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| author | Vasily Gorbik <gor@linux.ibm.com> | 2018-06-12 16:46:59 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-06-25 10:14:41 +0200 |
| commit | 514211f542dd6eb877adf46d400ce351c81d95ad (patch) | |
| tree | ccb42150a22016a95412ff2d04e91797ca149eba /arch/s390 | |
| parent | 6075e4ae6e729778ac687a9ffb0c0d5223a0a19e (diff) | |
| download | linux-514211f542dd6eb877adf46d400ce351c81d95ad.tar.bz2 | |
s390/setup: do not reserve the decompressor code
Introduce PARMAREA_END, and use it for memblock reserve of low
memory, which is used for lowcore, kdump data mover code and page
buffer, early stack and parmarea. There is no need to reserve an
area between PARMAREA_END and the decompressor _ehead.
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/setup.h | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/setup.c | 4 |
2 files changed, 3 insertions, 2 deletions
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h index 9c30ebe046f3..be02f0558048 100644 --- a/arch/s390/include/asm/setup.h +++ b/arch/s390/include/asm/setup.h @@ -11,6 +11,7 @@ #define PARMAREA 0x10400 +#define PARMAREA_END 0x11000 /* * Machine features detected in early.c diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index d82a9ec64ea9..c637c12f9e37 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -674,12 +674,12 @@ static void __init reserve_kernel(void) #ifdef CONFIG_DMA_API_DEBUG /* * DMA_API_DEBUG code stumbles over addresses from the - * range [_ehead, _stext]. Mark the memory as reserved + * range [PARMAREA_END, _stext]. Mark the memory as reserved * so it is not used for CONFIG_DMA_API_DEBUG=y. */ memblock_reserve(0, PFN_PHYS(start_pfn)); #else - memblock_reserve(0, (unsigned long)_ehead); + memblock_reserve(0, PARMAREA_END); memblock_reserve((unsigned long)_stext, PFN_PHYS(start_pfn) - (unsigned long)_stext); #endif |