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* For each userland team the kernel creates an area in the userland

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address space that is fully locked and marked B_KERNEL_AREA. It can
  thus be accessed by the kernel without additional checks.
* For each userland thread we do create a user_thread structure in that
  area. The structure is accessible from userland via TLS, using the
  private get_user_thread() function.
* Introduced private userland functions [un]defer_signals(). They can be
  used to cheaply disable/re-enable signal delivery. They use the
  user_thread::defer_signals/pending_signals fields which are
  checked/updated by the kernel.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25451 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold
2008-05-11 16:25:35 +00:00
parent 58148e2e02
commit d648afb8d7
10 changed files with 256 additions and 13 deletions
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headers/private/kernel/arch/x86/arch_kernel.h
+3 -2
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@@ -32,7 +32,8 @@
#define USER_SIZE (KERNEL_BASE - 0x10000)
#define USER_TOP (USER_BASE + USER_SIZE)
#define USER_STACK_REGION 0x70000000
#define USER_STACK_REGION_SIZE (USER_TOP - USER_STACK_REGION)
#define KERNEL_USER_DATA_BASE 0x6fff0000
#define USER_STACK_REGION 0x70000000
#define USER_STACK_REGION_SIZE (USER_TOP - USER_STACK_REGION)
#endif /* _KERNEL_ARCH_x86_KERNEL_H */