提交 4ccccc52 编写于 作者: H Heiko Carstens 提交者: Martin Schwidefsky

s390/pgtable: introduce and use generic csp inline asm

We have already two inline assemblies which make use of the csp
instruction. Since I need a third instance let's introduce a generic
inline assmebly which can be used by everyone.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
上级 fd346c9d
master alk-4.19.24 alk-4.19.30 alk-4.19.34 alk-4.19.36 alk-4.19.43 alk-4.19.48 alk-4.19.57 ck-4.19.67 ck-4.19.81 ck-4.19.91 github/fork/deepanshu1422/fix-typo-in-comment github/fork/haosdent/fix-typo linux-next v4.19.91 v4.19.90 v4.19.89 v4.19.88 v4.19.87 v4.19.86 v4.19.85 v4.19.84 v4.19.83 v4.19.82 v4.19.81 v4.19.80 v4.19.79 v4.19.78 v4.19.77 v4.19.76 v4.19.75 v4.19.74 v4.19.73 v4.19.72 v4.19.71 v4.19.70 v4.19.69 v4.19.68 v4.19.67 v4.19.66 v4.19.65 v4.19.64 v4.19.63 v4.19.62 v4.19.61 v4.19.60 v4.19.59 v4.19.58 v4.19.57 v4.19.56 v4.19.55 v4.19.54 v4.19.53 v4.19.52 v4.19.51 v4.19.50 v4.19.49 v4.19.48 v4.19.47 v4.19.46 v4.19.45 v4.19.44 v4.19.43 v4.19.42 v4.19.41 v4.19.40 v4.19.39 v4.19.38 v4.19.37 v4.19.36 v4.19.35 v4.19.34 v4.19.33 v4.19.32 v4.19.31 v4.19.30 v4.19.29 v4.19.28 v4.19.27 v4.19.26 v4.19.25 v4.19.24 v4.19.23 v4.19.22 v4.19.21 v4.19.20 v4.19.19 v4.19.18 v4.19.17 v4.19.16 v4.19.15 v4.19.14 v4.19.13 v4.19.12 v4.19.11 v4.19.10 v4.19.9 v4.19.8 v4.19.7 v4.19.6 v4.19.5 v4.19.4 v4.19.3 v4.19.2 v4.19.1 v4.19 v4.19-rc8 v4.19-rc7 v4.19-rc6 v4.19-rc5 v4.19-rc4 v4.19-rc3 v4.19-rc2 v4.19-rc1 ck-release-21 ck-release-20 ck-release-19.2 ck-release-19.1 ck-release-19 ck-release-18 ck-release-17.2 ck-release-17.1 ck-release-17 ck-release-16 ck-release-15.1 ck-release-15 ck-release-14 ck-release-13.2 ck-release-13 ck-release-12 ck-release-11 ck-release-10 ck-release-9 ck-release-7 alk-release-15 alk-release-14 alk-release-13.2 alk-release-13 alk-release-12 alk-release-11 alk-release-10 alk-release-9 alk-release-7
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......@@ -424,6 +424,19 @@ static inline int mm_use_skey(struct mm_struct *mm)
return 0;
}
static inline void csp(unsigned int *ptr, unsigned int old, unsigned int new)
{
register unsigned long reg2 asm("2") = old;
register unsigned long reg3 asm("3") = new;
unsigned long address = (unsigned long)ptr | 1;
asm volatile(
" csp %0,%3"
: "+d" (reg2), "+m" (*ptr)
: "d" (reg3), "d" (address)
: "cc");
}
/*
* pgd/pmd/pte query functions
*/
......@@ -1068,15 +1081,8 @@ static inline pmd_t mk_pmd_phys(unsigned long physpage, pgprot_t pgprot)
static inline void __pmdp_csp(pmd_t *pmdp)
{
register unsigned long reg2 asm("2") = pmd_val(*pmdp);
register unsigned long reg3 asm("3") = pmd_val(*pmdp) |
_SEGMENT_ENTRY_INVALID;
register unsigned long reg4 asm("4") = ((unsigned long) pmdp) + 5;
asm volatile(
" csp %1,%3"
: "=m" (*pmdp)
: "d" (reg2), "d" (reg3), "d" (reg4), "m" (*pmdp) : "cc");
csp((unsigned int *)pmdp + 1, pmd_val(*pmdp),
pmd_val(*pmdp) | _SEGMENT_ENTRY_INVALID);
}
static inline void __pmdp_idte(unsigned long address, pmd_t *pmdp)
......
......@@ -5,6 +5,7 @@
#include <linux/sched.h>
#include <asm/processor.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
/*
* Flush all TLB entries on the local CPU.
......@@ -44,17 +45,9 @@ void smp_ptlb_all(void);
*/
static inline void __tlb_flush_global(void)
{
register unsigned long reg2 asm("2");
register unsigned long reg3 asm("3");
register unsigned long reg4 asm("4");
long dummy;
dummy = 0;
reg2 = reg3 = 0;
reg4 = ((unsigned long) &dummy) + 1;
asm volatile(
" csp %0,%2"
: : "d" (reg2), "d" (reg3), "d" (reg4), "m" (dummy) : "cc" );
unsigned int dummy = 0;
csp(&dummy, 0, 0);
}
/*
......
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