From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: [PATCH 1/2] x86: Set up resources correctly on Hyper-V Generation 2 Date: Fri, 19 Aug 2016 12:06:51 -0400 Message-ID: <20160819160651.GA7478@char.us.oracle.com> References: <1471547575-14748-1-git-send-email-mawilcox@linuxonhyperv.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1471547575-14748-1-git-send-email-mawilcox-GeNUCkLqbpfIc/EVeNwBgQC/G2K4zDHf@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-nvdimm-bounces-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org Sender: "Linux-nvdimm" To: Matthew Wilcox Cc: linux-nvdimm-y27Ovi1pjclAfugRpC6u6w@public.gmane.org, x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Matthew Wilcox List-Id: linux-nvdimm@lists.01.org On Thu, Aug 18, 2016 at 12:12:54PM -0700, Matthew Wilcox wrote: > From: Matthew Wilcox > > The Generation 2 Hyper-V virtual machine does not emulate PCI. > This check causes the call to pcibios_resource_survey() to be skipped, > and pcibios_resource_survey() calls e820_reserve_resources_late(), which > is where PMEM resources are added to the resource tree. With this patch, > the PMEM devices now show up. > > Signed-off-by: Matthew Wilcox > --- > arch/x86/pci/common.c | 5 ----- > 1 file changed, 5 deletions(-) > > diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c > index 7b6a9d1..d39e799 100644 > --- a/arch/x86/pci/common.c > +++ b/arch/x86/pci/common.c > @@ -516,11 +516,6 @@ void __init pcibios_set_cache_line_size(void) > > int __init pcibios_init(void) > { > - if (!raw_pci_ops && !raw_pci_ext_ops) { > - printk(KERN_WARNING "PCI: System does not support PCI\n"); > - return 0; > - } So shouldn't this be gated on whether the platform is HyperV? > - > pcibios_set_cache_line_size(); > pcibios_resource_survey(); > > -- > 2.8.1 > > _______________________________________________ > Linux-nvdimm mailing list > Linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org > https://lists.01.org/mailman/listinfo/linux-nvdimm