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| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2022-12-19 21:08:27 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-01-13 14:15:06 +0100 |
| commit | 2154e0b3282d0029ea7790a8414d61d5dc7d72ff (patch) | |
| tree | 4dcd6085f7402a5a21d2e007fcbf1ef301b5020f /arch/s390/mm/maccess.c | |
| parent | s390/mm: allocate Real Memory Copy Area in decompressor (diff) | |
| download | linux-2154e0b3282d0029ea7790a8414d61d5dc7d72ff.tar.xz linux-2154e0b3282d0029ea7790a8414d61d5dc7d72ff.zip | |
s390/mm: allocate Absolute Lowcore Area in decompressor
Move Absolute Lowcore Area allocation to the decompressor.
As result, get_abs_lowcore() and put_abs_lowcore() access
brackets become really straight and do not require complex
execution context analysis and LAP and interrupts tackling.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/mm/maccess.c')
| -rw-r--r-- | arch/s390/mm/maccess.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c index 7c66b3ad05e0..d02a61620cfa 100644 --- a/arch/s390/mm/maccess.c +++ b/arch/s390/mm/maccess.c @@ -151,7 +151,6 @@ void *xlate_dev_mem_ptr(phys_addr_t addr) void *ptr = phys_to_virt(addr); void *bounce = ptr; struct lowcore *abs_lc; - unsigned long flags; unsigned long size; int this_cpu, cpu; @@ -167,10 +166,10 @@ void *xlate_dev_mem_ptr(phys_addr_t addr) goto out; size = PAGE_SIZE - (addr & ~PAGE_MASK); if (addr < sizeof(struct lowcore)) { - abs_lc = get_abs_lowcore(&flags); + abs_lc = get_abs_lowcore(); ptr = (void *)abs_lc + addr; memcpy(bounce, ptr, size); - put_abs_lowcore(abs_lc, flags); + put_abs_lowcore(abs_lc); } else if (cpu == this_cpu) { ptr = (void *)(addr - virt_to_phys(lowcore_ptr[cpu])); memcpy(bounce, ptr, size); |