diff options
| author | Vasily Gorbik <gor@linux.ibm.com> | 2024-12-11 12:29:40 +0100 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2025-01-26 17:24:03 +0100 |
| commit | d7bebcb4a898bd214bbd71107f975b7b9f0bde32 (patch) | |
| tree | 3bf6a6e244f3a967b4ba46b7010c11865de20077 /arch/s390/boot | |
| parent | 9af310ef10dedc2f8d400d26fdc99d771537b2fd (diff) | |
s390: Optimize __pa/__va when RANDOMIZE_IDENTITY_BASE is off
Use a zero identity base when CONFIG_RANDOMIZE_IDENTITY_BASE is off,
slightly optimizing __pa/__va calculations.
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'arch/s390/boot')
| -rw-r--r-- | arch/s390/boot/startup.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c index 807594cf246c..58e56aed5f7d 100644 --- a/arch/s390/boot/startup.c +++ b/arch/s390/boot/startup.c @@ -372,8 +372,9 @@ static unsigned long setup_kernel_memory_layout(unsigned long kernel_size) BUILD_BUG_ON(MAX_DCSS_ADDR > (1UL << MAX_PHYSMEM_BITS)); max_mappable = max(ident_map_size, MAX_DCSS_ADDR); max_mappable = min(max_mappable, vmemmap_start); - if (IS_ENABLED(CONFIG_RANDOMIZE_IDENTITY_BASE)) - __identity_base = round_down(vmemmap_start - max_mappable, rte_size); +#ifdef CONFIG_RANDOMIZE_IDENTITY_BASE + __identity_base = round_down(vmemmap_start - max_mappable, rte_size); +#endif boot_debug("identity map: 0x%016lx-0x%016lx\n", __identity_base, __identity_base + ident_map_size); |