From: Keith Busch <kbusch@kernel.org>
To: Kevin Xie <kevin.xie@starfivetech.com>
Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Minda Chen <minda.chen@starfivetech.com>,
Conor Dooley <conor@kernel.org>, "kw@linux.com" <kw@linux.com>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"daire.mcnamara@microchip.com" <daire.mcnamara@microchip.com>,
"emil.renner.berthing@canonical.com"
<emil.renner.berthing@canonical.com>,
"krzysztof.kozlowski+dt@linaro.org"
<krzysztof.kozlowski+dt@linaro.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-riscv@lists.infradead.org"
<linux-riscv@lists.infradead.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
"aou@eecs.berkeley.edu" <aou@eecs.berkeley.edu>,
"p.zabel@pengutronix.de" <p.zabel@pengutronix.de>,
Mason Huo <mason.huo@starfivetech.com>,
Leyfoon Tan <leyfoon.tan@starfivetech.com>
Subject: Re: [PATCH v15,RESEND 22/23] PCI: starfive: Offload the NVMe timeout workaround to host drivers.
Date: Wed, 13 Mar 2024 21:39:34 -0600 [thread overview]
Message-ID: <ZfJxdgd57oQwqNHt@kbusch-mbp> (raw)
In-Reply-To: <ZfJmMcs2UThVSC4v@kbusch-mbp>
On Wed, Mar 13, 2024 at 08:51:29PM -0600, Keith Busch wrote:
> I suppose we could quirk a non-posted transaction in the interrupt
> handler to force flush pending memory updates, but that will noticeably
> harm your nvme performance. Maybe if you constrain such behavior to the
> spurious IRQ_NONE condition, then it might be okay? I don't know.
Hm, that may not be good enough: if nvme completions can be reordered
with their msi's, then I assume data may reorder with their completion.
Your application will inevitably see stale and corrupted data, so it
sounds like you need some kind of barrier per completion. Ouch!
next prev parent reply other threads:[~2024-03-14 3:39 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-27 10:34 [PATCH v15,RESEND 00/23] Refactoring Microchip PCIe driver and add StarFive PCIe Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 01/23] dt-bindings: PCI: Add PLDA XpressRICH PCIe host common properties Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 02/23] PCI: microchip: Move pcie-microchip-host.c to plda directory Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 03/23] PCI: microchip: Move PLDA IP register macros to pcie-plda.h Minda Chen
2024-02-29 10:11 ` Lorenzo Pieralisi
2024-02-29 10:52 ` Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 04/23] PCI: microchip: Add bridge_addr field to struct mc_pcie Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 05/23] PCI: microchip: Rename two PCIe data structures Minda Chen
2024-02-29 10:01 ` Lorenzo Pieralisi
2024-03-01 11:00 ` Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 06/23] PCI: microchip: Move PCIe host data structures to plda-pcie.h Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 07/23] PCI: microchip: Rename two setup functions Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 08/23] PCI: microchip: Change the argument of plda_pcie_setup_iomems() Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 09/23] PCI: microchip: Move setup functions to pcie-plda-host.c Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 10/23] PCI: microchip: Rename interrupt related functions Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 11/23] PCI: microchip: Add num_events field to struct plda_pcie_rp Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 12/23] PCI: microchip: Add request_event_irq() callback function Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 13/23] PCI: microchip: Add INTx and MSI event num to struct plda_event Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 14/23] PCI: microchip: Add get_events() callback and add PLDA get_event() Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 15/23] PCI: microchip: Add event irqchip field to host port and add PLDA irqchip Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 16/23] PCI: microchip: Move IRQ functions to pcie-plda-host.c Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 17/23] PCI: plda: Add event bitmap field to struct plda_pcie_rp Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 18/23] PCI: plda: Add host init/deinit and map bus functions Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 19/23] dt-bindings: PCI: Add StarFive JH7110 PCIe controller Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 20/23] PCI: Add PCIE_RESET_CONFIG_DEVICE_WAIT_MS waiting time value Minda Chen
2024-02-27 10:35 ` [PATCH v15,RESEND 21/23] PCI: starfive: Add JH7110 PCIe controller Minda Chen
2024-02-29 14:24 ` Lorenzo Pieralisi
2024-03-04 12:52 ` Kevin Xie
2024-02-27 10:35 ` [PATCH v15,RESEND 22/23] PCI: starfive: Offload the NVMe timeout workaround to host drivers Minda Chen
2024-02-29 15:08 ` Lorenzo Pieralisi
2024-03-04 18:08 ` Palmer Dabbelt
2024-03-05 15:56 ` Lorenzo Pieralisi
2024-03-14 2:18 ` Kevin Xie
2024-03-14 2:51 ` Keith Busch
2024-03-14 3:39 ` Keith Busch [this message]
2024-03-20 7:12 ` Bo Gan
2024-03-20 8:42 ` Kevin Xie
2024-02-27 10:35 ` [PATCH v15,RESEND 23/23] riscv: dts: starfive: add PCIe dts configuration for JH7110 Minda Chen
2024-02-27 18:06 ` [PATCH v15,RESEND 00/23] Refactoring Microchip PCIe driver and add StarFive PCIe Aurelien Jarno
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