diff options
Diffstat (limited to 'arch/s390/Kconfig')
-rw-r--r-- | arch/s390/Kconfig | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 70b7645ce745..8116a3328a19 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig | |||
@@ -241,19 +241,17 @@ config PACK_STACK | |||
241 | Say Y if you are unsure. | 241 | Say Y if you are unsure. |
242 | 242 | ||
243 | config SMALL_STACK | 243 | config SMALL_STACK |
244 | bool "Use 4kb/8kb for kernel stack instead of 8kb/16kb" | 244 | bool "Use 8kb for kernel stack instead of 16kb" |
245 | depends on PACK_STACK && !LOCKDEP | 245 | depends on PACK_STACK && 64BIT && !LOCKDEP |
246 | help | 246 | help |
247 | If you say Y here and the compiler supports the -mkernel-backchain | 247 | If you say Y here and the compiler supports the -mkernel-backchain |
248 | option the kernel will use a smaller kernel stack size. For 31 bit | 248 | option the kernel will use a smaller kernel stack size. The reduced |
249 | the reduced size is 4kb instead of 8kb and for 64 bit it is 8kb | 249 | size is 8kb instead of 16kb. This allows to run more threads on a |
250 | instead of 16kb. This allows to run more thread on a system and | 250 | system and reduces the pressure on the memory management for higher |
251 | reduces the pressure on the memory management for higher order | 251 | order page allocations. |
252 | page allocations. | ||
253 | 252 | ||
254 | Say N if you are unsure. | 253 | Say N if you are unsure. |
255 | 254 | ||
256 | |||
257 | config CHECK_STACK | 255 | config CHECK_STACK |
258 | bool "Detect kernel stack overflow" | 256 | bool "Detect kernel stack overflow" |
259 | help | 257 | help |
@@ -384,7 +382,7 @@ config IPL | |||
384 | choice | 382 | choice |
385 | prompt "IPL method generated into head.S" | 383 | prompt "IPL method generated into head.S" |
386 | depends on IPL | 384 | depends on IPL |
387 | default IPL_TAPE | 385 | default IPL_VM |
388 | help | 386 | help |
389 | Select "tape" if you want to IPL the image from a Tape. | 387 | Select "tape" if you want to IPL the image from a Tape. |
390 | 388 | ||