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s390/cmma: cleanup inline assemblies

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Cleanup cmma related inline assemblies:
- consolidate inline assemblies
- use symbolic names
- add same white space where missing
- add braces to for-loops which contain a multi-line statement

Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2023-10-27 14:12:35 +02:00 committed by Vasily Gorbik
parent 5cf1a563a3
commit 92b519f3bc
1 changed files with 26 additions and 22 deletions
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48
arch/s390/mm/page-states.c
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@ -40,7 +40,7 @@ static inline int cmma_test_essa(void)
" .insn rrf,0xb9ab0000,%[tmp],%[tmp],%[cmd],0\n"
"0: la %[rc],0\n"
"1:\n"
EX_TABLE(0b,1b)
EX_TABLE(0b, 1b)
: [rc] "+&d" (rc), [tmp] "+&d" (tmp)
: [cmd] "i" (ESSA_GET_STATE));
return rc;
@ -58,37 +58,41 @@ void __init cmma_init(void)
cmma_flag = 2;
}
static __always_inline void essa(unsigned long paddr, unsigned char cmd)
{
unsigned long rc;
asm volatile(
" .insn rrf,0xb9ab0000,%[rc],%[paddr],%[cmd],0"
: [rc] "=d" (rc)
: [paddr] "d" (paddr),
[cmd] "i" (cmd));
}
static __always_inline void __set_page_state(struct page *page, int order, unsigned char cmd)
{
unsigned long paddr = page_to_phys(page);
unsigned long num_pages = 1UL << order;
while (num_pages--) {
essa(paddr, cmd);
paddr += PAGE_SIZE;
}
}
static inline void set_page_unused(struct page *page, int order)
{
int i, rc;
for (i = 0; i < (1 << order); i++)
asm volatile(".insn rrf,0xb9ab0000,%0,%1,%2,0"
: "=&d" (rc)
: "a" (page_to_phys(page + i)),
"i" (ESSA_SET_UNUSED));
__set_page_state(page, order, ESSA_SET_UNUSED);
}
static inline void set_page_stable_dat(struct page *page, int order)
{
int i, rc;
for (i = 0; i < (1 << order); i++)
asm volatile(".insn rrf,0xb9ab0000,%0,%1,%2,0"
: "=&d" (rc)
: "a" (page_to_phys(page + i)),
"i" (ESSA_SET_STABLE));
__set_page_state(page, order, ESSA_SET_STABLE);
}
static inline void set_page_stable_nodat(struct page *page, int order)
{
int i, rc;
for (i = 0; i < (1 << order); i++)
asm volatile(".insn rrf,0xb9ab0000,%0,%1,%2,0"
: "=&d" (rc)
: "a" (page_to_phys(page + i)),
"i" (ESSA_SET_STABLE_NODAT));
__set_page_state(page, order, ESSA_SET_STABLE_NODAT);
}
static void mark_kernel_pmd(pud_t *pud, unsigned long addr, unsigned long end)