void* xspanalloc(ulong size, int align, ulong span) { uintptr a, v, t; a = PTR2UINT(xalloc(size+align+span)); if(a == 0) panic("xspanalloc: %lud %d %lux\n", size, align, span); if(span > 2) { v = (a + span) & ~(span-1); t = v - a; if(t > 0) xhole(PADDR(UINT2PTR(a)), t); t = a + span - v; if(t > 0) xhole(PADDR(UINT2PTR(v+size+align)), t); } else v = a; if(align > 1) v = (v + align) & ~(align-1); return (void*)v; }
void xinit(void) { Hole *h, *eh; eh = &xlists.hole[Nhole-1]; for(h = xlists.hole; h < eh; h++) h->link = h+1; xlists.flist = xlists.hole; if(conf.npage1) xhole(conf.base1, conf.npage1*BY2PG); conf.npage1 = conf.base1+(conf.npage1*BY2PG); if(conf.npage0) xhole(conf.base0, conf.npage0*BY2PG); conf.npage0 = conf.base0+(conf.npage0*BY2PG); /* Save the bounds of kernel alloc memory for kernel mmu mapping */ conf.base0 = (ulong)KADDR(conf.base0); conf.base1 = (ulong)KADDR(conf.base1); conf.npage0 = (ulong)KADDR(conf.npage0); conf.npage1 = (ulong)KADDR(conf.npage1); debugkey('x', "xalloc/ialloc", ixprt, 0); }
void xfree(void *p) { Xhdr *x; x = UINT2PTR((PTR2UINT(p) - offsetof(Xhdr, data[0]))); if(x->magix != Magichole) { xsummary(); panic("xfree(%#p) %#ux != %#lux", p, Magichole, x->magix); } xhole(PADDR(x), x->size); }
void xfree(void *p) { Xhdr *x; x = (Xhdr*)((ulong)p - datoff); if(x->magix != Magichole) { xsummary(); panic("xfree(0x%lux) 0x%lux!=0x%lux", p, (ulong)Magichole, x->magix); } xhole(PADDR(x), x->size); }
void xfree(void *p) { Xhdr *x; x = (Xhdr*)((ulong)p - offsetof(Xhdr, data[0])); if(x->magix != Magichole) { xsummary(); panic("xfree(%#p) %#ux != %#lux", p, Magichole, x->magix); } xhole(PADDR((uintptr)x), x->size); }
void memholes(void) { Bank *b, *eb; b = bootconf->bank; eb = b+bootconf->nbank; while(b < eb) { if(b->min < (1LL<<32) && b->max < (1LL<<32)) xhole(b->min, b->max-b->min); b++; } }
void xinit(void) { int i, n, upages, kpages; ulong maxkpa; Confmem *m; Pallocmem *pm; Hole *h, *eh; eh = &xlists.hole[Nhole-1]; for(h = xlists.hole; h < eh; h++) h->link = h+1; xlists.flist = xlists.hole; upages = conf.upages; kpages = conf.npage - upages; pm = palloc.mem; maxkpa = -KZERO; for(i=0; i<nelem(conf.mem); i++){ m = &conf.mem[i]; n = m->npage; if(n > kpages) n = kpages; if(m->base >= maxkpa) n = 0; else if(n > 0 && m->base+n*PGSZ >= maxkpa) n = (maxkpa - m->base)/PGSZ; /* first give to kernel */ if(n > 0){ m->kbase = PTR2UINT(KADDR(m->base)); m->klimit = PTR2UINT(KADDR(m->base+n*PGSZ)); xhole(m->base, n*PGSZ); kpages -= n; } /* if anything left over, give to user */ if(n < m->npage){ if(pm >= palloc.mem+nelem(palloc.mem)){ print("xinit: losing %lud pages\n", m->npage-n); continue; } pm->base = m->base+n*PGSZ; pm->npage = m->npage - n; pm++; } } xsummary(); }
void xinit(void) { int i, n, upages, kpages; ulong maxpages; Confmem *m; Pallocmem *pm; Hole *h, *eh; eh = &xlists.hole[Nhole-1]; for(h = xlists.hole; h < eh; h++) h->link = h+1; xlists.flist = xlists.hole; upages = conf.upages; kpages = conf.npage - upages; pm = palloc.mem; for(i=0; i<nelem(conf.mem); i++){ m = &conf.mem[i]; n = m->npage; if(n > kpages) n = kpages; /* don't try to use non-KADDR-able memory for kernel */ maxpages = cankaddr(m->base)/BY2PG; if(n > maxpages) n = maxpages; /* first give to kernel */ if(n > 0){ m->kbase = (ulong)KADDR(m->base); m->klimit = (ulong)KADDR(m->base+n*BY2PG); xhole(m->base, n*BY2PG); kpages -= n; } /* if anything left over, give to user */ if(n < m->npage){ if(pm >= palloc.mem+nelem(palloc.mem)){ print("xinit: losing %lud pages\n", m->npage-n); continue; } pm->base = m->base+n*BY2PG; pm->npage = m->npage - n; pm++; } } xsummary(); }