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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-05 17:47:31 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-05 17:47:31 -0400
commit01227a889ed56ae53aeebb9f93be9d54dd8b2de8 (patch)
treed5eba9359a9827e84d4112b84d48c54df5c5acde /arch/arm/mm
parent9e6879460c8edb0cd3c24c09b83d06541b5af0dc (diff)
parentdb6ae6158186a17165ef990bda2895ae7594b039 (diff)
Merge tag 'kvm-3.10-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Gleb Natapov: "Highlights of the updates are: general: - new emulated device API - legacy device assignment is now optional - irqfd interface is more generic and can be shared between arches x86: - VMCS shadow support and other nested VMX improvements - APIC virtualization and Posted Interrupt hardware support - Optimize mmio spte zapping ppc: - BookE: in-kernel MPIC emulation with irqfd support - Book3S: in-kernel XICS emulation (incomplete) - Book3S: HV: migration fixes - BookE: more debug support preparation - BookE: e6500 support ARM: - reworking of Hyp idmaps s390: - ioeventfd for virtio-ccw And many other bug fixes, cleanups and improvements" * tag 'kvm-3.10-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (204 commits) kvm: Add compat_ioctl for device control API KVM: x86: Account for failing enable_irq_window for NMI window request KVM: PPC: Book3S: Add API for in-kernel XICS emulation kvm/ppc/mpic: fix missing unlock in set_base_addr() kvm/ppc: Hold srcu lock when calling kvm_io_bus_read/write kvm/ppc/mpic: remove users kvm/ppc/mpic: fix mmio region lists when multiple guests used kvm/ppc/mpic: remove default routes from documentation kvm: KVM_CAP_IOMMU only available with device assignment ARM: KVM: iterate over all CPUs for CPU compatibility check KVM: ARM: Fix spelling in error message ARM: KVM: define KVM_ARM_MAX_VCPUS unconditionally KVM: ARM: Fix API documentation for ONE_REG encoding ARM: KVM: promote vfp_host pointer to generic host cpu context ARM: KVM: add architecture specific hook for capabilities ARM: KVM: perform HYP initilization for hotplugged CPUs ARM: KVM: switch to a dual-step HYP init code ARM: KVM: rework HYP page table freeing ARM: KVM: enforce maximum size for identity mapped code ARM: KVM: move to a KVM provided HYP idmap ...
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/idmap.c32
1 files changed, 1 insertions, 31 deletions
diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c
index 5ee505c937d1..83cb3ac27095 100644
--- a/arch/arm/mm/idmap.c
+++ b/arch/arm/mm/idmap.c
@@ -8,7 +8,6 @@
8#include <asm/pgtable.h> 8#include <asm/pgtable.h>
9#include <asm/sections.h> 9#include <asm/sections.h>
10#include <asm/system_info.h> 10#include <asm/system_info.h>
11#include <asm/virt.h>
12 11
13pgd_t *idmap_pgd; 12pgd_t *idmap_pgd;
14 13
@@ -83,37 +82,10 @@ static void identity_mapping_add(pgd_t *pgd, const char *text_start,
83 } while (pgd++, addr = next, addr != end); 82 } while (pgd++, addr = next, addr != end);
84} 83}
85 84
86#if defined(CONFIG_ARM_VIRT_EXT) && defined(CONFIG_ARM_LPAE)
87pgd_t *hyp_pgd;
88
89extern char __hyp_idmap_text_start[], __hyp_idmap_text_end[];
90
91static int __init init_static_idmap_hyp(void)
92{
93 hyp_pgd = kzalloc(PTRS_PER_PGD * sizeof(pgd_t), GFP_KERNEL);
94 if (!hyp_pgd)
95 return -ENOMEM;
96
97 pr_info("Setting up static HYP identity map for 0x%p - 0x%p\n",
98 __hyp_idmap_text_start, __hyp_idmap_text_end);
99 identity_mapping_add(hyp_pgd, __hyp_idmap_text_start,
100 __hyp_idmap_text_end, PMD_SECT_AP1);
101
102 return 0;
103}
104#else
105static int __init init_static_idmap_hyp(void)
106{
107 return 0;
108}
109#endif
110
111extern char __idmap_text_start[], __idmap_text_end[]; 85extern char __idmap_text_start[], __idmap_text_end[];
112 86
113static int __init init_static_idmap(void) 87static int __init init_static_idmap(void)
114{ 88{
115 int ret;
116
117 idmap_pgd = pgd_alloc(&init_mm); 89 idmap_pgd = pgd_alloc(&init_mm);
118 if (!idmap_pgd) 90 if (!idmap_pgd)
119 return -ENOMEM; 91 return -ENOMEM;
@@ -123,12 +95,10 @@ static int __init init_static_idmap(void)
123 identity_mapping_add(idmap_pgd, __idmap_text_start, 95 identity_mapping_add(idmap_pgd, __idmap_text_start,
124 __idmap_text_end, 0); 96 __idmap_text_end, 0);
125 97
126 ret = init_static_idmap_hyp();
127
128 /* Flush L1 for the hardware to see this page table content */ 98 /* Flush L1 for the hardware to see this page table content */
129 flush_cache_louis(); 99 flush_cache_louis();
130 100
131 return ret; 101 return 0;
132} 102}
133early_initcall(init_static_idmap); 103early_initcall(init_static_idmap);
134 104