From: wei.guo.simon@gmail.com
To: linuxppc-dev@lists.ozlabs.org
Cc: Paul Mackerras <paulus@ozlabs.org>,
kvm@vger.kernel.org, kvm-ppc@vger.kernel.org,
Simon Guo <wei.guo.simon@gmail.com>
Subject: [PATCH v2 27/30] KVM: PPC: remove load/put vcpu for KVM_GET/SET_ONE_REG ioctl
Date: Wed, 28 Feb 2018 01:52:35 +0800 [thread overview]
Message-ID: <1519753958-11756-17-git-send-email-wei.guo.simon@gmail.com> (raw)
In-Reply-To: <1519753958-11756-1-git-send-email-wei.guo.simon@gmail.com>
From: Simon Guo <wei.guo.simon@gmail.com>
Due to the vcpu mutex locking/unlock has been moved out of vcpu_load()
/vcpu_put(), KVM_GET_ONE_REG and KVM_SET_ONE_REG doesn't need to do
ioctl with loading vcpu anymore. This patch removes vcpu_load()/vcpu_put()
from KVM_GET_ONE_REG and KVM_SET_ONE_REG ioctl.
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
---
arch/powerpc/kvm/powerpc.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index cf3effd..7987fa3 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -1647,14 +1647,12 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
{
struct kvm_one_reg reg;
r = -EFAULT;
- vcpu_load(vcpu);
if (copy_from_user(®, argp, sizeof(reg)))
goto out;
if (ioctl == KVM_SET_ONE_REG)
r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
else
r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
- vcpu_put(vcpu);
break;
}
--
1.8.3.1
next prev parent reply other threads:[~2018-02-27 18:01 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-27 17:52 [PATCH v2 11/30] KVM: PPC: Book3S PR: implement RFID TM behavior to suppress change from S0 to N0 wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 12/30] KVM: PPC: Book3S PR: prevent TS bits change in kvmppc_interrupt_pr() wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 13/30] KVM: PPC: Book3S PR: adds new kvmppc_copyto_vcpu_tm/kvmppc_copyfrom_vcpu_tm API for PR KVM wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 14/30] KVM: PPC: Book3S PR: add kvmppc_save/restore_tm_sprs() APIs wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 15/30] KVM: PPC: Book3S PR: add transaction memory save/restore skeleton for PR KVM wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 16/30] KVM: PPC: Book3S PR: add math support for PR KVM HTM wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 17/30] KVM: PPC: Book3S PR: make mtspr/mfspr emulation behavior based on active TM SPRs wei.guo.simon
2018-05-15 6:07 ` Paul Mackerras
2018-05-15 12:58 ` Simon Guo
2018-02-27 17:52 ` [PATCH v2 18/30] KVM: PPC: Book3S PR: always fail transaction in guest privilege state wei.guo.simon
2018-05-15 6:07 ` Paul Mackerras
2018-05-16 1:35 ` Simon Guo
2018-02-27 17:52 ` [PATCH v2 19/30] KVM: PPC: Book3S PR: enable NV reg restore for reading TM SPR at " wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 20/30] KVM: PPC: Book3S PR: adds emulation for treclaim wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 21/30] KVM: PPC: Book3S PR: add emulation for trechkpt in PR KVM wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 22/30] KVM: PPC: Book3S PR: add emulation for tabort. for privilege guest wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 23/30] KVM: PPC: Book3S PR: add guard code to prevent returning to guest with PR=0 and Transactional state wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 24/30] KVM: PPC: Book3S PR: Support TAR handling for PR KVM HTM wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 25/30] KVM: PPC: Book3S PR: enable HTM for PR KVM for KVM_CHECK_EXTENSION ioctl wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 26/30] KVM: PPC: move vcpu_load/vcpu_put down to each ioctl case in kvm_arch_vcpu_ioctl wei.guo.simon
2018-02-27 17:52 ` wei.guo.simon [this message]
2018-02-27 17:52 ` [PATCH v2 28/30] KVM: PPC: remove load/put vcpu for KVM_GET_REGS/KVM_SET_REGS wei.guo.simon
2018-02-27 17:52 ` [PATCH v2 29/30] KVM: PPC: add KVM_SET_ONE_REG/KVM_GET_ONE_REG to async ioctl wei.guo.simon
2018-05-15 6:15 ` Paul Mackerras
2018-05-16 2:13 ` Simon Guo
2018-02-27 17:52 ` [PATCH v2 30/30] KVM: PPC: Book3S PR: enable kvmppc_get/set_one_reg_pr() for HTM registers wei.guo.simon
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