Jiuyue Ma 9fb8b8515b x86: add LongModeAddressSize function to cpuid ... LongModeAddressSize was used by kernel 2.6.28.4 for physical address validation, if not properly implemented, PCI resource allocation may failed because of ioremap failed: - linux-2.6.28.4/arch/x86/mm/ioremap.c:27-30 27 static inline int phys_addr_valid(unsigned long addr) 28 { 29 return addr < (1UL << boot_cpu_data.x86_phys_bits); 30 } - linux-2.6.28.4/arch/x86/kernel/cpu/common.c:475-482 475 #ifdef CONFIG_X86_64 476 if (c->extended_cpuid_level >= 0x80000008) { 477 u32 eax = cpuid_eax(0x80000008); 478 479 c->x86_virt_bits = (eax >> 8) & 0xff; 480 c->x86_phys_bits = eax & 0xff; 481 } 482 #endif - linux-2.6.28.4/arch/x86/mm/ioremap.c:209-214 209 if (!phys_addr_valid(phys_addr)) { 210 printk(KERN_WARNING "ioremap: invalid physical address %llx\n", 211 (unsigned long long)phys_addr); 212 WARN_ON_ONCE(1); 213 return NULL; 214 } This patch return 0x0000ffff for LongModeAddressSize, which guarantee phys_addr_valid never failed. Committed by: Nilay Vaish <nilay@cs.wisc.edu>		2014-06-13 16:48:47 +08:00
..
alpha	arch: Use const StaticInstPtr references where possible	2014-09-27 09:08:36 -04:00
arm	arm: Use MiscRegIndex rather than int when flattening	2014-10-01 08:05:52 -04:00
generic	arch: Use const StaticInstPtr references where possible	2014-09-27 09:08:36 -04:00
mips	arch: Use const StaticInstPtr references where possible	2014-09-27 09:08:36 -04:00
null	arch: Cleanup unused ISA traits constants	2014-09-03 07:42:21 -04:00
power	arch: Use const StaticInstPtr references where possible	2014-09-27 09:08:36 -04:00
sparc	arch: Use const StaticInstPtr references where possible	2014-09-27 09:08:36 -04:00
x86	x86: add LongModeAddressSize function to cpuid	2014-06-13 16:48:47 +08:00
isa_parser.py	scons: Address issues related to gcc 4.9.1	2014-09-27 09:08:34 -04:00
micro_asm.py	scons: add slicc and ply to sys.path and PYTHONPATH so everyone has access	2009-09-22 15:24:16 -07:00
micro_asm_test.py	Add a second section to make sure the ROM is extended properly.	2007-05-31 22:21:21 +00:00
SConscript	arch, cpu: Factor out the ExecContext into a proper base class	2014-09-03 07:42:22 -04:00