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linux-sg2042/arch/x86/xen/Kconfig

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xen: configuration Put config options for Xen after the core pieces are in place. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org>
2007-07-18 09:37:05 +08:00
#
# This Kconfig describes xen options
#
config XEN
Normalize config options for guest support 1) Group all the "guest OS" support options together, under a PARAVIRT_GUEST menu. 2) Make those options select CONFIG_PARAVIRT, as suggested by Andi. 3) Make kconfig help titles consistent. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Andi Kleen <ak@suse.de> Cc: Zach Amsden <zach@vmware.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Chris Wright <chrisw@sous-sol.org>
2007-10-22 08:55:21 +08:00
bool "Xen guest support"
select PARAVIRT
x86: Make xen use the paravirt clocksource structs and functions This patch updates the xen guest to use the pvclock structs and helper functions. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-06-03 22:17:30 +08:00
select PARAVIRT_CLOCK
x86: remove the Voyager 32-bit subarch Impact: remove unused/broken code The Voyager subarch last built successfully on the v2.6.26 kernel and has been stale since then and does not build on the v2.6.27, v2.6.28 and v2.6.29-rc5 kernels. No actual users beyond the maintainer reported this breakage. Patches were sent and most of the fixes were accepted but the discussion around how to do a few remaining issues cleanly fizzled out with no resolution and the code remained broken. In the v2.6.30 x86 tree development cycle 32-bit subarch support has been reworked and removed - and the Voyager code, beyond the build problems already known, needs serious and significant changes and probably a rewrite to support it. CONFIG_X86_VOYAGER has been marked BROKEN then. The maintainer has been notified but no patches have been sent so far to fix it. While all other subarchs have been converted to the new scheme, voyager is still broken. We'd prefer to receive patches which clean up the current situation in a constructive way, but even in case of removal there is no obstacle to add that support back after the issues have been sorted out in a mutually acceptable fashion. So remove this inactive code for now. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-23 06:19:12 +08:00
depends on X86_64 || (X86_32 && X86_PAE && !X86_VISWS)
xen: update Kconfig to allow 64-bit Xen Allow Xen to be enabled on 64-bit. Also extend domain size limit from 8 GB (on 32-bit) to 32 GB on 64-bit. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09 06:07:17 +08:00
depends on X86_CMPXCHG && X86_TSC
xen: configuration Put config options for Xen after the core pieces are in place. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org>
2007-07-18 09:37:05 +08:00
help
This is the Linux Xen port. Enabling this will allow the
kernel to boot in a paravirtualized environment under the
Xen hypervisor.
xen: add configurable max domain size Add a config option to set the max size of a Xen domain. This is used to scale the size of the physical-to-machine array; it ends up using around 1 page/GByte, so there's no reason to be very restrictive. For a 32-bit guest, the default value of 8GB is probably sufficient; there's not much point in giving a 32-bit machine much more memory than that. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27 06:31:19 +08:00
xen: introduce XEN_DOM0 as a silent option Add XEN_DOM0 to arch/x86/xen/Kconfig as a silent compile time option that gets enabled when xen and basic x86, acpi and pci support are selected. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2010-09-02 22:47:32 +08:00
config XEN_DOM0
def_bool y
depends on XEN && PCI_XEN && SWIOTLB_XEN
depends on X86_LOCAL_APIC && X86_IO_APIC && ACPI && PCI
# Dummy symbol since people have come to rely on the PRIVILEGED_GUEST
# name in tools.
config XEN_PRIVILEGED_GUEST
def_bool XEN_DOM0
Introduce CONFIG_XEN_PVHVM compile option This patch introduce a CONFIG_XEN_PVHVM compile time option to enable/disable Xen PV on HVM support. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
2010-07-29 21:37:48 +08:00
config XEN_PVHVM
def_bool y
depends on XEN
depends on X86_LOCAL_APIC
xen: add configurable max domain size Add a config option to set the max size of a Xen domain. This is used to scale the size of the physical-to-machine array; it ends up using around 1 page/GByte, so there's no reason to be very restrictive. For a 32-bit guest, the default value of 8GB is probably sufficient; there's not much point in giving a 32-bit machine much more memory than that. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27 06:31:19 +08:00
config XEN_MAX_DOMAIN_MEMORY
xen: convert p2m to a 3 level tree Make the p2m structure a 3 level tree which covers the full possible physical space. The p2m structure contains mappings from the domain's pfns to system-wide mfns. The structure has 3 levels and two roots. The first root is for the domain's own use, and is linked with virtual addresses. The second is all mfn references, and is used by Xen on save/restore to allow it to update the p2m mapping for the domain. At boot, the domain builder provides a simple flat p2m array for all the initially present pages. We construct the two levels above that using the early_brk allocator. After early boot time, set_phys_to_machine() will allocate any missing levels using the normal kernel allocator (at GFP_KERNEL, so it must be called in a normal blocking context). Because the early_brk() API requires us to pre-reserve the maximum amount of memory we could allocate, there is still a CONFIG_XEN_MAX_DOMAIN_MEMORY config option, but its only negative side-effect is to increase the kernel's apparent bss size. However, since all unused brk memory is returned to the heap, there's no real downside to making it large. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2010-08-28 04:28:48 +08:00
int
default 128
xen: add configurable max domain size Add a config option to set the max size of a Xen domain. This is used to scale the size of the physical-to-machine array; it ends up using around 1 page/GByte, so there's no reason to be very restrictive. For a 32-bit guest, the default value of 8GB is probably sufficient; there's not much point in giving a 32-bit machine much more memory than that. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27 06:31:19 +08:00
depends on XEN
help
xen: convert p2m to a 3 level tree Make the p2m structure a 3 level tree which covers the full possible physical space. The p2m structure contains mappings from the domain's pfns to system-wide mfns. The structure has 3 levels and two roots. The first root is for the domain's own use, and is linked with virtual addresses. The second is all mfn references, and is used by Xen on save/restore to allow it to update the p2m mapping for the domain. At boot, the domain builder provides a simple flat p2m array for all the initially present pages. We construct the two levels above that using the early_brk allocator. After early boot time, set_phys_to_machine() will allocate any missing levels using the normal kernel allocator (at GFP_KERNEL, so it must be called in a normal blocking context). Because the early_brk() API requires us to pre-reserve the maximum amount of memory we could allocate, there is still a CONFIG_XEN_MAX_DOMAIN_MEMORY config option, but its only negative side-effect is to increase the kernel's apparent bss size. However, since all unused brk memory is returned to the heap, there's no real downside to making it large. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2010-08-28 04:28:48 +08:00
This only affects the sizing of some bss arrays, the unused
portions of which are freed.
x86, xen, power: fix up config dependencies on PM Xen save/restore needs bits of code enabled by PM_SLEEP, and PM_SLEEP depends on PM. So make XEN_SAVE_RESTORE depend on PM and PM_SLEEP depend on XEN_SAVE_RESTORE. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-16 04:43:42 +08:00
config XEN_SAVE_RESTORE
bool
PM: Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME) From the users' point of view CONFIG_PM is really only used for making it possible to set CONFIG_SUSPEND, CONFIG_HIBERNATION, CONFIG_PM_RUNTIME and (surprisingly enough) CONFIG_XEN_SAVE_RESTORE (CONFIG_PM_OPP also depends on CONFIG_PM, but quite artificially). However, both CONFIG_SUSPEND and CONFIG_HIBERNATION require platform support (independent of CONFIG_PM) and it is not quite obvious that CONFIG_PM has to be set for CONFIG_XEN_SAVE_RESTORE to be available. Thus, from the users' point of view, it would be more logical to automatically select CONFIG_PM if any of the above options depending on it are set. Make CONFIG_PM depend on (CONFIG_PM_SLEEP || CONFIG_PM_RUNTIME), which will cause it to be selected when any of CONFIG_SUSPEND, CONFIG_HIBERNATION, CONFIG_PM_RUNTIME, CONFIG_XEN_SAVE_RESTORE is set and will clarify its meaning. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-02-11 07:06:30 +08:00
depends on XEN
fix XEN_SAVE_RESTORE Kconfig dependencies Make XEN_SAVE_RESTORE select HIBERNATE_CALLBACKS. Remove XEN_SAVE_RESTORE dependency from PM_SLEEP. Signed-off-by: Shriram Rajagopalan <rshriram@cs.ubc.ca> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-04-12 04:54:48 +08:00
select HIBERNATE_CALLBACKS
xen: add debugfs support Add support for exporting statistics on mmu updates, multicall batching and pv spinlocks into debugfs. The base path is xen/ and each subsystem adds its own directory: mmu, multicalls, spinlocks. In each directory, writing 1 to "zero_stats" will cause the corresponding stats to be zeroed the next time they're updated. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-21 08:02:19 +08:00
default y
config XEN_DEBUG_FS
bool "Enable Xen debug and tuning parameters in debugfs"
depends on XEN && DEBUG_FS
default n
help
Enable statistics output and various tuning options in debugfs.
xen: make CONFIG_XEN_SAVE_RESTORE depend on CONFIG_XEN Xen options need to depend on XEN. Also, add newline at end of file. Without this patch you need to disable CONFIG_PM in order to disable CPU hotplugging. Signed-off-by: Chuck Ebbert <cebbert@redhat.com> Acked-by Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-30 06:24:23 +08:00
Enabling this option may incur a significant performance overhead.
xen/debug: WARN_ON when identity PFN has no _PAGE_IOMAP flag set. Only enabled if XEN_DEBUG is enabled. We print a warning when: pfn_to_mfn(pfn) == pfn, but no VM_IO (_PAGE_IOMAP) flag set (and pfn is an identity mapped pfn) pfn_to_mfn(pfn) != pfn, and VM_IO flag is set. (ditto, pfn is an identity mapped pfn) [v2: Make it dependent on CONFIG_XEN_DEBUG instead of ..DEBUG_FS] [v3: Fix compiler warning] Reviewed-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2010-12-24 05:25:29 +08:00
config XEN_DEBUG
bool "Enable Xen debug checks"
depends on XEN
default n
help
Enable various WARN_ON checks in the Xen MMU code.
Enabling this option WILL incur a significant performance overhead.