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| author | Sanjay Lal <sanjayl@kymasys.com> | 2012-11-21 18:34:03 -0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-05-08 03:55:35 +0200 |
| commit | 9843b030cc951bce4a4d9bec38b5155c96eb1740 (patch) | |
| tree | dd219e76dce1e1b92e6f5fc19e8767b60827c7ee /arch/mips/include/asm/processor.h | |
| parent | 669e846e6c4e13f16d7418973609931e362cb16a (diff) | |
| download | lwn-9843b030cc951bce4a4d9bec38b5155c96eb1740.tar.gz lwn-9843b030cc951bce4a4d9bec38b5155c96eb1740.zip | |
KVM/MIPS32: KVM Guest kernel support.
Both Guest kernel and Guest Userspace execute in UM. The memory map is as follows:
Guest User address space: 0x00000000 -> 0x40000000
Guest Kernel Unmapped: 0x40000000 -> 0x60000000
Guest Kernel Mapped: 0x60000000 -> 0x80000000
- Guest Usermode virtual memory is limited to 1GB.
Signed-off-by: Sanjay Lal <sanjayl@kymasys.com>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/processor.h')
| -rw-r--r-- | arch/mips/include/asm/processor.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h index 2a5fa7abb346..71686c897dea 100644 --- a/arch/mips/include/asm/processor.h +++ b/arch/mips/include/asm/processor.h @@ -44,11 +44,16 @@ extern unsigned int vced_count, vcei_count; #define SPECIAL_PAGES_SIZE PAGE_SIZE #ifdef CONFIG_32BIT +#ifdef CONFIG_KVM_GUEST +/* User space process size is limited to 1GB in KVM Guest Mode */ +#define TASK_SIZE 0x3fff8000UL +#else /* * User space process size: 2GB. This is hardcoded into a few places, * so don't change it unless you know what you are doing. */ #define TASK_SIZE 0x7fff8000UL +#endif #ifdef __KERNEL__ #define STACK_TOP_MAX TASK_SIZE |