From: Vaibhav Jain <vaibhav@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,
kvm-ppc@vger.kernel.org
Cc: mikey@neuling.org, sbhat@linux.ibm.com,
amachhiw@linux.vnet.ibm.com, Jordan Niethe <jniethe5@gmail.com>,
gautam@linux.ibm.com, Nicholas Piggin <npiggin@gmail.com>,
David.Laight@ACULAB.COM, kconsul@linux.vnet.ibm.com,
Vaibhav Jain <vaibhav@linux.ibm.com>,
Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Subject: [PATCH 05/12] KVM: PPC: Book3S HV nestedv2: Ensure LPCR_MER bit is passed to the L0
Date: Fri, 1 Dec 2023 18:56:10 +0530 [thread overview]
Message-ID: <20231201132618.555031-6-vaibhav@linux.ibm.com> (raw)
In-Reply-To: <20231201132618.555031-1-vaibhav@linux.ibm.com>
From: Jordan Niethe <jniethe5@gmail.com>
LPCR_MER is conditionally set during entry to a guest if there is a
pending external interrupt. In the nestedv2 case, this change is not
being communicated to the L0, which means it is not being set in the L2.
Ensure the updated LPCR value is passed to the L0.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
---
arch/powerpc/kvm/book3s_hv.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 069c336b6f3c..6d1f0bca27aa 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -4084,6 +4084,8 @@ static int kvmhv_vcpu_entry_nestedv2(struct kvm_vcpu *vcpu, u64 time_limit,
if (rc < 0)
return -EINVAL;
+ kvmppc_gse_put_u64(io->vcpu_run_input, KVMPPC_GSID_LPCR, lpcr);
+
accumulate_time(vcpu, &vcpu->arch.in_guest);
rc = plpar_guest_run_vcpu(0, vcpu->kvm->arch.lpid, vcpu->vcpu_id,
&trap, &i);
--
2.42.0
next prev parent reply other threads:[~2023-12-01 13:29 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-01 13:26 [PATCH 00/12] KVM: PPC: Nested APIv2 : Performance improvements Vaibhav Jain
2023-12-01 13:26 ` [PATCH 01/12] KVM: PPC: Book3S HV nestedv2: Invalidate RPT before deleting a guest Vaibhav Jain
2023-12-07 9:15 ` Aneesh Kumar K.V
2023-12-08 13:45 ` Vaibhav Jain
2023-12-15 16:12 ` Aneesh Kumar K.V
2023-12-18 4:54 ` Vaibhav Jain
2023-12-01 13:26 ` [PATCH 02/12] KVM: PPC: Book3S HV nestedv2: Avoid reloading the tb offset Vaibhav Jain
2023-12-01 13:26 ` [PATCH 03/12] KVM: PPC: Book3S HV nestedv2: Do not check msr on hcalls Vaibhav Jain
2023-12-01 13:26 ` [PATCH 04/12] KVM: PPC: Book3S HV nestedv2: Get the PID only if needed to copy tofrom a guest Vaibhav Jain
2023-12-01 13:26 ` Vaibhav Jain [this message]
2023-12-01 13:26 ` [PATCH 06/12] KVM: PPC: Book3S HV: Handle pending exceptions on guest entry with MSR_EE Vaibhav Jain
2023-12-01 13:26 ` [PATCH 07/12] KVM: PPC: Book3S HV nestedv2: Do not inject certain interrupts Vaibhav Jain
2023-12-01 13:26 ` [PATCH 08/12] KVM: PPC: Book3S HV nestedv2: Avoid msr check in kvmppc_handle_exit_hv() Vaibhav Jain
2023-12-01 13:26 ` [PATCH 09/12] KVM: PPC: Book3S HV nestedv2: Do not call H_COPY_TOFROM_GUEST Vaibhav Jain
2023-12-08 8:15 ` Aneesh Kumar K.V
2023-12-11 3:56 ` Vaibhav Jain
2023-12-11 4:01 ` Aneesh Kumar K.V
2023-12-18 7:02 ` Vaibhav Jain
2023-12-18 7:29 ` Aneesh Kumar K.V
2023-12-01 13:26 ` [PATCH 10/12] KVM: PPC: Book3S HV nestedv2: Register the VPA with the L0 Vaibhav Jain
2023-12-01 13:26 ` [PATCH 11/12] KVM: PPC: Reduce reliance on analyse_instr() in mmio emulation Vaibhav Jain
2023-12-01 13:26 ` [PATCH 12/12] KVM: PPC: Book3S HV nestedv2: Do not cancel pending decrementer exception Vaibhav Jain
2023-12-21 10:44 ` [PATCH 00/12] KVM: PPC: Nested APIv2 : Performance improvements Michael Ellerman
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