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authorPaolo Bonzini <pbonzini@redhat.com>2013-10-28 13:15:55 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2013-10-28 13:15:55 +0100
commit5bb3398dd2df2c26261b2156c98cf4c95b3f91fe (patch)
tree526d914e0e1cc62249b4a0d2fea31558cc17fcd7 /arch/arm64
parente0230e1327fb862c9b6cde24ae62d55f9db62c9b (diff)
parent9b5fdb9781f74fb15827e465bfb5aa63211953c8 (diff)
downloadblackbird-op-linux-5bb3398dd2df2c26261b2156c98cf4c95b3f91fe.tar.gz
blackbird-op-linux-5bb3398dd2df2c26261b2156c98cf4c95b3f91fe.zip
Merge tag 'kvm-arm-for-3.13-2' of git://git.linaro.org/people/cdall/linux-kvm-arm into kvm-queue
Updates for KVM/ARM, take 2 including: - Transparent Huge Pages and hugetlbfs support for KVM/ARM - Yield CPU when guest executes WFE to speed up CPU overcommit
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/include/asm/kvm_mmu.h12
-rw-r--r--arch/arm64/include/asm/pgtable-hwdef.h2
2 files changed, 11 insertions, 3 deletions
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h
index efe609c6a3c9..680f74e67497 100644
--- a/arch/arm64/include/asm/kvm_mmu.h
+++ b/arch/arm64/include/asm/kvm_mmu.h
@@ -91,6 +91,7 @@ int kvm_mmu_init(void);
void kvm_clear_hyp_idmap(void);
#define kvm_set_pte(ptep, pte) set_pte(ptep, pte)
+#define kvm_set_pmd(pmdp, pmd) set_pmd(pmdp, pmd)
static inline bool kvm_is_write_fault(unsigned long esr)
{
@@ -116,13 +117,18 @@ static inline void kvm_set_s2pte_writable(pte_t *pte)
pte_val(*pte) |= PTE_S2_RDWR;
}
+static inline void kvm_set_s2pmd_writable(pmd_t *pmd)
+{
+ pmd_val(*pmd) |= PMD_S2_RDWR;
+}
+
struct kvm;
-static inline void coherent_icache_guest_page(struct kvm *kvm, gfn_t gfn)
+static inline void coherent_icache_guest_page(struct kvm *kvm, hva_t hva,
+ unsigned long size)
{
if (!icache_is_aliasing()) { /* PIPT */
- unsigned long hva = gfn_to_hva(kvm, gfn);
- flush_icache_range(hva, hva + PAGE_SIZE);
+ flush_icache_range(hva, hva + size);
} else if (!icache_is_aivivt()) { /* non ASID-tagged VIVT */
/* any kind of VIPT cache */
__flush_icache_all();
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h
index d57e66845c86..755f86143320 100644
--- a/arch/arm64/include/asm/pgtable-hwdef.h
+++ b/arch/arm64/include/asm/pgtable-hwdef.h
@@ -85,6 +85,8 @@
#define PTE_S2_RDONLY (_AT(pteval_t, 1) << 6) /* HAP[2:1] */
#define PTE_S2_RDWR (_AT(pteval_t, 3) << 6) /* HAP[2:1] */
+#define PMD_S2_RDWR (_AT(pmdval_t, 3) << 6) /* HAP[2:1] */
+
/*
* Memory Attribute override for Stage-2 (MemAttr[3:0])
*/
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