:00
parent b149d5d45a 63fa47ba88
commit 708da3ff1d
3 changed files with 13 additions and 15 deletions
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13
arch/powerpc/kvm/book3s_hv.c
View File

@ -4442,6 +4442,7 @@ static int kvmppc_run_vcpu(struct kvm_vcpu *vcpu)
int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu, u64 time_limit,
unsigned long lpcr)
{
struct rcuwait *wait = kvm_arch_vcpu_get_wait(vcpu);
struct kvm_run *run = vcpu->run;
int trap, r, pcpu;
int srcu_idx;
@ -4588,7 +4589,7 @@ int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu, u64 time_limit,
if (is_kvmppc_resume_guest(r) && !kvmppc_vcpu_check_block(vcpu)) {
kvmppc_set_timer(vcpu);
prepare_to_rcuwait(&vcpu->wait);
prepare_to_rcuwait(wait);
for (;;) {
set_current_state(TASK_INTERRUPTIBLE);
if (signal_pending(current)) {
@ -4605,7 +4606,7 @@ int kvmhv_run_single_vcpu(struct kvm_vcpu *vcpu, u64 time_limit,
schedule();
trace_kvmppc_vcore_blocked(vc, 1);
}
finish_rcuwait(&vcpu->wait);
finish_rcuwait(wait);
}
vcpu->arch.ceded = 0;
@ -4872,8 +4873,12 @@ static int kvmppc_core_prepare_memory_region_hv(struct kvm *kvm,
unsigned long npages = mem->memory_size >> PAGE_SHIFT;
if (change == KVM_MR_CREATE) {
slot->arch.rmap = vzalloc(array_size(npages,
sizeof(*slot->arch.rmap)));
unsigned long size = array_size(npages, sizeof(*slot->arch.rmap));
if ((size >> PAGE_SHIFT) > totalram_pages())
return -ENOMEM;
slot->arch.rmap = vzalloc(size);
if (!slot->arch.rmap)
return -ENOMEM;
}

2
arch/powerpc/kvm/book3s_hv_nested.c
View File

@ -580,7 +580,7 @@ long kvmhv_copy_tofrom_guest_nested(struct kvm_vcpu *vcpu)
if (eaddr & (0xFFFUL << 52))
return H_PARAMETER;
buf = kzalloc(n, GFP_KERNEL);
buf = kzalloc(n, GFP_KERNEL | __GFP_NOWARN);
if (!buf)
return H_NO_MEM;

13
arch/powerpc/kvm/book3s_hv_p9_entry.c
View File

@ -768,7 +768,6 @@ int kvmhv_vcpu_entry_p9(struct kvm_vcpu *vcpu, u64 time_limit, unsigned long lpc
s64 hdec, dec;
u64 purr, spurr;
u64 *exsave;
bool ri_set;
int trap;
unsigned long msr;
unsigned long host_hfscr;
@ -968,18 +967,12 @@ tm_return_to_guest:
/* 0x2 bit for HSRR is only used by PR and P7/8 HV paths, clear it */
trap = local_paca->kvm_hstate.scratch0 & ~0x2;
/* HSRR interrupts leave MSR[RI] unchanged, SRR interrupts clear it. */
ri_set = false;
if (likely(trap > BOOK3S_INTERRUPT_MACHINE_CHECK)) {
if (trap != BOOK3S_INTERRUPT_SYSCALL &&
(vcpu->arch.shregs.msr & MSR_RI))
ri_set = true;
if (likely(trap > BOOK3S_INTERRUPT_MACHINE_CHECK))
exsave = local_paca->exgen;
} else if (trap == BOOK3S_INTERRUPT_SYSTEM_RESET) {
else if (trap == BOOK3S_INTERRUPT_SYSTEM_RESET)
exsave = local_paca->exnmi;
} else { /* trap == 0x200 */
else /* trap == 0x200 */
exsave = local_paca->exmc;
}
vcpu->arch.regs.gpr[1] = local_paca->kvm_hstate.scratch1;
vcpu->arch.regs.gpr[3] = local_paca->kvm_hstate.scratch2;