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  1. 01 10月, 2015 1 次提交
    • M
      scripts/kconfig/Makefile: Allow KBUILD_DEFCONFIG to be a target · d2036f30
      由 Michael Ellerman 提交于 
      Arch Makefiles can set KBUILD_DEFCONFIG to tell kbuild the name of the
defconfig that should be built by default.

However currently there is an assumption that KBUILD_DEFCONFIG points to
a file at arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG).

We would like to use a target, using merge_config, as our defconfig, so
adapt the logic in scripts/kconfig/Makefile to allow that.

To minimise the chance of breaking anything, we first check if
KBUILD_DEFCONFIG is a file, and if so we do the old logic. If it's not a
file, then we call the top-level Makefile with KBUILD_DEFCONFIG as the
target.
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Acked-by: NMichal Marek <mmarek@suse.com>
      d2036f30
  3. 16 6月, 2015 2 次提交
    • L
      kconfig: add xenconfig defconfig helper · 6c668505
      由 Luis R. Rodriguez 提交于 
      This lets you build a kernel which can support xen dom0
or xen guests on i386, x86-64 and arm64 by just using:

   make xenconfig

You can start from an allnoconfig and then switch to xenconfig.
This also splits out the options which are available currently
to be built with x86 and 'make ARCH=arm64' under a shared config.

Technically xen supports a dom0 kernel and also a guest
kernel configuration but upon review with the xen team
since we don't have many dom0 options its best to just
combine these two into one.

A few generic notes: we enable both of these:

CONFIG_INET=y
CONFIG_BINFMT_ELF=y

although technically not required given you likely will
end up with a pretty useless system otherwise.

A few architectural differences worth noting:

$ make allnoconfig; make xenconfig > /dev/null ; \
	grep XEN .config > 64-bit-config
$ make ARCH=i386 allnoconfig; make ARCH=i386 xenconfig > /dev/null; \
	grep XEN .config > 32-bit-config
$ make ARCH=arm64 allnoconfig; make ARCH=arm64 xenconfig > /dev/null; \
	grep XEN .config > arm64-config

Since the options are already split up with a generic config and
architecture specific configs you anything on the x86 configs
are known to only work right now on x86. For instance arm64 doesn't
support MEMORY_HOTPLUG yet as such although we try to enabe it
generically arm64 doesn't have it yet, so we leave the xen
specific kconfig option XEN_BALLOON_MEMORY_HOTPLUG on x86's config
file to set expecations correctly.

Then on x86 we have differences between i386 and x86-64. The difference
between 64-bit-config and 32-bit-config is you don't get XEN_MCE_LOG as
this is only supported on 64-bit. You also do not get on i386
XEN_BALLOON_MEMORY_HOTPLUG, there does not seem to be any technical
reasons to not allow this but I gave up after a few attempts.

Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: penberg@kernel.org
Cc: levinsasha928@gmail.com
Cc: mtosatti@redhat.com
Cc: fengguang.wu@intel.com
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xenproject.org
Acked-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: NJulien Grall <julien.grall@linaro.org>
Acked-by: NMichal Marek <mmarek@suse.cz>
Acked-by: NDavid Rientjes <rientjes@google.com>
Reviewed-by: NJosh Triplett <josh@joshtriplett.org>
Signed-off-by: NLuis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: NDavid Vrabel <david.vrabel@citrix.com>
      6c668505
    • L
      kconfig: clarify kvmconfig is for kvm · 9bcd776d
      由 Luis R. Rodriguez 提交于 
      We'll be adding options for xen as well.

Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: penberg@kernel.org
Cc: levinsasha928@gmail.com
Cc: mtosatti@redhat.com
Cc: fengguang.wu@intel.com
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xenproject.org
Reviewed-by: NJosh Triplett <josh@joshtriplett.org>
Acked-by: NDavid Rientjes <rientjes@google.com>
Acked-by: NBorislav Petkov <bp@suse.de>
Acked-by: NMichal Marek <mmarek@suse.cz>
Signed-off-by: NLuis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: NDavid Vrabel <david.vrabel@citrix.com>
      9bcd776d
  5. 04 6月, 2015 1 次提交
  7. 03 6月, 2015 1 次提交
  9. 28 5月, 2015 1 次提交
  11. 09 4月, 2015 1 次提交
  13. 08 4月, 2015 1 次提交
  15. 24 3月, 2015 4 次提交
  17. 22 8月, 2014 1 次提交
  19. 19 8月, 2014 2 次提交
  21. 09 8月, 2014 2 次提交
    • J
      x86: Add "make tinyconfig" to configure the tiniest possible kernel · 0da1d4a0
      由 Josh Triplett 提交于 
      Since commit 5d2acfc7 ("kconfig: make
allnoconfig disable options behind EMBEDDED and EXPERT") in 3.15-rc1,
"make allnoconfig" disables every possible config option.

However, a few configuration options (CC_OPTIMIZE_FOR_SIZE,
OPTIMIZE_INLINING) produce a smaller kernel when turned on, and a few
choices exist (compression, highmem, allocator) for which a non-default
option produces a smaller kernel.

Add a "tinyconfig" option, which starts from allnoconfig and then sets
these options to configure the tiniest possible kernel.  This provides a
better baseline for embedded systems or efforts to reduce kernel size.
Signed-off-by: NJosh Triplett <josh@joshtriplett.org>
      0da1d4a0
    • J
      x86, platform, kconfig: move kvmconfig functionality to a helper · 3aaefce1
      由 Josh Triplett 提交于 
      The new mergeconfig helper makes it easier to add other partial
configurations similar to kvmconfig.  Architecture-independent portions
of those partial configurations should go in
kernel/configs/${name}.config, and architecture-dependent portions
should go in arch/${arch}/configs/${name}.config.

Based on a patch by Luis R. Rodriguez <mcgrof@suse.com>.
Originally-Signed-off-by: NLuis R. Rodriguez <mcgrof@suse.com>

Modified to make the helper name more general than just virtualization,
support architecture-dependent and architecture-independent partial
configurations, move the helper and kvmconfig to
scripts/kconfig/Makefile, and factor out more of the common file path.
Signed-off-by: NJosh Triplett <josh@joshtriplett.org>
      3aaefce1
  23. 10 6月, 2014 2 次提交
  25. 07 3月, 2013 1 次提交
  27. 21 12月, 2012 1 次提交
  29. 28 9月, 2012 1 次提交
  31. 26 7月, 2012 1 次提交
    • S
      kconfig: Document oldnoconfig to what it really does · 67d34a6a
      由 Steven Rostedt 提交于 
      The make target 'oldnoconfig' is a misnomer. It doesn't set new symbols
to 'n', but instead sets it to their default values.

Unfortunately, assuming that it actually did this, broke ktest in some
of its tests. For example, the tests to create a minimum config and even
a config bisect, depends on removing various configs and using
oldnoconfig to get rid of other configs that may have depended on it.

But because some configs that it was trying to disable, were in fact
default enabled, this caused those configs to re-enable and corrupt the
test.

I thought about fixing oldnoconfig, but I'm afraid that people are
already dependent on its current behavior. Instead, I'm just updating
the documentation to state that it sets the new symbols to their default
values and not to 'n'.

Ideally, this would be called, 'olddefconfig' and we have an
'oldnoconfig' that actually disables the new symbols. But it's useless
for me now. If it changed, ktest would need to be consistent between
each version, and that would be to difficult to detect. I'll handle this
issue with ktest with other means.
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: NMichal Marek <mmarek@suse.cz>
      67d34a6a
  33. 14 7月, 2012 1 次提交
  35. 13 7月, 2012 2 次提交
  37. 15 1月, 2012 1 次提交
  39. 19 12月, 2011 1 次提交
  41. 08 8月, 2011 3 次提交
  43. 10 6月, 2011 3 次提交
  45. 07 6月, 2011 2 次提交
  47. 29 4月, 2011 4 次提交