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authorLinus Torvalds <torvalds@linux-foundation.org>2018-08-13 19:07:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-13 19:07:17 -0700
commit85a0b791bc17f7a49280b33e2905d109c062a47b (patch)
tree3b5ef2f586bcf07c5702b6b782b63cf50351f13b /init
parent13e091b6dd0e78a518a7d8756607d3acb8215768 (diff)
parent669f3765b755fd8739ab46ce3a9c6292ce8b3d2a (diff)
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens: "Since Martin is on vacation you get the s390 pull request from me: - Host large page support for KVM guests. As the patches have large impact on arch/s390/mm/ this series goes out via both the KVM and the s390 tree. - Add an option for no compression to the "Kernel compression mode" menu, this will come in handy with the rework of the early boot code. - A large rework of the early boot code that will make life easier for KASAN and KASLR. With the rework the bootable uncompressed image is not generated anymore, only the bzImage is available. For debuggung purposes the new "no compression" option is used. - Re-enable the gcc plugins as the issue with the latent entropy plugin is solved with the early boot code rework. - More spectre relates changes: + Detect the etoken facility and remove expolines automatically. + Add expolines to a few more indirect branches. - A rewrite of the common I/O layer trace points to make them consumable by 'perf stat'. - Add support for format-3 PCI function measurement blocks. - Changes for the zcrypt driver: + Add attributes to indicate the load of cards and queues. + Restructure some code for the upcoming AP device support in KVM. - Build flags improvements in various Makefiles. - A few fixes for the kdump support. - A couple of patches for gcc 8 compile warning cleanup. - Cleanup s390 specific proc handlers. - Add s390 support to the restartable sequence self tests. - Some PTR_RET vs PTR_ERR_OR_ZERO cleanup. - Lots of bug fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (107 commits) s390/dasd: fix hanging offline processing due to canceled worker s390/dasd: fix panic for failed online processing s390/mm: fix addressing exception after suspend/resume rseq/selftests: add s390 support s390: fix br_r1_trampoline for machines without exrl s390/lib: use expoline for all bcr instructions s390/numa: move initial setup of node_to_cpumask_map s390/kdump: Fix elfcorehdr size calculation s390/cpum_sf: save TOD clock base in SDBs for time conversion KVM: s390: Add huge page enablement control s390/mm: Add huge page gmap linking support s390/mm: hugetlb pages within a gmap can not be freed KVM: s390: Add skey emulation fault handling s390/mm: Add huge pmd storage key handling s390/mm: Clear skeys for newly mapped huge guest pmds s390/mm: Clear huge page storage keys on enable_skey s390/mm: Add huge page dirty sync support s390/mm: Add gmap pmd invalidation and clearing s390/mm: Add gmap pmd notification bit setting s390/mm: Add gmap pmd linking ...
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig15
1 files changed, 14 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 041f3a022122..8b1ab81ecda8 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -125,10 +125,13 @@ config HAVE_KERNEL_LZO
config HAVE_KERNEL_LZ4
bool
+config HAVE_KERNEL_UNCOMPRESSED
+ bool
+
choice
prompt "Kernel compression mode"
default KERNEL_GZIP
- depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_XZ || HAVE_KERNEL_LZO || HAVE_KERNEL_LZ4
+ depends on HAVE_KERNEL_GZIP || HAVE_KERNEL_BZIP2 || HAVE_KERNEL_LZMA || HAVE_KERNEL_XZ || HAVE_KERNEL_LZO || HAVE_KERNEL_LZ4 || HAVE_KERNEL_UNCOMPRESSED
help
The linux kernel is a kind of self-extracting executable.
Several compression algorithms are available, which differ
@@ -207,6 +210,16 @@ config KERNEL_LZ4
is about 8% bigger than LZO. But the decompression speed is
faster than LZO.
+config KERNEL_UNCOMPRESSED
+ bool "None"
+ depends on HAVE_KERNEL_UNCOMPRESSED
+ help
+ Produce uncompressed kernel image. This option is usually not what
+ you want. It is useful for debugging the kernel in slow simulation
+ environments, where decompressing and moving the kernel is awfully
+ slow. This option allows early boot code to skip the decompressor
+ and jump right at uncompressed kernel image.
+
endchoice
config DEFAULT_HOSTNAME