kernel.git/drivers/xen/Kconfig, branch linux-3.7.y

ARM: Xen: fix initial build problems

2012-10-09T18:29:01Z

* The XEN_BALLOON code requires the balloon infrastructure that is not getting built on ARM. * The tmem hypercall is not available on ARM * ARMv6 does not support cmpxchg on 16-bit words that are used in the Xen grant table code, so we must ensure that Xen support is only built on ARMv7-only kernels not combined ARMv6/v7 kernels. * sys-hypervisor.c needs to include linux/err.h in order to use the IS_ERR/PTR_ERR/ERR_PTR family of functions. Signed-off-by: Arnd Bergmann Acked-by: Ian Campbell Cc: Stefano Stabellini Cc: Konrad Rzeszutek Wilk Cc: Jeremy Fitzhardinge Cc: xen-devel@lists.xensource.com

xen/mce: Add mcelog support for Xen platform

2012-07-19T19:51:36Z

When MCA error occurs, it would be handled by Xen hypervisor first, and then the error information would be sent to initial domain for logging. This patch gets error information from Xen hypervisor and convert Xen format error into Linux format mcelog. This logic is basically self-contained, not touching other kernel components. By using tools like mcelog tool users could read specific error information, like what they did under native Linux. To test follow directions outlined in Documentation/acpi/apei/einj.txt Acked-and-tested-by: Borislav Petkov Signed-off-by: Ke, Liping Signed-off-by: Jiang, Yunhong Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Liu, Jinsong Signed-off-by: Konrad Rzeszutek Wilk

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2012-05-23T02:22:50Z

Pull trivial updates from Jiri Kosina: "As usual, it's mostly typo fixes, redundant code elimination and some documentation updates." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (57 commits) edac, mips: don't change code that has been removed in edac/mips tree xtensa: Change mail addresses of Hannes Weiner and Oskar Schirmer lib: Change mail address of Oskar Schirmer net: Change mail address of Oskar Schirmer arm/m68k: Change mail address of Sebastian Hess i2c: Change mail address of Oskar Schirmer net: Fix tcp_build_and_update_options comment in struct tcp_sock atomic64_32.h: fix parameter naming mismatch Kconfig: replace "--- help ---" with "---help---" c2port: fix bogus Kconfig "default no" edac: Fix spelling errors. qla1280: Remove redundant NULL check before release_firmware() call remoteproc: remove redundant NULL check before release_firmware() qla2xxx: Remove redundant NULL check before release_firmware() call. aic94xx: Get rid of redundant NULL check before release_firmware() call tehuti: delete redundant NULL check before release_firmware() qlogic: get rid of a redundant test for NULL before call to release_firmware() bna: remove redundant NULL test before release_firmware() tg3: remove redundant NULL test before release_firmware() call typhoon: get rid of redundant conditional before all to release_firmware() ...

xen/Kconfig: fix Kconfig layout

2012-05-07T16:26:28Z

Fit it into 80 columns so that it is readable in menuconfig. Signed-off-by: Andrew Morton Signed-off-by: Konrad Rzeszutek Wilk

Fix typo in various Kconfig file

2012-04-16T12:40:08Z

Correct spelling typo in various Kconfig file. Signed-off-by: Masanari Iida Signed-off-by: Jiri Kosina

xen/acpi: Fix Kconfig dependency on CPU_FREQ

2012-03-24T13:23:06Z

The functions: "acpi_processor_*" sound like they depend on CONFIG_ACPI_PROCESSOR but in reality they are exposed when CONFIG_CPU_FREQ=[y|m]. As such update the Kconfig to have this dependency and fix compile issues: ERROR: "acpi_processor_unregister_performance" [drivers/xen/xen-acpi-processor.ko] undefined! ERROR: "acpi_processor_notify_smm" [drivers/xen/xen-acpi-processor.ko] undefined! ERROR: "acpi_processor_register_performance" [drivers/xen/xen-acpi-processor.ko] undefined! ERROR: "acpi_processor_preregister_performance" [drivers/xen/xen-acpi-processor.ko] undefined! Note: We still need the CONFIG_ACPI Reported-by: Randy Dunlap Signed-off-by: Konrad Rzeszutek Wilk

xen/acpi-processor: Do not depend on CPU frequency scaling drivers.

2012-03-20T19:33:53Z

With patch "xen/cpufreq: Disable the cpu frequency scaling drivers from loading." we do not have to worry about said drivers loading themselves before the xen-acpi-processor driver. Hence we can remove the default selection (=y if CPU frequency drivers were built-in, or =m if CPU frequency drivers were built as modules), and just select =m for the default case. Signed-off-by: Konrad Rzeszutek Wilk

xen/acpi-processor: C and P-state driver that uploads said data to hypervisor.

2012-03-14T16:35:42Z

This driver solves three problems: 1). Parse and upload ACPI0007 (or PROCESSOR_TYPE) information to the hypervisor - aka P-states (cpufreq data). 2). Upload the the Cx state information (cpuidle data). 3). Inhibit CPU frequency scaling drivers from loading. The reason for wanting to solve 1) and 2) is such that the Xen hypervisor is the only one that knows the CPU usage of different guests and can make the proper decision of when to put CPUs and packages in proper states. Unfortunately the hypervisor has no support to parse ACPI DSDT tables, hence it needs help from the initial domain to provide this information. The reason for 3) is that we do not want the initial domain to change P-states while the hypervisor is doing it as well - it causes rather some funny cases of P-states transitions. For this to work, the driver parses the Power Management data and uploads said information to the Xen hypervisor. It also calls acpi_processor_notify_smm() to inhibit the other CPU frequency scaling drivers from being loaded. Everything revolves around the 'struct acpi_processor' structure which gets updated during the bootup cycle in different stages. At the startup, when the ACPI parser starts, the C-state information is processed (processor_idle) and saved in said structure as 'power' element. Later on, the CPU frequency scaling driver (powernow-k8 or acpi_cpufreq), would call the the acpi_processor_* (processor_perflib functions) to parse P-states information and populate in the said structure the 'performance' element. Since we do not want the CPU frequency scaling drivers from loading we have to call the acpi_processor_* functions to parse the P-states and call "acpi_processor_notify_smm" to stop them from loading. There is also one oddity in this driver which is that under Xen, the physical online CPU count can be different from the virtual online CPU count. Meaning that the macros 'for_[online|possible]_cpu' would process only up to virtual online CPU count. We on the other hand want to process the full amount of physical CPUs. For that, the driver checks if the ACPI IDs count is different from the APIC ID count - which can happen if the user choose to use dom0_max_vcpu argument. In such a case a backup of the PM structure is used and uploaded to the hypervisor. [v1-v2: Initial RFC implementations that were posted] [v3: Changed the name to passthru suggested by Pasi Kärkkäinen ] [v4: Added vCPU != pCPU support - aka dom0_max_vcpus support] [v5: Cleaned up the driver, fix bug under Athlon XP] [v6: Changed the driver to a CPU frequency governor] [v7: Jan Beulich suggestion to make it a cpufreq scaling driver made me rework it as driver that inhibits cpufreq scaling driver] [v8: Per Jan's review comments, fixed up the driver] [v9: Allow to continue even if acpi_processor_preregister_perf.. fails] Signed-off-by: Konrad Rzeszutek Wilk

xen: Add privcmd device driver

2011-12-16T18:29:31Z

Access to arbitrary hypercalls is currently provided via xenfs. This adds a standard character device to handle this. The support in xenfs remains for backward compatibility and uses the device driver code. Signed-off-by: Bastian Blank Acked-by: Ian Campbell Signed-off-by: Konrad Rzeszutek Wilk

xen: remove XEN_PLATFORM_PCI config option

2011-09-29T14:52:16Z

Xen PVHVM needs xen-platform-pci, on the other hand xen-platform-pci is useless in any other cases. Therefore remove the XEN_PLATFORM_PCI config option and compile xen-platform-pci built-in if XEN_PVHVM is selected. Changes to v1: - remove xen-platform-pci.o and just use platform-pci.o since it is not externally visible anymore. Signed-off-by: Stefano Stabellini Signed-off-by: Konrad Rzeszutek Wilk