M. Vefa Bicakci 476eda2539 platform/x86: intel_pmc_core: Do not ioremap RAM ... [ Upstream commit 7d505758b1 ] On a Xen-based PVH virtual machine with more than 4 GiB of RAM, intel_pmc_core fails initialization with the following warning message from the kernel, indicating that the driver is attempting to ioremap RAM: ioremap on RAM at 0x00000000fe000000 - 0x00000000fe001fff WARNING: CPU: 1 PID: 434 at arch/x86/mm/ioremap.c:186 __ioremap_caller.constprop.0+0x2aa/0x2c0 ... Call Trace: ? pmc_core_probe+0x87/0x2d0 [intel_pmc_core] pmc_core_probe+0x87/0x2d0 [intel_pmc_core] This issue appears to manifest itself because of the following fallback mechanism in the driver: if (lpit_read_residency_count_address(&slp_s0_addr)) pmcdev->base_addr = PMC_BASE_ADDR_DEFAULT; The validity of address PMC_BASE_ADDR_DEFAULT (i.e., 0xFE000000) is not verified by the driver, which is what this patch introduces. With this patch, if address PMC_BASE_ADDR_DEFAULT is in RAM, then the driver will not attempt to ioremap the aforementioned address. Signed-off-by: M. Vefa Bicakci <m.v.b@runbox.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2019-10-05 13:09:55 +02:00
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chrome	platform/chrome: cros_ec_proto: check for NULL transfer function	2019-06-15 11:54:08 +02:00
goldfish	platform: goldfish: Retire pdev_bus	2018-08-02 10:24:51 +02:00
mellanox	platform/mellanox: mlxreg-hotplug: Add devm_free_irq call to remove flow	2019-07-10 09:53:38 +02:00
mips	MIPS: Loongson: Add Loongson-3A R3.1 basic support	2018-07-23 17:53:34 -07:00
olpc
x86	platform/x86: intel_pmc_core: Do not ioremap RAM	2019-10-05 13:09:55 +02:00
Kconfig	platform/x86: Move Mellanox platform hotplug driver to platform/mellanox	2018-01-31 10:36:48 -08:00
Makefile	platform/x86: Move Mellanox platform hotplug driver to platform/mellanox	2018-01-31 10:36:48 -08:00