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[Qemu-devel] [PATCH v2 02/10] hw/mips: Add API to convert KVM guest KSEG
From: |
James Hogan |
Subject: |
[Qemu-devel] [PATCH v2 02/10] hw/mips: Add API to convert KVM guest KSEG0 <-> GPA |
Date: |
Mon, 16 Dec 2013 14:12:37 +0000 |
From: Sanjay Lal <address@hidden>
Add APIs for converting between KVM guest KSEG0 addresses and guest
physical addresses. These will be used for translating addresses when
loading a kernel ELF in KVM mode.
In KVM trap and emulate mode both the guest kernel and guest userspace
execute in useg:
Guest User address space: 0x00000000..0x3fffffff
Guest Kernel Unmapped: 0x40000000..0x5fffffff
Guest Kernel Mapped: 0x60000000..0x7fffffff
Signed-off-by: Sanjay Lal <address@hidden>
Signed-off-by: James Hogan <address@hidden>
Cc: Aurelien Jarno <address@hidden>
---
Changes in v2:
- Expand commit message
- Remove unnecessary include
---
hw/mips/addr.c | 10 ++++++++++
include/hw/mips/cpudevs.h | 4 ++++
2 files changed, 14 insertions(+)
diff --git a/hw/mips/addr.c b/hw/mips/addr.c
index 99488f1..e62d6f4 100644
--- a/hw/mips/addr.c
+++ b/hw/mips/addr.c
@@ -28,7 +28,17 @@ uint64_t cpu_mips_kseg0_to_phys(void *opaque, uint64_t addr)
return addr & 0x7fffffffll;
}
+uint64_t cpu_mips_kvm_um_kseg0_to_phys(void *opaque, uint64_t addr)
+{
+ return addr & 0x3fffffffll;
+}
+
uint64_t cpu_mips_phys_to_kseg0(void *opaque, uint64_t addr)
{
return addr | ~0x7fffffffll;
}
+
+uint64_t cpu_mips_kvm_um_phys_to_kseg0(void *opaque, uint64_t addr)
+{
+ return addr | 0x40000000ll;
+}
diff --git a/include/hw/mips/cpudevs.h b/include/hw/mips/cpudevs.h
index 6bea24b..9e5af37 100644
--- a/include/hw/mips/cpudevs.h
+++ b/include/hw/mips/cpudevs.h
@@ -6,6 +6,10 @@
uint64_t cpu_mips_kseg0_to_phys(void *opaque, uint64_t addr);
uint64_t cpu_mips_phys_to_kseg0(void *opaque, uint64_t addr);
+uint64_t cpu_mips_kvm_um_kseg0_to_phys(void *opaque, uint64_t addr);
+uint64_t cpu_mips_kvm_um_phys_to_kseg0(void *opaque, uint64_t addr);
+
+
/* mips_int.c */
void cpu_mips_irq_init_cpu(CPUMIPSState *env);
--
1.8.1.2
- [Qemu-devel] [PATCH v2 05/10] kvm: Set sigmask length to 16 for MIPS targets, (continued)
- [Qemu-devel] [PATCH v2 05/10] kvm: Set sigmask length to 16 for MIPS targets, James Hogan, 2013/12/16
- [Qemu-devel] [PATCH v2 08/10] hw/mips: In KVM mode, inject IRQ2 (I/O) interupts via ioctls, James Hogan, 2013/12/16
- [Qemu-devel] [PATCH v2 10/10] target-mips: Enable KVM support in build system, James Hogan, 2013/12/16
- [Qemu-devel] [PATCH v2 02/10] hw/mips: Add API to convert KVM guest KSEG0 <-> GPA,
James Hogan <=
- [Qemu-devel] [PATCH v2 06/10] target-mips: Set target page size to 16K in KVM mode, James Hogan, 2013/12/16
- [Qemu-devel] [PATCH v2 09/10] hw/mips: malta: Add KVM support, James Hogan, 2013/12/16
- [Qemu-devel] [PATCH v2 03/10] target-mips: get_physical_address: Add defines for segment bases, James Hogan, 2013/12/16
- [Qemu-devel] [PATCH v2 07/10] target-mips: kvm: Add main KVM support for MIPS, James Hogan, 2013/12/16