1 /* $NetBSD: param.h,v 1.38 2020/06/29 09:56:51 jdolecek Exp $ */ 2 3 #ifdef __x86_64__ 4 5 #ifndef XENPV 6 /* Must be defined before cpu.h */ 7 #define MAXCPUS 256 8 #endif 9 10 #ifdef _KERNEL 11 #include <machine/cpu.h> 12 #if defined(_KERNEL_OPT) 13 #include "opt_kasan.h" 14 #include "opt_kmsan.h" 15 #include "opt_svs.h" 16 #endif 17 #endif 18 19 #define _MACHINE amd64 20 #define MACHINE "amd64" 21 #define _MACHINE_ARCH x86_64 22 #define MACHINE_ARCH "x86_64" 23 #define MID_MACHINE MID_X86_64 24 25 #define ALIGNED_POINTER(p,t) 1 26 #define ALIGNED_POINTER_LOAD(q,p,t) memcpy((q), (p), sizeof(t)) 27 28 /* 29 * Align stack as required by AMD64 System V ABI. This is because 30 * (1) we want to bypass libc/csu in LLDB, and 31 * (2) rtld in glibc >= 2.23 for Linux/x86_64 requires it. 32 */ 33 #define STACK_ALIGNBYTES (16 - 1) 34 35 #define ALIGNBYTES32 (sizeof(int) - 1) 36 #define ALIGN32(p) (((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32) 37 38 #define PGSHIFT 12 /* LOG2(NBPG) */ 39 #define NBPG (1 << PGSHIFT) /* bytes/page */ 40 #define PGOFSET (NBPG-1) /* byte offset into page */ 41 #define NPTEPG (NBPG/(sizeof (pt_entry_t))) 42 43 #define MAXIOMEM 0xffffffffffff 44 45 /* 46 * Maximum physical memory supported by the implementation. 47 */ 48 #if defined(KMSAN) 49 #define MAXPHYSMEM 0x008000000000ULL /* 512GB */ 50 #else 51 #define MAXPHYSMEM 0x100000000000ULL /* 16TB */ 52 #endif 53 54 /* 55 * XXXfvdl change this (after bootstrap) to take # of bits from 56 * config info into account. 57 */ 58 #define KERNBASE 0xffffffff80000000 /* start of kernel virtual space */ 59 #define KERNTEXTOFF 0xffffffff80200000 /* start of kernel text */ 60 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 61 62 #define KERNTEXTOFF_HI 0xffffffff 63 #define KERNTEXTOFF_LO 0x80200000 64 65 #define KERNBASE_HI 0xffffffff 66 #define KERNBASE_LO 0x80000000 67 68 #define SSIZE 1 /* initial stack size/NBPG */ 69 #define SINCR 1 /* increment of stack/NBPG */ 70 71 #if defined(KASAN) || defined(KMSAN) 72 #define UPAGES 8 73 #elif defined(SVS) 74 #define UPAGES 6 /* 1 page used internally by SVS */ 75 #else 76 #define UPAGES 5 /* pages of u-area (1 for redzone) */ 77 #endif 78 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 79 80 #ifndef MSGBUFSIZE 81 #define MSGBUFSIZE (16*NBPG) /* default message buffer size */ 82 #endif 83 84 /* 85 * Constants related to network buffer management. 86 * MCLBYTES must be no larger than NBPG (the software page size), and, 87 * on machines that exchange pages of input or output buffers with mbuf 88 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 89 * of the hardware page size. 90 */ 91 #define MSIZE 512 /* size of an mbuf */ 92 93 #ifndef MCLSHIFT 94 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 95 /* 2K cluster can hold Ether frame */ 96 #endif /* MCLSHIFT */ 97 98 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 99 100 #ifndef NFS_RSIZE 101 #define NFS_RSIZE 32768 102 #endif 103 #ifndef NFS_WSIZE 104 #define NFS_WSIZE 32768 105 #endif 106 107 /* 108 * Minimum size of the kernel kmem_arena in PAGE_SIZE-sized 109 * logical pages. 110 * No enforced maximum on amd64. 111 */ 112 #define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT) 113 #define NKMEMPAGES_MAX_UNLIMITED 1 114 115 /* 116 * XXXfvdl the PD* stuff is different from i386. 117 */ 118 /* 119 * Mach derived conversion macros 120 */ 121 #define x86_round_pdr(x) \ 122 ((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1)) 123 #define x86_trunc_pdr(x) ((unsigned long)(x) & ~(NBPD_L2 - 1)) 124 #define x86_btod(x) ((unsigned long)(x) >> L2_SHIFT) 125 #define x86_dtob(x) ((unsigned long)(x) << L2_SHIFT) 126 #define x86_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET) 127 #define x86_trunc_page(x) ((unsigned long)(x) & ~PGOFSET) 128 #define x86_btop(x) ((unsigned long)(x) >> PGSHIFT) 129 #define x86_ptob(x) ((unsigned long)(x) << PGSHIFT) 130 131 #define btop(x) x86_btop(x) 132 #define ptob(x) x86_ptob(x) 133 134 #else /* __x86_64__ */ 135 136 #include <i386/param.h> 137 138 #endif /* __x86_64__ */ 139