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[124.171.83.152]) by smtp.gmail.com with ESMTPSA id l23sm210468pjy.45.2020.07.14.17.46.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Jul 2020 17:46:50 -0700 (PDT) Subject: Re: [PATCH 07/15] powerpc/powernv/sriov: Rename truncate_iov To: Oliver O'Halloran , linuxppc-dev@lists.ozlabs.org References: <20200710052340.737567-1-oohall@gmail.com> <20200710052340.737567-8-oohall@gmail.com> From: Alexey Kardashevskiy Autocrypt: addr=aik@ozlabs.ru; keydata= mQINBE+rT0sBEADFEI2UtPRsLLvnRf+tI9nA8T91+jDK3NLkqV+2DKHkTGPP5qzDZpRSH6mD EePO1JqpVuIow/wGud9xaPA5uvuVgRS1q7RU8otD+7VLDFzPRiRE4Jfr2CW89Ox6BF+q5ZPV /pS4v4G9eOrw1v09lEKHB9WtiBVhhxKK1LnUjPEH3ifkOkgW7jFfoYgTdtB3XaXVgYnNPDFo PTBYsJy+wr89XfyHr2Ev7BB3Xaf7qICXdBF8MEVY8t/UFsesg4wFWOuzCfqxFmKEaPDZlTuR tfLAeVpslNfWCi5ybPlowLx6KJqOsI9R2a9o4qRXWGP7IwiMRAC3iiPyk9cknt8ee6EUIxI6 t847eFaVKI/6WcxhszI0R6Cj+N4y+1rHfkGWYWupCiHwj9DjILW9iEAncVgQmkNPpUsZECLT WQzMuVSxjuXW4nJ6f4OFHqL2dU//qR+BM/eJ0TT3OnfLcPqfucGxubhT7n/CXUxEy+mvWwnm 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Wed, 15 Jul 2020 10:46:46 +1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200710052340.737567-8-oohall@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 10/07/2020 15:23, Oliver O'Halloran wrote: > This prevents SR-IOV being used by making the SR-IOV BAR resources > unallocatable. Rename it to reflect what it actually does. > > Signed-off-by: Oliver O'Halloran Reviewed-by: Alexey Kardashevskiy > --- > arch/powerpc/platforms/powernv/pci-sriov.c | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-) > > diff --git a/arch/powerpc/platforms/powernv/pci-sriov.c b/arch/powerpc/platforms/powernv/pci-sriov.c > index f4c74ab1284d..216ceeff69b0 100644 > --- a/arch/powerpc/platforms/powernv/pci-sriov.c > +++ b/arch/powerpc/platforms/powernv/pci-sriov.c > @@ -155,7 +155,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev) > > iov = kzalloc(sizeof(*iov), GFP_KERNEL); > if (!iov) > - goto truncate_iov; > + goto disable_iov; > pdev->dev.archdata.iov_data = iov; > > total_vfs = pci_sriov_get_totalvfs(pdev); > @@ -170,7 +170,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev) > dev_warn(&pdev->dev, "Don't support SR-IOV with" > " non M64 VF BAR%d: %pR. \n", > i, res); > - goto truncate_iov; > + goto disable_iov; > } > > total_vf_bar_sz += pci_iov_resource_size(pdev, > @@ -209,7 +209,8 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev) > * mode is 32MB. > */ > if (iov->m64_single_mode && (size < SZ_32M)) > - goto truncate_iov; > + goto disable_iov; > + > dev_dbg(&pdev->dev, " Fixing VF BAR%d: %pR to\n", i, res); > res->end = res->start + size * mul - 1; > dev_dbg(&pdev->dev, " %pR\n", res); > @@ -220,8 +221,8 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev) > > return; > > -truncate_iov: > - /* To save MMIO space, IOV BAR is truncated. */ > +disable_iov: > + /* Save ourselves some MMIO space by disabling the unusable BARs */ > for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { > res = &pdev->resource[i + PCI_IOV_RESOURCES]; > res->flags = 0; > -- Alexey