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KVM/MIPS32: KVM Guest kernel support.

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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>
This commit is contained in:
Sanjay Lal
2012-11-21 18:34:03 -08:00
committed by Ralf Baechle
parent 669e846e6c
commit 9843b030cc
7 changed files with 52 additions and 3 deletions
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9
arch/mips/include/asm/mach-generic/spaces.h
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@@ -20,14 +20,21 @@
#endif
#ifdef CONFIG_32BIT
#ifdef CONFIG_KVM_GUEST
#define CAC_BASE _AC(0x40000000, UL)
#else
#define CAC_BASE _AC(0x80000000, UL)
#endif
#define IO_BASE _AC(0xa0000000, UL)
#define UNCAC_BASE _AC(0xa0000000, UL)
#ifndef MAP_BASE
#ifdef CONFIG_KVM_GUEST
#define MAP_BASE _AC(0x60000000, UL)
#else
#define MAP_BASE _AC(0xc0000000, UL)
#endif
#endif
/*
* Memory above this physical address will be considered highmem.