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s390/cio,idal: remove superfluous virt_to_phys() conversion

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Only the last 12 bits of virtual / physical addresses are used when masking
with IDA_BLOCK_SIZE - 1. Given that the bits are the same regardless of
virtual or physical address, remove the virtual to physical address
conversion.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2024-03-07 13:28:13 +01:00
parent 57bc3c2219
commit 0c9580cebb
1 changed files with 2 additions and 2 deletions

4
arch/s390/include/asm/idals.h

@ -41,7 +41,7 @@ static inline unsigned int idal_nr_words(void *vaddr, unsigned int length)
{
unsigned int cidaw;
cidaw = __pa(vaddr) & (IDA_BLOCK_SIZE - 1);
cidaw = (unsigned long)vaddr & (IDA_BLOCK_SIZE - 1);
cidaw += length + IDA_BLOCK_SIZE - 1;
cidaw >>= IDA_SIZE_SHIFT;
return cidaw;
@ -54,7 +54,7 @@ static inline unsigned int idal_2k_nr_words(void *vaddr, unsigned int length)
{
unsigned int cidaw;
cidaw = __pa(vaddr) & (IDA_2K_BLOCK_SIZE - 1);
cidaw = (unsigned long)vaddr & (IDA_2K_BLOCK_SIZE - 1);
cidaw += length + IDA_2K_BLOCK_SIZE - 1;
cidaw >>= IDA_2K_SIZE_SHIFT;
return cidaw;