From: "Radim Krčmář" <rkrcmar@redhat.com>
To: Joel Schopp <joel.schopp@amd.com>
Cc: Gleb Natapov <gleb@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>,
kvm@vger.kernel.org, David Kaplan <David.Kaplan@amd.com>,
Joerg Roedel <joro@8bytes.org>,
linux-kernel@vger.kernel.org, Borislav Petkov <bp@alien8.de>
Subject: Re: [PATCH v3] x86: svm: use kvm_fast_pio_in()
Date: Tue, 3 Mar 2015 17:44:31 +0100 [thread overview]
Message-ID: <20150303164431.GD25123@potion.brq.redhat.com> (raw)
In-Reply-To: <20150302210202.2951.56810.stgit@joelvmguard2.amd.com>
2015-03-02 15:02-0600, Joel Schopp:
> +int kvm_fast_pio_in(struct kvm_vcpu *vcpu, int size, unsigned short port)
> +{
> + unsigned long val;
> + int ret = emulator_pio_in_emulated(&vcpu->arch.emulate_ctxt, size,
> + port, &val, 1);
> +
Btw. does this return 1 in some scenario?
> + if (ret)
> + kvm_register_write(vcpu, VCPU_REGS_RAX, val);
> + else
> + vcpu->arch.complete_userspace_io = complete_fast_pio;
> +
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(kvm_fast_pio_in);
next prev parent reply other threads:[~2015-03-03 16:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-02 21:02 [PATCH v3] x86: svm: use kvm_fast_pio_in() Joel Schopp
2015-03-03 16:42 ` Radim Krčmář
2015-03-03 19:48 ` Joel Schopp
2015-03-03 20:42 ` Radim Krčmář
2015-04-07 12:55 ` Paolo Bonzini
2015-03-03 16:44 ` Radim Krčmář [this message]
2015-03-03 20:03 ` Joel Schopp
2015-03-03 20:44 ` Radim Krčmář
2015-03-13 0:47 ` Marcelo Tosatti
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