diff options
| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2023-08-10 22:40:19 +0300 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2024-04-17 14:38:00 +0300 |
| commit | 7de0446f0b26589fa80e384d8edaa2c279583652 (patch) | |
| tree | 14c8bfcee990544bf0f3d1a2884933dd9cfbb428 /arch/s390/kernel | |
| parent | 3bb11234b1d17236ba479f7d0eaa9bd12f2f2493 (diff) | |
| download | linux-7de0446f0b26589fa80e384d8edaa2c279583652.tar.xz | |
s390/boot: Make identity mapping base address explicit
This is a preparatory rework to allow uncoupling virtual
and physical addresses spaces.
Currently the identity mapping base address is implicit
and is always set to zero. Make it explicit by putting
into __identity_base persistent boot variable and use it
in proper context - which is the value of PAGE_OFFSET.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/setup.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index b9d70869bc36..0544830ffb90 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -149,6 +149,7 @@ unsigned long __bootdata_preserved(max_mappable); struct physmem_info __bootdata(physmem_info); struct vm_layout __bootdata_preserved(vm_layout); +EXPORT_SYMBOL_GPL(vm_layout); int __bootdata_preserved(__kaslr_enabled); unsigned int __bootdata_preserved(zlib_dfltcc_support); EXPORT_SYMBOL(zlib_dfltcc_support); |