From: Suzuki K Poulose <suzuki.poulose@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
marc.zyngier@arm.com, cdall@kernel.org, eric.auger@redhat.com,
suzuki.poulose@arm.com, will.deacon@arm.com, dave.martin@arm.com,
peter.maydell@linaro.org, pbonzini@redhat.com,
rkrcmar@redhat.com, julien.grall@arm.com,
linux-kernel@vger.kernel.org
Subject: [kvmtool PATCH v6 21/18] kvmtool: arm64: Switch memory layout
Date: Wed, 26 Sep 2018 17:32:57 +0100 [thread overview]
Message-ID: <20180926163258.20218-22-suzuki.poulose@arm.com> (raw)
In-Reply-To: <20180926163258.20218-1-suzuki.poulose@arm.com>
If the guest wants to use a larger physical address space place
the RAM at upper half of the address space. Otherwise, it uses the
default layout.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
arm/aarch32/include/kvm/kvm-arch.h | 6 ++++--
arm/aarch64/include/kvm/kvm-arch.h | 15 ++++++++++++---
arm/include/arm-common/kvm-arch.h | 11 ++++++-----
arm/kvm.c | 2 +-
4 files changed, 23 insertions(+), 11 deletions(-)
diff --git a/arm/aarch32/include/kvm/kvm-arch.h b/arm/aarch32/include/kvm/kvm-arch.h
index cd31e72..bcd382b 100644
--- a/arm/aarch32/include/kvm/kvm-arch.h
+++ b/arm/aarch32/include/kvm/kvm-arch.h
@@ -3,8 +3,10 @@
#define ARM_KERN_OFFSET(...) 0x8000
-#define ARM_MAX_MEMORY(...) ARM_LOMAP_MAX_MEMORY
-
#include "arm-common/kvm-arch.h"
+#define ARM_MAX_MEMORY(...) ARM32_MAX_MEMORY
+#define ARM_MEMORY_AREA(...) ARM32_MEMORY_AREA
+
+
#endif /* KVM__KVM_ARCH_H */
diff --git a/arm/aarch64/include/kvm/kvm-arch.h b/arm/aarch64/include/kvm/kvm-arch.h
index 9de623a..bad35b9 100644
--- a/arm/aarch64/include/kvm/kvm-arch.h
+++ b/arm/aarch64/include/kvm/kvm-arch.h
@@ -1,14 +1,23 @@
#ifndef KVM__KVM_ARCH_H
#define KVM__KVM_ARCH_H
+#include "arm-common/kvm-arch.h"
+
+#define ARM64_MEMORY_AREA(phys_shift) (1UL << (phys_shift - 1))
+#define ARM64_MAX_MEMORY(phys_shift) \
+ ((1ULL << (phys_shift)) - ARM64_MEMORY_AREA(phys_shift))
+
+#define ARM_MEMORY_AREA(kvm) ((kvm)->cfg.arch.aarch32_guest ? \
+ ARM32_MEMORY_AREA : \
+ ARM64_MEMORY_AREA(kvm->cfg.arch.phys_shift))
+
#define ARM_KERN_OFFSET(kvm) ((kvm)->cfg.arch.aarch32_guest ? \
0x8000 : \
0x80000)
#define ARM_MAX_MEMORY(kvm) ((kvm)->cfg.arch.aarch32_guest ? \
- ARM_LOMAP_MAX_MEMORY : \
- ARM_HIMAP_MAX_MEMORY)
+ ARM32_MAX_MEMORY : \
+ ARM64_MAX_MEMORY(kvm->cfg.arch.phys_shift))
-#include "arm-common/kvm-arch.h"
#endif /* KVM__KVM_ARCH_H */
diff --git a/arm/include/arm-common/kvm-arch.h b/arm/include/arm-common/kvm-arch.h
index b9d486d..b29b4b1 100644
--- a/arm/include/arm-common/kvm-arch.h
+++ b/arm/include/arm-common/kvm-arch.h
@@ -6,14 +6,15 @@
#include <linux/types.h>
#include "arm-common/gic.h"
-
#define ARM_IOPORT_AREA _AC(0x0000000000000000, UL)
#define ARM_MMIO_AREA _AC(0x0000000000010000, UL)
#define ARM_AXI_AREA _AC(0x0000000040000000, UL)
-#define ARM_MEMORY_AREA _AC(0x0000000080000000, UL)
-#define ARM_LOMAP_MAX_MEMORY ((1ULL << 32) - ARM_MEMORY_AREA)
-#define ARM_HIMAP_MAX_MEMORY ((1ULL << 40) - ARM_MEMORY_AREA)
+#define ARM32_MEMORY_AREA _AC(0x0000000080000000, UL)
+#define ARM32_MAX_MEMORY ((1ULL << 32) - ARM32_MEMORY_AREA)
+
+#define ARM_IOMEM_AREA_END ARM32_MEMORY_AREA
+
#define ARM_GIC_DIST_BASE (ARM_AXI_AREA - ARM_GIC_DIST_SIZE)
#define ARM_GIC_CPUI_BASE (ARM_GIC_DIST_BASE - ARM_GIC_CPUI_SIZE)
@@ -24,7 +25,7 @@
#define ARM_IOPORT_SIZE (ARM_MMIO_AREA - ARM_IOPORT_AREA)
#define ARM_VIRTIO_MMIO_SIZE (ARM_AXI_AREA - (ARM_MMIO_AREA + ARM_GIC_SIZE))
#define ARM_PCI_CFG_SIZE (1ULL << 24)
-#define ARM_PCI_MMIO_SIZE (ARM_MEMORY_AREA - \
+#define ARM_PCI_MMIO_SIZE (ARM_IOMEM_AREA_END - \
(ARM_AXI_AREA + ARM_PCI_CFG_SIZE))
#define KVM_IOPORT_AREA ARM_IOPORT_AREA
diff --git a/arm/kvm.c b/arm/kvm.c
index b824f63..eac2ad2 100644
--- a/arm/kvm.c
+++ b/arm/kvm.c
@@ -30,7 +30,7 @@ void kvm__init_ram(struct kvm *kvm)
u64 phys_start, phys_size;
void *host_mem;
- phys_start = ARM_MEMORY_AREA;
+ phys_start = ARM_MEMORY_AREA(kvm);
phys_size = kvm->ram_size;
host_mem = kvm->ram_start;
--
2.19.0
next prev parent reply other threads:[~2018-09-26 16:34 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-26 16:32 [PATCH v6 00/18] kvm: arm64: Dynamic IPA and 52bit IPA Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 01/18] kvm: arm/arm64: Fix stage2_flush_memslot for 4 level page table Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 02/18] kvm: arm/arm64: Remove spurious WARN_ON Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 03/18] kvm: arm64: Add helper for loading the stage2 setting for a VM Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 04/18] arm64: Add a helper for PARange to physical shift conversion Suzuki K Poulose
2018-10-01 12:05 ` Catalin Marinas
2018-09-26 16:32 ` [PATCH v6 05/18] kvm: arm64: Clean up VTCR_EL2 initialisation Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 06/18] kvm: arm/arm64: Allow arch specific configurations for VM Suzuki K Poulose
2018-09-28 17:27 ` Marc Zyngier
2018-09-29 8:30 ` Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 07/18] kvm: arm64: Configure VTCR_EL2 per VM Suzuki K Poulose
2018-10-02 7:48 ` Auger Eric
2018-09-26 16:32 ` [PATCH v6 08/18] kvm: arm/arm64: Prepare for VM specific stage2 translations Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 09/18] kvm: arm64: Prepare for dynamic stage2 page table layout Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 10/18] kvm: arm64: Make stage2 page table layout dynamic Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 11/18] kvm: arm64: Dynamic configuration of VTTBR mask Suzuki K Poulose
2018-10-02 7:54 ` Auger Eric
2018-09-26 16:32 ` [PATCH v6 12/18] kvm: arm64: Configure VTCR_EL2.SL0 per VM Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 13/18] kvm: arm64: Switch to per VM IPA limit Suzuki K Poulose
2018-10-02 7:58 ` Auger Eric
2018-09-26 16:32 ` [PATCH v6 14/18] vgic: Add support for 52bit guest physical address Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 15/18] kvm: arm64: Add 52bit support for PAR to HPFAR conversoin Suzuki K Poulose
2018-09-26 16:32 ` [PATCH v6 16/18] kvm: arm64: Set a limit on the IPA size Suzuki K Poulose
2018-10-02 8:20 ` Auger Eric
2018-09-26 16:32 ` [PATCH v6 17/18] kvm: arm64: Limit the minimum number of page table levels Suzuki K Poulose
2018-10-02 8:22 ` Auger Eric
2018-09-26 16:32 ` [PATCH v6 18/18] kvm: arm64: Allow tuning the physical address size for VM Suzuki K Poulose
2018-10-02 8:37 ` Auger Eric
2018-10-31 14:22 ` Christoffer Dall
2018-10-31 17:55 ` Suzuki K Poulose
2018-11-01 8:36 ` Christoffer Dall
2018-11-01 9:32 ` Suzuki K Poulose
2018-09-26 16:32 ` [kvmtool PATCH v6 19/18] kvmtool: Allow backends to run checks on the KVM device fd Suzuki K Poulose
2018-09-26 16:32 ` [kvmtool PATCH v6 20/18] kvmtool: arm64: Add support for guest physical address size Suzuki K Poulose
2018-09-26 16:32 ` Suzuki K Poulose [this message]
2018-09-26 16:32 ` [kvmtool PATCH v6 22/18] kvmtool: arm: Add support for creating VM with PA size Suzuki K Poulose
2018-10-01 14:13 ` Marc Zyngier
2018-10-04 8:40 ` [PATCH v6 00/18] kvm: arm64: Dynamic IPA and 52bit IPA Auger Eric
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