在menuconfig中CONFIG_COMPAT_VDSO在哪里？

Question

我正在尝试编译一个Linux，以便在XenServer 5.6 fp1上运行轻量级和半虚拟化。

我正在使用这里给出的指南：http://www.mad-hacking.net/documentation/linux/deployment/xen/pv-guest-basics.xml

但是当我到达选项CONFIG_COMPAT_VDSO时，我感到很困惑。

它在make menuconfig的确切位置是什么？该站点指出，这些选项位于处理器类型和功能组中，但我没有看到：

[*] Tickless System (Dynamic Ticks)                                  
[*] High Resolution Timer Support                                    
[*] Symmetric multi-processing support                               
[ ] Support for extended (non-PC) x86 platforms                      
[ ] Single-depth WCHAN output                                        
[*] Paravirtualized guest support  --->                              
[*] Disable Bootmem code (NEW)                                       
[ ] Memtest (NEW)                                                    
    Processor family (Core 2/newer Xeon)  --->                       
(2) Maximum number of CPUs                                           
[ ] SMT (Hyperthreading) scheduler support                           
[ ] Multi-core scheduler support                                     
    Preemption Model (No Forced Preemption (Server))  --->           
[ ] Reroute for broken boot IRQs                                     
[ ] Machine Check / overheating reporting                            
< > Dell laptop support (NEW)                                        
< > /dev/cpu/microcode - microcode support                           
<M> /dev/cpu/*/msr - Model-specific register support                 
<M> /dev/cpu/*/cpuid - CPU information support                       
[ ] Numa Memory Allocation and Scheduler Support                     
    Memory model (Sparse Memory)  --->                               
[*] Sparse Memory virtual memmap (NEW)                               
[*] Allow for memory hot-add                                         
[*]   Allow for memory hot remove                                    
[ ] Allow for memory compaction                                      
[*] Page migration                                                   
[*] Enable KSM for page merging                                      
(65536) Low address space to protect from user allocation (NEW)      
[ ] Check for low memory corruption                                  
[ ] Reserve low 64K of RAM on AMI/Phoenix BIOSen                     
-*- MTRR (Memory Type Range Register) support                        
[ ]   MTRR cleanup support                                           
[*] Enable seccomp to safely compute untrusted bytecode (NEW)        
[*] Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)
    Timer frequency (100 HZ)  --->                                   
[ ] kexec system call                                                
[ ] kernel crash dumps                                               
[*] Build a relocatable kernel (NEW)                                 
-*- Support for hot-pluggable CPUs                                   
[ ] Built-in kernel command line (NEW) 

FYI，我正在配置Gentoo的内核v2.6.36-变硬-R9

Answer 1

正如您已经说过的，它在“处理器类型和功能”下。

您正在编译Gentoo的硬内核源代码，因此代码将经历许多修补程序。

谷歌的快速搜索结果是：Gentoo内核VDSO。看起来Gentoo以前甚至已经禁用了几个版本。

为什么不直接从kernel.org下载呢？