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From: Yinghai Lu <yinghai@kernel.org>
To: Bjorn Helgaas <bhelgaas@google.com>,
	David Miller <davem@davemloft.net>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Linus Torvalds <torvalds@linux-foundation.org>
Cc: Wei Yang <weiyang@linux.vnet.ibm.com>,
	Khalid Aziz <khalid.aziz@oracle.com>,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH v12 14/15] PCI: Only treat non-pref mmio64 as pref if host bridge has mmio64
Date: Fri,  3 Jun 2016 17:06:41 -0700	[thread overview]
Message-ID: <20160604000642.28162-15-yinghai@kernel.org> (raw)
In-Reply-To: <20160604000642.28162-1-yinghai@kernel.org>

If host bridge does not have mmio64 above 4G, We don't need to
treat device non-pref mmio64 as as pref mmio64.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Tested-by: Khalid Aziz <khalid.aziz@oracle.com>
---
 drivers/pci/setup-bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index ffb1941..9404032 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -741,7 +741,7 @@ int pci_claim_bridge_resource(struct pci_dev *bridge, int i)
 static bool pci_up_path_over_pref_mem64(struct pci_bus *bus)
 {
 	if (pci_is_root_bus(bus))
-		return true;
+		return to_pci_host_bridge(bus->bridge)->has_mem64;
 
 	if (bus->self) {
 		int i;
-- 
2.8.3

  parent reply	other threads:[~2016-06-04  0:12 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-04  0:06 [PATCH v12 00/15] PCI: Fixup for 64bit resource with sparc Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 01/15] PCI: Let pci_mmap_page_range() take extra resource pointer Yinghai Lu
2016-06-07  8:04   ` Jesper Nilsson
2016-06-08 21:03   ` Bjorn Helgaas
2016-06-08 22:35     ` Yinghai Lu
2016-06-09  0:00       ` Yinghai Lu
2016-06-09 22:36         ` Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 02/15] PCI: Let pci_mmap_page_range() take resource address Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 03/15] sparc/PCI: Use correct offset for bus address to resource Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 04/15] PCI: Add pci_find_bus_resource() Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 05/15] sparc/PCI: Reserve legacy mmio after PCI mmio Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 06/15] sparc/PCI: Add IORESOURCE_MEM_64 for 64-bit resource in OF parsing Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 07/15] sparc/PCI: Keep resource idx order with bridge register number Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 08/15] powerpc/PCI: " Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 09/15] powerpc/PCI: Add IORESOURCE_MEM_64 for 64-bit resource in OF parsing Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 10/15] OF/PCI: Add IORESOURCE_MEM_64 for 64-bit resource Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 11/15] PCI: Check pref compatible bit for mem64 resource of PCIe device Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 12/15] PCI: Only treat non-pref mmio64 as pref if all bridges have MEM_64 Yinghai Lu
2016-06-04  0:06 ` [PATCH v12 13/15] PCI: Add has_mem64 for struct host_bridge Yinghai Lu
2016-06-04  0:06 ` Yinghai Lu [this message]
2016-06-04  0:06 ` [PATCH v12 15/15] PCI: Restore pref MMIO allocation logic for host bridge without mmio64 Yinghai Lu

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