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/linux-4.4.14/Documentation/x86/
Dpat.txt2 PAT (Page Attribute Table)
4 x86 Page Attribute Table (PAT) allows for setting the memory attribute at the
5 page level granularity. PAT is complementary to the MTRR settings which allows
6 for setting of memory types over physical address ranges. However, PAT is
13 PAT allows for different types of memory attributes. The most commonly used
18 PAT APIs
100 With PAT support, a new API pgprot_writecombine is being added. So, drivers can
112 MTRR effects on PAT / non-PAT systems
116 using ioremap*() calls on x86 for both non-PAT and PAT systems. Ideally
118 be a no-op on PAT enabled systems. The region over which a arch_phys_wc_add()
[all …]
Dmtrr.txt9 MTRR use is replaced on modern x86 hardware with PAT. Direct MTRR use by
12 non-PAT systems while a no-op but equally effective on PAT enabled systems.
/linux-4.4.14/arch/x86/mm/
Dpat.c198 #define PAT(x, y) ((u64)PAT_ ## y << ((x)*8)) macro
266 pat = PAT(0, WB) | PAT(1, WT) | PAT(2, UC_MINUS) | PAT(3, UC) | in pat_init()
267 PAT(4, WB) | PAT(5, WT) | PAT(6, UC_MINUS) | PAT(7, UC); in pat_init()
292 pat = PAT(0, WB) | PAT(1, WC) | PAT(2, UC_MINUS) | PAT(3, UC) | in pat_init()
293 PAT(4, WB) | PAT(5, WC) | PAT(6, UC_MINUS) | PAT(7, UC); in pat_init()
321 pat = PAT(0, WB) | PAT(1, WC) | PAT(2, UC_MINUS) | PAT(3, UC) | in pat_init()
322 PAT(4, WB) | PAT(5, WC) | PAT(6, UC_MINUS) | PAT(7, WT); in pat_init()
333 #undef PAT
/linux-4.4.14/drivers/media/i2c/
Dsaa6752hs.c127 static const u8 PAT[] = { variable
474 memcpy(localPAT, PAT, sizeof(PAT)); in saa6752hs_init()
477 crc = crc32_be(~0, &localPAT[7], sizeof(PAT) - 7 - 4); in saa6752hs_init()
478 localPAT[sizeof(PAT) - 4] = (crc >> 24) & 0xFF; in saa6752hs_init()
479 localPAT[sizeof(PAT) - 3] = (crc >> 16) & 0xFF; in saa6752hs_init()
480 localPAT[sizeof(PAT) - 2] = (crc >> 8) & 0xFF; in saa6752hs_init()
481 localPAT[sizeof(PAT) - 1] = crc & 0xFF; in saa6752hs_init()
515 i2c_master_send(client, localPAT, sizeof(PAT)); in saa6752hs_init()
/linux-4.4.14/drivers/staging/rdma/ipath/
DKconfig13 If you have this hardware you will need to boot with PAT disabled
/linux-4.4.14/drivers/media/pci/ivtv/
DKconfig60 In order to use this module, you will need to boot with PAT disabled
/linux-4.4.14/arch/x86/kvm/
Dcpuid.c307 F(PAT) | F(PSE36) | 0 /* PSN */ | F(CLFLUSH) | in __do_cpuid_ent()
317 F(PAT) | F(PSE36) | 0 /* Reserved */ | in __do_cpuid_ent()
/linux-4.4.14/Documentation/vm/
Dhighmem.txt157 like NX and PAT.
/linux-4.4.14/arch/x86/
DKconfig.debug14 be used by people debugging the kernel. Note that with PAT support
DKconfig1621 prompt "x86 PAT support" if EXPERT
1624 Use PAT attributes to setup page level cache control.
/linux-4.4.14/Documentation/
Dkernel-parameters.txt865 debugpat [X86] Enable PAT debugging
2542 nopat [X86] Disable PAT (page attribute table extension of