kernel/linux.git/drivers/xen/sys-hypervisor.c, branch linux-4.20.y

xen: add sysfs node for hypervisor build id

2017-06-15T06:50:37+00:00

For support of Xen hypervisor live patching the hypervisor build id is needed. Add a node /sys/hypervisor/properties/buildid containing the information. Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky Signed-off-by: Juergen Gross

xen: add sysfs node for guest type

2017-06-15T06:50:32+00:00

Currently there is no reliable user interface inside a Xen guest to determine its type (e.g. HVM, PV or PVH). Instead of letting user mode try to determine this by various rather hacky mechanisms (parsing of boot messages before they are gone, trying to make use of known subtle differences in behavior of some instructions), add a sysfs node /sys/hypervisor/guest_type to explicitly deliver this information as it is known to the kernel. Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky Signed-off-by: Juergen Gross

xen: rename xen_pmu_init() in sys-hypervisor.c

2016-08-24T17:45:25+00:00

There are two functions with name xen_pmu_init() in the kernel. Rename the one in drivers/xen/sys-hypervisor.c to avoid shadowing the one in arch/x86/xen/pmu.c To avoid the same problem in future rename some more functions. Signed-off-by: Juergen Gross Signed-off-by: David Vrabel

drivers/xen: make sys-hypervisor.c explicitly non-modular

2016-03-21T15:14:03+00:00

The Kconfig currently controlling compilation of this code is: config XEN_SYS_HYPERVISOR bool "Create xen entries under /sys/hypervisor" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since module_init translates to device_initcall in the non-modular case, the init ordering remains unchanged with this commit. However one could argue that fs_initcall() might make more sense here. This change means that the one line function xen_properties_destroy() has only one user left, and since that is inside an #ifdef, we just manually inline it there vs. adding more ifdeffery around the function to avoid compile warnings about "defined but not used". In order to be consistent we also manually inline the other _destroy functions that are also just one line sysfs functions calls with only one call site remaing, even though they wouldn't need #ifdeffery. Signed-off-by: Paul Gortmaker Reviewed-by: Stefano Stabellini Signed-off-by: David Vrabel

xen/PMU: Sysfs interface for setting Xen PMU mode

2015-08-20T11:24:26+00:00

Set Xen's PMU mode via /sys/hypervisor/pmu/pmu_mode. Add XENPMU hypercall. Signed-off-by: Boris Ostrovsky Reviewed-by: Konrad Rzeszutek Wilk Signed-off-by: David Vrabel

xen: sysfs: fix build warning.

2012-10-19T19:17:51+00:00

Define PRI macros for xen_ulong_t and xen_pfn_t and use to fix: drivers/xen/sys-hypervisor.c:288:4: warning: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'xen_ulong_t' [-Wformat] Ideally this would use PRIx64 on ARM but these (or equivalent) don't seem to be available in the kernel. Acked-by: Stefano Stabellini Signed-off-by: Ian Campbell Signed-off-by: Konrad Rzeszutek Wilk

xen: sysfs: include err.h for PTR_ERR etc

2012-10-19T19:17:49+00:00

Fixes build error on ARM: drivers/xen/sys-hypervisor.c: In function 'uuid_show_fallback': drivers/xen/sys-hypervisor.c:127:2: error: implicit declaration of function 'IS_ERR' [-Werror=implicit-function-declaration] drivers/xen/sys-hypervisor.c:128:3: error: implicit declaration of function 'PTR_ERR' [-Werror=implicit-function-declaration] Acked-by: Stefano Stabellini Signed-off-by: Ian Campbell Signed-off-by: Konrad Rzeszutek Wilk

xen/sysfs: Use XENVER_guest_handle to query UUID

2012-08-23T14:16:18+00:00

This hypercall has been present since Xen 3.1, and is the preferred method for a domain to obtain its UUID. Fall back to the xenstore method if using an older version of Xen (which returns -ENOSYS). Signed-off-by: Daniel De Graaf Signed-off-by: Konrad Rzeszutek Wilk

xen: constify all instances of "struct attribute_group"

2012-03-14T16:34:19+00:00

The functions these get passed to have been taking pointers to const since at least 2.6.16. Signed-off-by: Jan Beulich Signed-off-by: Konrad Rzeszutek Wilk

drivers/xen/sys-hypervisor: Cleanup code/data sections definitions

2011-05-19T15:30:41+00:00

Cleanup code/data sections definitions accordingly to include/linux/init.h. Signed-off-by: Daniel Kiper Signed-off-by: Konrad Rzeszutek Wilk