From: Alexander Graf <agraf@suse.de>
To: kvm-ppc@vger.kernel.org
Cc: kvm list <kvm@vger.kernel.org>, Avi Kivity <avi@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Paul Mackerras <paulus@samba.org>
Subject: [PATCH 50/52] KVM: PPC: Move kvm_vcpu_ioctl_[gs]et_one_reg down to platform-specific code
Date: Fri, 13 Jan 2012 15:31:53 +0100 [thread overview]
Message-ID: <1326465115-5976-51-git-send-email-agraf@suse.de> (raw)
In-Reply-To: <1326465115-5976-1-git-send-email-agraf@suse.de>
From: Paul Mackerras <paulus@samba.org>
This moves the get/set_one_reg implementation down from powerpc.c into
booke.c, book3s_pr.c and book3s_hv.c. This avoids #ifdefs in C code,
but more importantly, it fixes a bug on Book3s HV where we were
accessing beyond the end of the kvm_vcpu struct (via the to_book3s()
macro) and corrupting memory, causing random crashes and file corruption.
On Book3s HV we only accept setting the HIOR to zero, since the guest
runs in supervisor mode and its vectors are never offset from zero.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
[agraf update to apply on top of changed ONE_REG patches]
---
arch/powerpc/include/asm/kvm_ppc.h | 3 ++
arch/powerpc/kvm/book3s_hv.c | 36 ++++++++++++++++++++++++++++++++++
arch/powerpc/kvm/book3s_pr.c | 32 ++++++++++++++++++++++++++++++
arch/powerpc/kvm/booke.c | 10 +++++++++
arch/powerpc/kvm/powerpc.c | 38 ------------------------------------
5 files changed, 81 insertions(+), 38 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index fb70414..a61b5b5 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -176,6 +176,9 @@ int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
+int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
+int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
+
void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
#ifdef CONFIG_KVM_BOOK3S_64_HV
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index fdc804c..3580db8 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -398,6 +398,42 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
return 0;
}
+int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
+{
+ int r = -EINVAL;
+
+ switch (reg->id) {
+ case KVM_REG_PPC_HIOR:
+ r = put_user(0, (u64 __user *)reg->addr);
+ break;
+ default:
+ break;
+ }
+
+ return r;
+}
+
+int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
+{
+ int r = -EINVAL;
+
+ switch (reg->id) {
+ case KVM_REG_PPC_HIOR:
+ {
+ u64 hior;
+ /* Only allow this to be set to zero */
+ r = get_user(hior, (u64 __user *)reg->addr);
+ if (!r && (hior != 0))
+ r = -EINVAL;
+ break;
+ }
+ default:
+ break;
+ }
+
+ return r;
+}
+
int kvmppc_core_check_processor_compat(void)
{
if (cpu_has_feature(CPU_FTR_HVMODE))
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 00efda6..ee222ec 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -874,6 +874,38 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
return 0;
}
+int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
+{
+ int r = -EINVAL;
+
+ switch (reg->id) {
+ case KVM_REG_PPC_HIOR:
+ r = put_user(to_book3s(vcpu)->hior, (u64 __user *)reg->addr);
+ break;
+ default:
+ break;
+ }
+
+ return r;
+}
+
+int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
+{
+ int r = -EINVAL;
+
+ switch (reg->id) {
+ case KVM_REG_PPC_HIOR:
+ r = get_user(to_book3s(vcpu)->hior, (u64 __user *)reg->addr);
+ if (!r)
+ to_book3s(vcpu)->hior_explicit = true;
+ break;
+ default:
+ break;
+ }
+
+ return r;
+}
+
int kvmppc_core_check_processor_compat(void)
{
return 0;
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 9e41f45..ee9e1ee 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -887,6 +887,16 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
return kvmppc_core_set_sregs(vcpu, sregs);
}
+int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
+{
+ return -EINVAL;
+}
+
+int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
+{
+ return -EINVAL;
+}
+
int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{
return -ENOTSUPP;
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 5985209..e232707 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -647,44 +647,6 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
return r;
}
-static int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu,
- struct kvm_one_reg *reg)
-{
- int r = -EINVAL;
-
- switch (reg->id) {
-#ifdef CONFIG_PPC_BOOK3S
- case KVM_REG_PPC_HIOR:
- r = put_user(to_book3s(vcpu)->hior, (u64 __user *)reg->addr);
- break;
-#endif
- default:
- break;
- }
-
- return r;
-}
-
-static int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu,
- struct kvm_one_reg *reg)
-{
- int r = -EINVAL;
-
- switch (reg->id) {
-#ifdef CONFIG_PPC_BOOK3S
- case KVM_ONE_REG_PPC_HIOR:
- r = get_user(to_book3s(vcpu)->hior, (u64 __user *)reg->addr);
- if (!r)
- to_book3s(vcpu)->hior_explicit = true;
- break;
-#endif
- default:
- break;
- }
-
- return r;
-}
-
int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
struct kvm_mp_state *mp_state)
{
--
1.6.0.2
next prev parent reply other threads:[~2012-01-13 14:58 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-13 14:31 [PULL 00/52] ppc patch queue 2012-01-13 Alexander Graf
2012-01-13 14:31 ` [PATCH 01/52] KVM: PPC: e500: don't translate gfn to pfn with preemption disabled Alexander Graf
2012-01-13 14:31 ` [PATCH 02/52] KVM: PPC: e500: Eliminate preempt_disable in local_sid_destroy_all Alexander Graf
2012-01-13 14:31 ` [PATCH 03/52] KVM: PPC: e500: clear up confusion between host and guest entries Alexander Graf
2012-01-13 14:31 ` [PATCH 04/52] KVM: PPC: e500: MMU API Alexander Graf
2012-01-13 14:31 ` [PATCH 05/52] KVM: PPC: e500: tlbsx: fix tlb0 esel Alexander Graf
2012-01-13 14:31 ` [PATCH 06/52] KVM: PPC: e500: Don't hardcode PIR=0 Alexander Graf
2012-01-13 14:31 ` [PATCH 07/52] KVM: PPC: E500: Support hugetlbfs Alexander Graf
2012-01-13 14:31 ` [PATCH 08/52] PPC: Fix race in mtmsr paravirt implementation Alexander Graf
2012-01-13 14:31 ` [PATCH 09/52] Fix DEC truncation for greater than 0xffff_ffff/1000 Alexander Graf
2012-01-13 14:31 ` [PATCH 10/52] KVM: booke: Do Not start decrementer when SPRN_DEC set 0 Alexander Graf
2012-01-13 14:31 ` [PATCH 11/52] KVM: PPC: booke: check for signals in kvmppc_vcpu_run Alexander Graf
2012-01-13 14:31 ` [PATCH 12/52] KVM: PPC: Rename deliver_interrupts to prepare_to_enter Alexander Graf
2012-01-13 14:31 ` [PATCH 13/52] KVM: PPC: Move prepare_to_enter call site into subarch code Alexander Graf
2012-01-13 14:31 ` [PATCH 14/52] KVM: PPC: booke: Check for MSR[WE] in prepare_to_enter Alexander Graf
2012-01-13 14:31 ` [PATCH 15/52] KVM: PPC: booke: Fix int_pending calculation for MSR[EE] paravirt Alexander Graf
2012-01-13 14:31 ` [PATCH 16/52] KVM: PPC: booke: Paravirtualize wrtee Alexander Graf
2012-01-13 14:31 ` [PATCH 17/52] KVM: PPC: Paravirtualize SPRG4-7, ESR, PIR, MASn Alexander Graf
2012-01-13 14:31 ` [PATCH 18/52] KVM: PPC: booke: Improve timer register emulation Alexander Graf
2012-01-13 14:31 ` [PATCH 19/52] KVM: PPC: Book3s: PR: Disable preemption in vcpu_run Alexander Graf
2012-01-13 14:31 ` [PATCH 20/52] KVM: PPC: Book3s: PR: No irq_disable " Alexander Graf
2012-01-13 14:31 ` [PATCH 21/52] KVM: PPC: Use get/set for to_svcpu to help preemption Alexander Graf
2012-01-13 14:31 ` [PATCH 22/52] KVM: PPC: align vcpu_kick with x86 Alexander Graf
2012-01-13 14:31 ` [PATCH 23/52] KVM: PPC: Book3S: PR: Fix signal check race Alexander Graf
2012-01-13 14:31 ` [PATCH 24/52] KVM: PPC: e500: Fix TLBnCFG in KVM_CONFIG_TLB Alexander Graf
2012-01-13 14:31 ` [PATCH 25/52] KVM: PPC: e500: use hardware hint when loading TLB0 entries Alexander Graf
2012-01-13 14:31 ` [PATCH 26/52] KVM: PPC: Avoid patching paravirt template code Alexander Graf
2012-01-13 14:31 ` [PATCH 27/52] KVM: PPC: Make wakeups work again for Book3S HV guests Alexander Graf
2012-01-13 14:31 ` [PATCH 28/52] KVM: PPC: Keep a record of HV guest view of hashed page table entries Alexander Graf
2012-01-13 14:31 ` [PATCH 29/52] KVM: PPC: Keep page physical addresses in per-slot arrays Alexander Graf
2012-01-13 14:31 ` [PATCH 30/52] KVM: PPC: Add an interface for pinning guest pages in Book3s HV guests Alexander Graf
2012-01-13 14:31 ` [PATCH 31/52] KVM: PPC: Make the H_ENTER hcall more reliable Alexander Graf
2012-01-13 14:31 ` [PATCH 32/52] KVM: PPC: Only get pages when actually needed, not in prepare_memory_region() Alexander Graf
2012-01-13 14:31 ` [PATCH 33/52] KVM: PPC: Allow use of small pages to back Book3S HV guests Alexander Graf
2012-01-13 14:31 ` [PATCH 34/52] KVM: PPC: Allow I/O mappings in memory slots Alexander Graf
2012-01-13 14:31 ` [PATCH 35/52] KVM: PPC: Maintain a doubly-linked list of guest HPTEs for each gfn Alexander Graf
2012-01-13 14:31 ` [PATCH 36/52] KVM: PPC: Implement MMIO emulation support for Book3S HV guests Alexander Graf
2012-01-13 14:31 ` [PATCH 37/52] KVM: PPC: Implement MMU notifiers " Alexander Graf
2012-01-13 14:31 ` [PATCH 38/52] KVM: Add barriers to allow mmu_notifier_retry to be used locklessly Alexander Graf
2012-01-13 14:31 ` [PATCH 39/52] KVM: PPC: Allow for read-only pages backing a Book3S HV guest Alexander Graf
2012-01-13 14:31 ` [PATCH 40/52] KVM: PPC: Fix vcpu_create dereference before validity check Alexander Graf
2012-01-13 14:31 ` [PATCH 41/52] KVM: PPC: Add KVM_CAP_NR_VCPUS and KVM_CAP_MAX_VCPUS Alexander Graf
2012-01-13 14:31 ` [PATCH 42/52] KVM: PPC: Book3S HV: Keep HPTE locked when invalidating Alexander Graf
2012-01-13 14:31 ` [PATCH 43/52] KVM: PPC: Book3s HV: Maintain separate guest and host views of R and C bits Alexander Graf
2012-01-13 14:31 ` [PATCH 44/52] KVM: PPC: Book3S HV: Use the hardware referenced bit for kvm_age_hva Alexander Graf
2012-01-13 14:31 ` [PATCH 45/52] KVM: PPC: Book3s HV: Implement get_dirty_log using hardware changed bit Alexander Graf
2012-01-13 14:31 ` [PATCH 46/52] KVM: PPC: booke: Add booke206 TLB trace Alexander Graf
2012-01-13 14:31 ` [PATCH 47/52] KVM: PPC: Use the vcpu kmem_cache when allocating new VCPUs Alexander Graf
2012-01-13 14:31 ` [PATCH 48/52] KVM: PPC: Add generic single register ioctls Alexander Graf
2012-01-13 14:31 ` [PATCH 49/52] KVM: PPC: Add support for explicit HIOR setting Alexander Graf
2012-01-13 14:31 ` Alexander Graf [this message]
2012-01-13 14:31 ` [PATCH 51/52] KVM: PPC: Rename MMIO register identifiers Alexander Graf
2012-01-13 14:31 ` [PATCH 52/52] KVM: PPC: refer to paravirt docs in header file Alexander Graf
2012-01-16 10:55 ` [PULL 00/52] ppc patch queue 2012-01-13 Marcelo Tosatti
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