From: Marc Zyngier <maz@kernel.org>
To: Matthew Wilcox <willy@infradead.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
kernel-team@android.com, Jonathan Corbet <corbet@lwn.net>,
Catalin Marinas <catalin.marinas@arm.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Sudeep Holla <sudeep.holla@arm.com>, Tejun Heo <tj@kernel.org>,
Dennis Zhou <dennis@kernel.org>, Christoph Lameter <cl@linux.com>,
Will Deacon <will@kernel.org>,
kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v3 00/23] Opt-in always-on nVHE hypervisor
Date: Thu, 26 Nov 2020 16:19:55 +0000 [thread overview]
Message-ID: <6a2a14af06232cdf2f5146cd8ec6fc35@kernel.org> (raw)
In-Reply-To: <20201126155746.GU4327@casper.infradead.org>
On 2020-11-26 15:57, Matthew Wilcox wrote:
> On Thu, Nov 26, 2020 at 03:53:58PM +0000, David Brazdil wrote:
>> The hypervisor starts trapping host SMCs and intercepting host's PSCI
>> CPU_ON/SUSPEND calls. It replaces the host's entry point with its own,
>> initializes the EL2 state of the new CPU and installs the nVHE hyp
>> vector
>> before ERETing to the host's entry point.
>
> I hate CPU people. This is complete gibberish to anyone who doesn't
> already have their head deep in ... whatever you're talking about.
What I hate the most is people having a go at other people because they
don't understand what is being discussed. Who is at fault there?
M.
--
Jazz is not dead. It just smells funny...
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: Matthew Wilcox <willy@infradead.org>
Cc: David Brazdil <dbrazdil@google.com>,
kvmarm@lists.cs.columbia.edu, Jonathan Corbet <corbet@lwn.net>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, James Morse <james.morse@arm.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Dennis Zhou <dennis@kernel.org>, Tejun Heo <tj@kernel.org>,
Christoph Lameter <cl@linux.com>,
Mark Rutland <mark.rutland@arm.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, kernel-team@android.com
Subject: Re: [PATCH v3 00/23] Opt-in always-on nVHE hypervisor
Date: Thu, 26 Nov 2020 16:19:55 +0000 [thread overview]
Message-ID: <6a2a14af06232cdf2f5146cd8ec6fc35@kernel.org> (raw)
In-Reply-To: <20201126155746.GU4327@casper.infradead.org>
On 2020-11-26 15:57, Matthew Wilcox wrote:
> On Thu, Nov 26, 2020 at 03:53:58PM +0000, David Brazdil wrote:
>> The hypervisor starts trapping host SMCs and intercepting host's PSCI
>> CPU_ON/SUSPEND calls. It replaces the host's entry point with its own,
>> initializes the EL2 state of the new CPU and installs the nVHE hyp
>> vector
>> before ERETing to the host's entry point.
>
> I hate CPU people. This is complete gibberish to anyone who doesn't
> already have their head deep in ... whatever you're talking about.
What I hate the most is people having a go at other people because they
don't understand what is being discussed. Who is at fault there?
M.
--
Jazz is not dead. It just smells funny...
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: Matthew Wilcox <willy@infradead.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
kernel-team@android.com, Jonathan Corbet <corbet@lwn.net>,
Catalin Marinas <catalin.marinas@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
James Morse <james.morse@arm.com>,
linux-arm-kernel@lists.infradead.org,
Sudeep Holla <sudeep.holla@arm.com>, Tejun Heo <tj@kernel.org>,
Dennis Zhou <dennis@kernel.org>, Christoph Lameter <cl@linux.com>,
David Brazdil <dbrazdil@google.com>,
Will Deacon <will@kernel.org>,
kvmarm@lists.cs.columbia.edu,
Julien Thierry <julien.thierry.kdev@gmail.com>
Subject: Re: [PATCH v3 00/23] Opt-in always-on nVHE hypervisor
Date: Thu, 26 Nov 2020 16:19:55 +0000 [thread overview]
Message-ID: <6a2a14af06232cdf2f5146cd8ec6fc35@kernel.org> (raw)
In-Reply-To: <20201126155746.GU4327@casper.infradead.org>
On 2020-11-26 15:57, Matthew Wilcox wrote:
> On Thu, Nov 26, 2020 at 03:53:58PM +0000, David Brazdil wrote:
>> The hypervisor starts trapping host SMCs and intercepting host's PSCI
>> CPU_ON/SUSPEND calls. It replaces the host's entry point with its own,
>> initializes the EL2 state of the new CPU and installs the nVHE hyp
>> vector
>> before ERETing to the host's entry point.
>
> I hate CPU people. This is complete gibberish to anyone who doesn't
> already have their head deep in ... whatever you're talking about.
What I hate the most is people having a go at other people because they
don't understand what is being discussed. Who is at fault there?
M.
--
Jazz is not dead. It just smells funny...
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-11-26 16:20 UTC|newest]
Thread overview: 147+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 15:53 [PATCH v3 00/23] Opt-in always-on nVHE hypervisor David Brazdil
2020-11-26 15:53 ` David Brazdil
2020-11-26 15:53 ` David Brazdil
2020-11-26 15:53 ` [PATCH v3 01/23] psci: Support psci_ops.get_version for v0.1 David Brazdil
2020-11-26 15:53 ` David Brazdil
2020-11-26 15:53 ` David Brazdil
2020-11-26 17:21 ` Mark Rutland
2020-11-26 17:21 ` Mark Rutland
2020-11-26 17:21 ` Mark Rutland
2020-11-26 15:54 ` [PATCH v3 02/23] psci: Accessor for configured PSCI function IDs David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 17:24 ` Mark Rutland
2020-11-26 17:24 ` Mark Rutland
2020-11-26 17:24 ` Mark Rutland
2020-11-26 17:29 ` David Brazdil
2020-11-26 17:29 ` David Brazdil
2020-11-26 17:29 ` David Brazdil
2020-11-26 17:34 ` Lorenzo Pieralisi
2020-11-26 17:34 ` Lorenzo Pieralisi
2020-11-26 17:34 ` Lorenzo Pieralisi
2020-11-26 15:54 ` [PATCH v3 03/23] arm64: Make cpu_logical_map() take unsigned int David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 17:28 ` Mark Rutland
2020-11-26 17:28 ` Mark Rutland
2020-11-26 17:28 ` Mark Rutland
2020-12-02 15:44 ` David Brazdil
2020-12-02 15:44 ` David Brazdil
2020-12-02 15:44 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 04/23] arm64: Move MAIR_EL1_SET to asm/memory.h David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 17:35 ` Mark Rutland
2020-11-26 17:35 ` Mark Rutland
2020-11-26 17:35 ` Mark Rutland
2020-12-01 13:58 ` David Brazdil
2020-12-01 13:58 ` David Brazdil
2020-12-01 13:58 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 05/23] arm64: Extract parts of el2_setup into a macro David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 18:06 ` Mark Rutland
2020-11-26 18:06 ` Mark Rutland
2020-11-26 18:06 ` Mark Rutland
2020-12-01 13:55 ` David Brazdil
2020-12-01 13:55 ` David Brazdil
2020-12-01 13:55 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 06/23] kvm: arm64: Add kvm-arm.protected early kernel parameter David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-27 16:32 ` Sudeep Holla
2020-11-27 16:32 ` Sudeep Holla
2020-11-27 16:32 ` Sudeep Holla
2020-12-01 13:19 ` David Brazdil
2020-12-01 13:19 ` David Brazdil
2020-12-01 13:19 ` David Brazdil
2020-12-01 14:07 ` Mark Rutland
2020-12-01 14:07 ` Mark Rutland
2020-12-01 14:07 ` Mark Rutland
2020-12-01 14:43 ` David Brazdil
2020-12-01 14:43 ` David Brazdil
2020-12-01 14:43 ` David Brazdil
2020-12-01 14:58 ` Mark Rutland
2020-12-01 14:58 ` Mark Rutland
2020-12-01 14:58 ` Mark Rutland
2020-11-26 15:54 ` [PATCH v3 07/23] kvm: arm64: Initialize MAIR_EL2 using a constant David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 08/23] kvm: arm64: Remove vector_ptr param of hyp-init David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 09/23] kvm: arm64: Move hyp-init params to a per-CPU struct David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 10/23] kvm: arm64: Add .hyp.data..ro_after_init ELF section David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 11/23] kvm: arm64: Support per_cpu_ptr in nVHE hyp code David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 12/23] kvm: arm64: Create nVHE copy of cpu_logical_map David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 13/23] kvm: arm64: Add SMC handler in nVHE EL2 David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 14/23] kvm: arm64: Bootstrap PSCI " David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 15/23] kvm: arm64: Add offset for hyp VA <-> PA conversion David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 16/23] kvm: arm64: Forward safe PSCI SMCs coming from host David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-27 10:14 ` Lorenzo Pieralisi
2020-11-27 10:14 ` Lorenzo Pieralisi
2020-11-27 10:14 ` Lorenzo Pieralisi
2020-12-02 17:49 ` David Brazdil
2020-12-02 17:49 ` David Brazdil
2020-12-02 17:49 ` David Brazdil
2020-11-27 16:51 ` Sudeep Holla
2020-11-27 16:51 ` Sudeep Holla
2020-11-27 16:51 ` Sudeep Holla
2020-12-01 13:20 ` David Brazdil
2020-12-01 13:20 ` David Brazdil
2020-12-01 13:20 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 17/23] kvm: arm64: Extract __do_hyp_init into a helper function David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 18/23] kvm: arm64: Add function to enter host from KVM nVHE hyp code David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 19/23] kvm: arm64: Intercept host's CPU_ON SMCs David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-27 17:47 ` Sudeep Holla
2020-11-27 17:47 ` Sudeep Holla
2020-11-27 17:47 ` Sudeep Holla
2020-12-01 13:51 ` David Brazdil
2020-12-01 13:51 ` David Brazdil
2020-12-01 13:51 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 20/23] kvm: arm64: Intercept host's CPU_SUSPEND PSCI SMCs David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-12-01 14:57 ` Mark Rutland
2020-12-01 14:57 ` Mark Rutland
2020-12-01 14:57 ` Mark Rutland
2020-11-26 15:54 ` [PATCH v3 21/23] kvm: arm64: Keep nVHE EL2 vector installed David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 22/23] kvm: arm64: Trap host SMCs in protected mode David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` [PATCH v3 23/23] kvm: arm64: Fix EL2 mode availability checks David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:54 ` David Brazdil
2020-11-26 15:57 ` [PATCH v3 00/23] Opt-in always-on nVHE hypervisor Matthew Wilcox
2020-11-26 15:57 ` Matthew Wilcox
2020-11-26 15:57 ` Matthew Wilcox
2020-11-26 16:19 ` Marc Zyngier [this message]
2020-11-26 16:19 ` Marc Zyngier
2020-11-26 16:19 ` Marc Zyngier
2020-11-26 16:23 ` Matthew Wilcox
2020-11-26 16:23 ` Matthew Wilcox
2020-11-26 16:23 ` Matthew Wilcox
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