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support uncachable on-demand mapping

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NAKAMURA Gou
2014-09-17 18:13:36 +09:00
parent fb38917bf6
commit f641090a7e
2 changed files with 7 additions and 0 deletions
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3
kernel/include/process.h
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@ -41,6 +41,9 @@
#define VR_MAXPROT_WRITE 0x00200000 #define VR_MAXPROT_WRITE 0x00200000
#define VR_MAXPROT_EXEC 0x00400000 #define VR_MAXPROT_EXEC 0x00400000
#define VR_MAXPROT_MASK 0x00700000 #define VR_MAXPROT_MASK 0x00700000
#define VR_MEMTYPE_WB 0x00000000 /* write-back */
#define VR_MEMTYPE_UC 0x01000000 /* uncachable */
#define VR_MEMTYPE_MASK 0x0f000000
#define PROT_TO_VR_FLAG(prot) (((unsigned long)(prot) << 16) & VR_PROT_MASK) #define PROT_TO_VR_FLAG(prot) (((unsigned long)(prot) << 16) & VR_PROT_MASK)
#define VRFLAG_PROT_TO_MAXPROT(vrflag) (((vrflag) & VR_PROT_MASK) << 4) #define VRFLAG_PROT_TO_MAXPROT(vrflag) (((vrflag) & VR_PROT_MASK) << 4)

4
kernel/process.c
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@ -791,6 +791,10 @@ enum ihk_mc_pt_attribute common_vrflag_to_ptattr(unsigned long flag, uint64_t fa
attr |= PTATTR_NO_EXECUTE; attr |= PTATTR_NO_EXECUTE;
} }
if ((flag & VR_MEMTYPE_MASK) == VR_MEMTYPE_UC) {
attr |= PTATTR_UNCACHABLE;
}
return attr; return attr;
} }