From mboxrd@z Thu Jan 1 00:00:00 1970 From: Waiman Long Date: Thu, 17 Oct 2019 19:11:55 +0000 Subject: Re: [PATCH 3/3] pci: Default to PCI_MSI_IRQ_DOMAIN Message-Id: <38389bfa-3fb2-c941-9f9d-0fa573112c58@redhat.com> List-Id: References: <20191017181937.7004-1-palmer@sifive.com> <20191017181937.7004-4-palmer@sifive.com> In-Reply-To: <20191017181937.7004-4-palmer@sifive.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Palmer Dabbelt , Christoph Hellwig , michal.simek@xilinx.com, helgaas@kernel.org Cc: tony.luck@intel.com, fenghua.yu@intel.com, heiko.carstens@de.ibm.com, gor@linux.ibm.com, borntraeger@de.ibm.com, bhelgaas@google.com, will@kernel.org, Greg KH , kstewart@linuxfoundation.org, pbonzini@redhat.com, firoz.khan@linaro.org, yamada.masahiro@socionext.com, mingo@kernel.org, peterz@infradead.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, linux-pci@vger.kernel.org On 10/17/19 2:19 PM, Palmer Dabbelt wrote: > As far as I can tell, the only reason there was an architecture > whitelist for PCI_MSI_IRQ_DOMAIN is because it requires msi.h. I've > built this for all the architectures that play nice with make.cross, but > I haven't boot tested it anywhere. > > Signed-off-by: Palmer Dabbelt > --- > drivers/pci/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig > index a304f5ea11b9..77c1428cd945 100644 > --- a/drivers/pci/Kconfig > +++ b/drivers/pci/Kconfig > @@ -52,7 +52,7 @@ config PCI_MSI > If you don't know what to do here, say Y. > > config PCI_MSI_IRQ_DOMAIN > - def_bool ARC || ARM || ARM64 || X86 || RISCV > + def_bool y > depends on PCI_MSI > select GENERIC_MSI_IRQ_DOMAIN > The linking of asm-generic/msi.h is currently enabled for ./arch/powerpc/include/asm/Kbuild:generic-y += msi.h ./arch/arm/include/asm/Kbuild:generic-y += msi.h ./arch/mips/include/asm/Kbuild:generic-y += msi.h ./arch/riscv/include/asm/Kbuild:generic-y += msi.h ./arch/arc/include/asm/Kbuild:generic-y += msi.h ./arch/arm64/include/asm/Kbuild:generic-y += msi.h ./arch/sparc/include/asm/Kbuild:generic-y += msi.h Your patchset adds 2 more and x86 has its own asm/msi.h. That leads to a total of 10 archs, but there are 37 sub-directories under arch. It is possible that the other architectures don't have PCI_MSI set. Still it may be a bit risky to set it to "def_bool y". Cheers, Longman