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More work on per-process page directories. It basically works now!

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I spent some time stuck on a problem where processes would clobber each
other's stacks. Took me a moment to figure out that their stacks
were allocated in the sub-4MB linear address range which is shared
between all processes. Oops!
This commit is contained in:
Andreas Kling 2018-11-01 11:30:48 +01:00
parent 1da0a7c949
commit c45f166c63
5 changed files with 147 additions and 61 deletions
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3
Kernel/init.cpp
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@ -29,6 +29,7 @@
#define TEST_VFS
#define KSYMS
#define SPAWN_MULTIPLE_SHELLS
//#define STRESS_TEST_SPAWNING
//#define TEST_ELF_LOADER
@ -188,9 +189,11 @@ static void init_stage2()
int error;
auto* sh0 = Task::createUserTask("/bin/sh", (uid_t)100, (gid_t)100, (pid_t)0, error, nullptr, tty0);
#ifdef SPAWN_MULTIPLE_SHELLS
auto* sh1 = Task::createUserTask("/bin/sh", (uid_t)100, (gid_t)100, (pid_t)0, error, nullptr, tty1);
auto* sh2 = Task::createUserTask("/bin/sh", (uid_t)100, (gid_t)100, (pid_t)0, error, nullptr, tty2);
auto* sh3 = Task::createUserTask("/bin/sh", (uid_t)100, (gid_t)100, (pid_t)0, error, nullptr, tty3);
#endif
#if 0
// It would be nice to exit this process, but right now it instantiates all kinds of things.