From: David Gibson <david@gibson.dropbear.id.au>
To: paulus@samba.org, aik@ozlabs.ru, benh@kernel.crashing.org
Cc: bharata@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org,
David Gibson <david@gibson.dropbear.id.au>
Subject: [RFC 11/18] powerpc/kvm: Rename kvm_alloc_hpt() for clarity
Date: Thu, 3 Mar 2016 12:59:42 +1100 [thread overview]
Message-ID: <1456970389-28802-12-git-send-email-david@gibson.dropbear.id.au> (raw)
In-Reply-To: <1456970389-28802-1-git-send-email-david@gibson.dropbear.id.au>
The difference between kvm_alloc_hpt() and kvmppc_alloc_hpt() is not at
all obvious from the name. In practice kvmppc_alloc_hpt() allocates an HPT
by whatever means, and clals kvm_alloc_hpt() which will attempt to allocate
it with CMA only.
To make this less confusing, rename kvm_alloc_hpt() to kvm_alloc_hpt_cma().
Similarly, kvm_release_hpt() is renamed kvm_free_hpt_cma().
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
arch/powerpc/include/asm/kvm_ppc.h | 4 ++--
arch/powerpc/kvm/book3s_64_mmu_hv.c | 8 ++++----
arch/powerpc/kvm/book3s_hv_builtin.c | 8 ++++----
3 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index 2241d53..f25947a 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -170,8 +170,8 @@ extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
unsigned long ioba, unsigned long tce);
extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
unsigned long ioba);
-extern struct page *kvm_alloc_hpt(unsigned long nr_pages);
-extern void kvm_release_hpt(struct page *page, unsigned long nr_pages);
+extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
+extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
extern int kvmppc_core_init_vm(struct kvm *kvm);
extern void kvmppc_core_destroy_vm(struct kvm *kvm);
extern void kvmppc_core_free_memslot(struct kvm *kvm,
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index fb37290..157285b0 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -62,7 +62,7 @@ long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp)
}
kvm->arch.hpt_cma_alloc = 0;
- page = kvm_alloc_hpt(1ul << (order - PAGE_SHIFT));
+ page = kvm_alloc_hpt_cma(1ul << (order - PAGE_SHIFT));
if (page) {
hpt = (unsigned long)pfn_to_kaddr(page_to_pfn(page));
memset((void *)hpt, 0, (1ul << order));
@@ -106,7 +106,7 @@ long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp)
out_freehpt:
if (kvm->arch.hpt_cma_alloc)
- kvm_release_hpt(page, 1 << (order - PAGE_SHIFT));
+ kvm_free_hpt_cma(page, 1 << (order - PAGE_SHIFT));
else
free_pages(hpt, order - PAGE_SHIFT);
return -ENOMEM;
@@ -153,8 +153,8 @@ void kvmppc_free_hpt(struct kvm *kvm)
kvmppc_free_lpid(kvm->arch.lpid);
vfree(kvm->arch.revmap);
if (kvm->arch.hpt_cma_alloc)
- kvm_release_hpt(virt_to_page(kvm->arch.hpt_virt),
- 1 << (kvm->arch.hpt_order - PAGE_SHIFT));
+ kvm_free_hpt_cma(virt_to_page(kvm->arch.hpt_virt),
+ 1 << (kvm->arch.hpt_order - PAGE_SHIFT));
else
free_pages(kvm->arch.hpt_virt,
kvm->arch.hpt_order - PAGE_SHIFT);
diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c
index fd7006b..bcc00b7 100644
--- a/arch/powerpc/kvm/book3s_hv_builtin.c
+++ b/arch/powerpc/kvm/book3s_hv_builtin.c
@@ -49,19 +49,19 @@ static int __init early_parse_kvm_cma_resv(char *p)
}
early_param("kvm_cma_resv_ratio", early_parse_kvm_cma_resv);
-struct page *kvm_alloc_hpt(unsigned long nr_pages)
+struct page *kvm_alloc_hpt_cma(unsigned long nr_pages)
{
VM_BUG_ON(order_base_2(nr_pages) < KVM_CMA_CHUNK_ORDER - PAGE_SHIFT);
return cma_alloc(kvm_cma, nr_pages, order_base_2(HPT_ALIGN_PAGES));
}
-EXPORT_SYMBOL_GPL(kvm_alloc_hpt);
+EXPORT_SYMBOL_GPL(kvm_alloc_hpt_cma);
-void kvm_release_hpt(struct page *page, unsigned long nr_pages)
+void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages)
{
cma_release(kvm_cma, page, nr_pages);
}
-EXPORT_SYMBOL_GPL(kvm_release_hpt);
+EXPORT_SYMBOL_GPL(kvm_free_hpt_cma);
/**
* kvm_cma_reserve() - reserve area for kvm hash pagetable
--
2.5.0
next prev parent reply other threads:[~2016-03-03 1:59 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-03 1:59 [RFC 00/18] PAPR HPT resizing, guest side & host side preliminaries David Gibson
2016-03-03 1:59 ` [RFC 01/18] powerpc/mm: Clean up error handling for htab_remove_mapping David Gibson
2016-03-03 1:59 ` [RFC 02/18] powerpc/mm: Handle removing maybe-present bolted HPTEs David Gibson
2016-03-03 1:59 ` [RFC 03/18] powerpc/mm: Clean up memory hotplug failure paths David Gibson
2016-03-03 1:59 ` [RFC 04/18] powerpc/mm: Split hash page table sizing heuristic into a helper David Gibson
2016-03-03 1:59 ` [RFC 05/18] pseries: Add hypercall wrappers for hash page table resizing David Gibson
2016-03-03 1:59 ` [RFC 06/18] pseries: Add support for hash " David Gibson
2016-03-03 1:59 ` [RFC 07/18] pseries: Advertise HPT resizing support via CAS David Gibson
2016-03-03 1:59 ` [RFC 08/18] pseries: Automatically resize HPT for memory hot add/remove David Gibson
2016-03-03 1:59 ` [RFC 09/18] powerpc/kvm: Corectly report KVM_CAP_PPC_ALLOC_HTAB David Gibson
2016-03-03 1:59 ` [RFC 10/18] powerpc/kvm: Add capability flag for hashed page table resizing David Gibson
2016-03-03 1:59 ` David Gibson [this message]
2016-03-03 1:59 ` [RFC 12/18] powerpc/kvm: Gather HPT related variables into sub-structure David Gibson
2016-03-03 1:59 ` [RFC 13/18] powerpc/kvm: Don't store values derivable from HPT order David Gibson
2016-03-03 1:59 ` [RFC 14/18] powerpc/kvm: Split HPT allocation from activation David Gibson
2016-03-03 1:59 ` [RFC 15/18] powerpc/kvm: Allow KVM_PPC_ALLOCATE_HTAB ioctl() to change HPT size David Gibson
2016-03-03 1:59 ` [RFC 16/18] powerpc/kvm: HPT resizing stub implementation David Gibson
2016-03-03 1:59 ` [RFC 17/18] powerpc/kvm: Advertise availablity of HPT resizing on KVM HV David Gibson
2016-03-03 1:59 ` [RFC 18/18] powerpc/kvm: Outline of HPT resizing implementation David Gibson
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