From: Alexander Graf <agraf@suse.de>
To: "kvm@vger.kernel.org mailing list" <kvm@vger.kernel.org>
Cc: kvm-ppc@vger.kernel.org, Gleb Natapov <gleb@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Paul Mackerras <paulus@samba.org>
Subject: [PULL 21/51] KVM: PPC: Book3S PR: Allocate kvm_vcpu structs from kvm_vcpu_cache
Date: Thu, 31 Oct 2013 22:18:06 +0100 [thread overview]
Message-ID: <1383254316-11243-22-git-send-email-agraf@suse.de> (raw)
In-Reply-To: <1383254316-11243-1-git-send-email-agraf@suse.de>
From: Paul Mackerras <paulus@samba.org>
This makes PR KVM allocate its kvm_vcpu structs from the kvm_vcpu_cache
rather than having them embedded in the kvmppc_vcpu_book3s struct,
which is allocated with vzalloc. The reason is to reduce the
differences between PR and HV KVM in order to make is easier to have
them coexist in one kernel binary.
With this, the kvm_vcpu struct has a pointer to the kvmppc_vcpu_book3s
struct. The pointer to the kvmppc_book3s_shadow_vcpu struct has moved
from the kvmppc_vcpu_book3s struct to the kvm_vcpu struct, and is only
present for 32-bit, since it is only used for 32-bit.
Signed-off-by: Paul Mackerras <paulus@samba.org>
[agraf: squash in compile fix from Aneesh]
Signed-off-by: Alexander Graf <agraf@suse.de>
---
arch/powerpc/include/asm/kvm_book3s.h | 4 +---
arch/powerpc/include/asm/kvm_book3s_32.h | 2 +-
arch/powerpc/include/asm/kvm_host.h | 7 +++++++
arch/powerpc/kvm/book3s_32_mmu.c | 8 ++++----
arch/powerpc/kvm/book3s_64_mmu.c | 11 +++++------
arch/powerpc/kvm/book3s_pr.c | 33 ++++++++++++++++++++------------
6 files changed, 39 insertions(+), 26 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index 6bf20b4..603fba4 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -70,8 +70,6 @@ struct hpte_cache {
};
struct kvmppc_vcpu_book3s {
- struct kvm_vcpu vcpu;
- struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
struct kvmppc_sid_map sid_map[SID_MAP_NUM];
struct {
u64 esid;
@@ -194,7 +192,7 @@ extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
{
- return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu);
+ return vcpu->arch.book3s;
}
extern void kvm_return_point(void);
diff --git a/arch/powerpc/include/asm/kvm_book3s_32.h b/arch/powerpc/include/asm/kvm_book3s_32.h
index ce0ef6c..c720e0b 100644
--- a/arch/powerpc/include/asm/kvm_book3s_32.h
+++ b/arch/powerpc/include/asm/kvm_book3s_32.h
@@ -22,7 +22,7 @@
static inline struct kvmppc_book3s_shadow_vcpu *svcpu_get(struct kvm_vcpu *vcpu)
{
- return to_book3s(vcpu)->shadow_vcpu;
+ return vcpu->arch.shadow_vcpu;
}
static inline void svcpu_put(struct kvmppc_book3s_shadow_vcpu *svcpu)
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 0fe4872..404dbc8 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -86,6 +86,9 @@ struct lppaca;
struct slb_shadow;
struct dtl_entry;
+struct kvmppc_vcpu_book3s;
+struct kvmppc_book3s_shadow_vcpu;
+
struct kvm_vm_stat {
u32 remote_tlb_flush;
};
@@ -408,6 +411,10 @@ struct kvm_vcpu_arch {
int slb_max; /* 1 + index of last valid entry in slb[] */
int slb_nr; /* total number of entries in SLB */
struct kvmppc_mmu mmu;
+ struct kvmppc_vcpu_book3s *book3s;
+#endif
+#ifdef CONFIG_PPC_BOOK3S_32
+ struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
#endif
ulong gpr[32];
diff --git a/arch/powerpc/kvm/book3s_32_mmu.c b/arch/powerpc/kvm/book3s_32_mmu.c
index 856af98..b14af6d 100644
--- a/arch/powerpc/kvm/book3s_32_mmu.c
+++ b/arch/powerpc/kvm/book3s_32_mmu.c
@@ -111,10 +111,11 @@ static void kvmppc_mmu_book3s_32_reset_msr(struct kvm_vcpu *vcpu)
kvmppc_set_msr(vcpu, 0);
}
-static hva_t kvmppc_mmu_book3s_32_get_pteg(struct kvmppc_vcpu_book3s *vcpu_book3s,
+static hva_t kvmppc_mmu_book3s_32_get_pteg(struct kvm_vcpu *vcpu,
u32 sre, gva_t eaddr,
bool primary)
{
+ struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
u32 page, hash, pteg, htabmask;
hva_t r;
@@ -132,7 +133,7 @@ static hva_t kvmppc_mmu_book3s_32_get_pteg(struct kvmppc_vcpu_book3s *vcpu_book3
kvmppc_get_pc(&vcpu_book3s->vcpu), eaddr, vcpu_book3s->sdr1, pteg,
sr_vsid(sre));
- r = gfn_to_hva(vcpu_book3s->vcpu.kvm, pteg >> PAGE_SHIFT);
+ r = gfn_to_hva(vcpu->kvm, pteg >> PAGE_SHIFT);
if (kvm_is_error_hva(r))
return r;
return r | (pteg & ~PAGE_MASK);
@@ -203,7 +204,6 @@ static int kvmppc_mmu_book3s_32_xlate_pte(struct kvm_vcpu *vcpu, gva_t eaddr,
struct kvmppc_pte *pte, bool data,
bool primary)
{
- struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
u32 sre;
hva_t ptegp;
u32 pteg[16];
@@ -218,7 +218,7 @@ static int kvmppc_mmu_book3s_32_xlate_pte(struct kvm_vcpu *vcpu, gva_t eaddr,
pte->vpage = kvmppc_mmu_book3s_32_ea_to_vp(vcpu, eaddr, data);
- ptegp = kvmppc_mmu_book3s_32_get_pteg(vcpu_book3s, sre, eaddr, primary);
+ ptegp = kvmppc_mmu_book3s_32_get_pteg(vcpu, sre, eaddr, primary);
if (kvm_is_error_hva(ptegp)) {
printk(KERN_INFO "KVM: Invalid PTEG!\n");
goto no_page_found;
diff --git a/arch/powerpc/kvm/book3s_64_mmu.c b/arch/powerpc/kvm/book3s_64_mmu.c
index ad9ecfd..c110145 100644
--- a/arch/powerpc/kvm/book3s_64_mmu.c
+++ b/arch/powerpc/kvm/book3s_64_mmu.c
@@ -130,11 +130,11 @@ static u32 kvmppc_mmu_book3s_64_get_page(struct kvmppc_slb *slbe, gva_t eaddr)
return ((eaddr & kvmppc_slb_offset_mask(slbe)) >> p);
}
-static hva_t kvmppc_mmu_book3s_64_get_pteg(
- struct kvmppc_vcpu_book3s *vcpu_book3s,
+static hva_t kvmppc_mmu_book3s_64_get_pteg(struct kvm_vcpu *vcpu,
struct kvmppc_slb *slbe, gva_t eaddr,
bool second)
{
+ struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
u64 hash, pteg, htabsize;
u32 ssize;
hva_t r;
@@ -159,10 +159,10 @@ static hva_t kvmppc_mmu_book3s_64_get_pteg(
/* When running a PAPR guest, SDR1 contains a HVA address instead
of a GPA */
- if (vcpu_book3s->vcpu.arch.papr_enabled)
+ if (vcpu->arch.papr_enabled)
r = pteg;
else
- r = gfn_to_hva(vcpu_book3s->vcpu.kvm, pteg >> PAGE_SHIFT);
+ r = gfn_to_hva(vcpu->kvm, pteg >> PAGE_SHIFT);
if (kvm_is_error_hva(r))
return r;
@@ -208,7 +208,6 @@ static int decode_pagesize(struct kvmppc_slb *slbe, u64 r)
static int kvmppc_mmu_book3s_64_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
struct kvmppc_pte *gpte, bool data)
{
- struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
struct kvmppc_slb *slbe;
hva_t ptegp;
u64 pteg[16];
@@ -260,7 +259,7 @@ static int kvmppc_mmu_book3s_64_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
mutex_lock(&vcpu->kvm->arch.hpt_mutex);
do_second:
- ptegp = kvmppc_mmu_book3s_64_get_pteg(vcpu_book3s, slbe, eaddr, second);
+ ptegp = kvmppc_mmu_book3s_64_get_pteg(vcpu, slbe, eaddr, second);
if (kvm_is_error_hva(ptegp))
goto no_page_found;
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 4fa73c3..677d7e3 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -66,7 +66,7 @@ void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
#endif
vcpu->cpu = smp_processor_id();
#ifdef CONFIG_PPC_BOOK3S_32
- current->thread.kvm_shadow_vcpu = to_book3s(vcpu)->shadow_vcpu;
+ current->thread.kvm_shadow_vcpu = vcpu->arch.shadow_vcpu;
#endif
}
@@ -1125,17 +1125,22 @@ struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
int err = -ENOMEM;
unsigned long p;
+ vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
+ if (!vcpu)
+ goto out;
+
vcpu_book3s = vzalloc(sizeof(struct kvmppc_vcpu_book3s));
if (!vcpu_book3s)
- goto out;
+ goto free_vcpu;
+ vcpu->arch.book3s = vcpu_book3s;
#ifdef CONFIG_KVM_BOOK3S_32
- vcpu_book3s->shadow_vcpu =
- kzalloc(sizeof(*vcpu_book3s->shadow_vcpu), GFP_KERNEL);
- if (!vcpu_book3s->shadow_vcpu)
- goto free_vcpu;
+ vcpu->arch.shadow_vcpu =
+ kzalloc(sizeof(*vcpu->arch.shadow_vcpu), GFP_KERNEL);
+ if (!vcpu->arch.shadow_vcpu)
+ goto free_vcpu3s;
#endif
- vcpu = &vcpu_book3s->vcpu;
+
err = kvm_vcpu_init(vcpu, kvm, id);
if (err)
goto free_shadow_vcpu;
@@ -1175,10 +1180,12 @@ uninit_vcpu:
kvm_vcpu_uninit(vcpu);
free_shadow_vcpu:
#ifdef CONFIG_KVM_BOOK3S_32
- kfree(vcpu_book3s->shadow_vcpu);
-free_vcpu:
+ 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);
}
@@ -1189,8 +1196,11 @@ void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
free_page((unsigned long)vcpu->arch.shared & PAGE_MASK);
kvm_vcpu_uninit(vcpu);
- kfree(vcpu_book3s->shadow_vcpu);
+#ifdef CONFIG_KVM_BOOK3S_32
+ kfree(vcpu->arch.shadow_vcpu);
+#endif
vfree(vcpu_book3s);
+ kmem_cache_free(kvm_vcpu_cache, vcpu);
}
int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
@@ -1452,8 +1462,7 @@ static int kvmppc_book3s_init(void)
{
int r;
- r = kvm_init(NULL, sizeof(struct kvmppc_vcpu_book3s), 0,
- THIS_MODULE);
+ r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
if (r)
return r;
--
1.8.1.4
next prev parent reply other threads:[~2013-10-31 21:18 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-31 21:17 [PULL 00/51] ppc patch queue 2013-10-31 Alexander Graf
2013-10-31 21:17 ` [PULL 01/51] KVM: PPC: Book3S HV: Reserve POWER8 space in get/set_one_reg Alexander Graf
2013-10-31 21:17 ` [PULL 02/51] KVM: PPC: Book3S HV: Save/restore SIAR and SDAR along with other PMU registers Alexander Graf
2013-10-31 21:17 ` [PULL 03/51] KVM: PPC: Book3S HV: Implement timebase offset for guests Alexander Graf
2013-10-31 21:17 ` [PULL 04/51] KVM: PPC: Book3S: Add GET/SET_ONE_REG interface for VRSAVE Alexander Graf
2013-10-31 21:17 ` [PULL 05/51] KVM: PPC: Book3S HV: Implement H_CONFER Alexander Graf
2013-10-31 21:17 ` [PULL 06/51] KVM: PPC: Book3S HV: Restructure kvmppc_hv_entry to be a subroutine Alexander Graf
2013-10-31 21:17 ` [PULL 07/51] KVM: PPC: Book3S HV: Pull out interrupt-reading code into " Alexander Graf
2013-10-31 21:17 ` [PULL 08/51] KVM: PPC: Book3S HV: Avoid unbalanced increments of VPA yield count Alexander Graf
2013-10-31 21:17 ` [PULL 09/51] KVM: PPC: BookE: Add GET/SET_ONE_REG interface for VRSAVE Alexander Graf
2013-10-31 21:17 ` [PULL 10/51] KVM: PPC: Book3S HV: Store LPCR value for each virtual core Alexander Graf
2013-10-31 21:17 ` [PULL 11/51] KVM: PPC: Book3S HV: Add support for guest Program Priority Register Alexander Graf
2013-10-31 21:17 ` [PULL 12/51] KVM: PPC: Book3S HV: Support POWER6 compatibility mode on POWER7 Alexander Graf
2013-10-31 21:17 ` [PULL 13/51] KVM: PPC: Book3S HV: Don't crash host on unknown guest interrupt Alexander Graf
2013-10-31 21:17 ` [PULL 14/51] KVM: PPC: Book3S PR: Fix compilation without CONFIG_ALTIVEC Alexander Graf
2013-10-31 21:18 ` [PULL 15/51] KVM: PPC: Book3S PR: Keep volatile reg values in vcpu rather than shadow_vcpu Alexander Graf
2013-10-31 21:18 ` [PULL 16/51] KVM: PPC: Book3S PR: Allow guest to use 64k pages Alexander Graf
2013-10-31 21:18 ` [PULL 17/51] KVM: PPC: Book3S PR: Use 64k host pages where possible Alexander Graf
2013-10-31 21:18 ` [PULL 18/51] KVM: PPC: Book3S PR: Handle PP0 page-protection bit in guest HPTEs Alexander Graf
2013-10-31 21:18 ` [PULL 19/51] KVM: PPC: Book3S PR: Correct errors in H_ENTER implementation Alexander Graf
2013-10-31 21:18 ` [PULL 20/51] KVM: PPC: Book3S PR: Make HPT accesses and updates SMP-safe Alexander Graf
2013-10-31 21:18 ` Alexander Graf [this message]
2013-10-31 21:18 ` [PULL 22/51] KVM: PPC: Book3S: Move skip-interrupt handlers to common code Alexander Graf
2013-10-31 21:18 ` [PULL 23/51] KVM: PPC: Book3S PR: Better handling of host-side read-only pages Alexander Graf
2013-10-31 21:18 ` [PULL 24/51] KVM: PPC: Book3S PR: Use mmu_notifier_retry() in kvmppc_mmu_map_page() Alexander Graf
2013-10-31 21:18 ` [PULL 25/51] KVM: PPC: Book3S PR: Mark pages accessed, and dirty if being written Alexander Graf
2013-10-31 21:18 ` [PULL 26/51] KVM: PPC: Book3S PR: Reduce number of shadow PTEs invalidated by MMU notifiers Alexander Graf
2013-10-31 21:18 ` [PULL 27/51] kvm: powerpc: book3s hv: Fix vcore leak Alexander Graf
2013-10-31 21:18 ` [PULL 28/51] KVM: PPC: Book3S HV: Better handling of exceptions that happen in real mode Alexander Graf
2013-10-31 21:18 ` [PULL 29/51] powerpc: book3e: _PAGE_LENDIAN must be _PAGE_ENDIAN Alexander Graf
2013-10-31 21:18 ` [PULL 30/51] kvm: powerpc: allow guest control "E" attribute in mas2 Alexander Graf
2013-10-31 21:18 ` [PULL 31/51] kvm: powerpc: allow guest control "G" " Alexander Graf
2013-10-31 21:18 ` [PULL 32/51] kvm: powerpc: e500: mark page accessed when mapping a guest page Alexander Graf
2013-10-31 21:18 ` [PULL 33/51] powerpc: remove unnecessary line continuations Alexander Graf
2013-10-31 21:18 ` [PULL 34/51] powerpc: move debug registers in a structure Alexander Graf
2013-11-03 14:30 ` Gleb Natapov
2013-11-03 20:56 ` Benjamin Herrenschmidt
2013-11-04 0:03 ` Scott Wood
2013-11-04 6:43 ` Alexander Graf
2013-11-04 6:51 ` Benjamin Herrenschmidt
2013-10-31 21:18 ` [PULL 35/51] powerpc: export debug registers save function for KVM Alexander Graf
2013-10-31 21:18 ` [PULL 36/51] KVM: PPC: E500: exit to user space on "ehpriv 1" instruction Alexander Graf
2013-10-31 21:18 ` [PULL 37/51] KVM: PPC: E500: Using "struct debug_reg" Alexander Graf
2013-10-31 21:18 ` [PULL 38/51] KVM: PPC: E500: Add userspace debug stub support Alexander Graf
2013-10-31 21:18 ` [PULL 39/51] kvm: powerpc: book3s: remove kvmppc_handler_highmem label Alexander Graf
2013-10-31 21:18 ` [PULL 40/51] kvm: powerpc: book3s: move book3s_64_vio_hv.c into the main kernel binary Alexander Graf
2013-10-31 21:18 ` [PULL 41/51] kvm: powerpc: book3s: pr: Rename KVM_BOOK3S_PR to KVM_BOOK3S_PR_POSSIBLE Alexander Graf
2013-10-31 21:18 ` [PULL 42/51] kvm: powerpc: book3s: Add a new config variable CONFIG_KVM_BOOK3S_HV_POSSIBLE Alexander Graf
2013-10-31 21:18 ` [PULL 43/51] kvm: powerpc: Add kvmppc_ops callback Alexander Graf
2013-10-31 21:18 ` [PULL 44/51] kvm: powerpc: book3s: Cleanup interrupt handling code Alexander Graf
2013-10-31 21:18 ` [PULL 45/51] kvm: powerpc: book3s: Add is_hv_enabled to kvmppc_ops Alexander Graf
2013-10-31 21:18 ` [PULL 46/51] kvm: powerpc: book3s: pr: move PR related tracepoints to a separate header Alexander Graf
2013-10-31 21:18 ` [PULL 47/51] kvm: powerpc: booke: Move booke related tracepoints to " Alexander Graf
2013-10-31 21:18 ` [PULL 48/51] kvm: powerpc: book3s: Support building HV and PR KVM as module Alexander Graf
2013-10-31 21:18 ` [PULL 49/51] kvm: Add struct kvm arg to memslot APIs Alexander Graf
2013-10-31 21:18 ` [PULL 50/51] kvm: powerpc: book3s: Allow the HV and PR selection per virtual machine Alexander Graf
2013-10-31 21:18 ` [PULL 51/51] kvm: powerpc: book3s: drop is_hv_enabled Alexander Graf
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