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authorChristophe Leroy <christophe.leroy@csgroup.eu>2021-06-03 08:41:38 +0000
committerMichael Ellerman <mpe@ellerman.id.au>2021-06-17 00:09:08 +1000
commit7235bb3593781ed022d0714a73c2c0d8eb8a835f (patch)
tree73e0a356232dd321befd6264fa748321f7ba3287
parent91bb30822a2e1d7900f9f42e9e92647a9015f979 (diff)
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powerpc/32s: move CTX_TO_VSID() into mmu-hash.h
In order to reuse it in switch_mmu_context(), this patch moves CTX_TO_VSID() macro into asm/book3s/32/mmu-hash.h Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/26b36ef2939234a04b37baf6ffe50cba81f5d1b7.1622708530.git.christophe.leroy@csgroup.eu
-rw-r--r--arch/powerpc/include/asm/book3s/32/mmu-hash.h10
-rw-r--r--arch/powerpc/kvm/book3s_32_mmu_host.c3
-rw-r--r--arch/powerpc/mm/book3s32/mmu_context.c13
3 files changed, 10 insertions, 16 deletions
diff --git a/arch/powerpc/include/asm/book3s/32/mmu-hash.h b/arch/powerpc/include/asm/book3s/32/mmu-hash.h
index cc0284bbac86..583388399b1b 100644
--- a/arch/powerpc/include/asm/book3s/32/mmu-hash.h
+++ b/arch/powerpc/include/asm/book3s/32/mmu-hash.h
@@ -67,6 +67,16 @@ struct ppc_bat {
#ifndef __ASSEMBLY__
/*
+ * This macro defines the mapping from contexts to VSIDs (virtual
+ * segment IDs). We use a skew on both the context and the high 4 bits
+ * of the 32-bit virtual address (the "effective segment ID") in order
+ * to spread out the entries in the MMU hash table. Note, if this
+ * function is changed then hash functions will have to be
+ * changed to correspond.
+ */
+#define CTX_TO_VSID(c, id) ((((c) * (897 * 16)) + (id * 0x111)) & 0xffffff)
+
+/*
* Hardware Page Table Entry
* Note that the xpn and x bitfields are used only by processors that
* support extended addressing; otherwise, those bits are reserved.
diff --git a/arch/powerpc/kvm/book3s_32_mmu_host.c b/arch/powerpc/kvm/book3s_32_mmu_host.c
index e8e7b2c530d1..4b3a8d80cfa3 100644
--- a/arch/powerpc/kvm/book3s_32_mmu_host.c
+++ b/arch/powerpc/kvm/book3s_32_mmu_host.c
@@ -353,9 +353,6 @@ void kvmppc_mmu_destroy_pr(struct kvm_vcpu *vcpu)
preempt_enable();
}
-/* From mm/mmu_context_hash32.c */
-#define CTX_TO_VSID(c, id) ((((c) * (897 * 16)) + (id * 0x111)) & 0xffffff)
-
int kvmppc_mmu_init_pr(struct kvm_vcpu *vcpu)
{
struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu);
diff --git a/arch/powerpc/mm/book3s32/mmu_context.c b/arch/powerpc/mm/book3s32/mmu_context.c
index 218996e40a8e..c949363f315f 100644
--- a/arch/powerpc/mm/book3s32/mmu_context.c
+++ b/arch/powerpc/mm/book3s32/mmu_context.c
@@ -39,19 +39,6 @@
#define LAST_CONTEXT 32767
#define FIRST_CONTEXT 1
-/*
- * This function defines the mapping from contexts to VSIDs (virtual
- * segment IDs). We use a skew on both the context and the high 4 bits
- * of the 32-bit virtual address (the "effective segment ID") in order
- * to spread out the entries in the MMU hash table. Note, if this
- * function is changed then arch/ppc/mm/hashtable.S will have to be
- * changed to correspond.
- *
- *
- * CTX_TO_VSID(ctx, va) (((ctx) * (897 * 16) + ((va) >> 28) * 0x111) \
- * & 0xffffff)
- */
-
static unsigned long next_mmu_context;
static unsigned long context_map[LAST_CONTEXT / BITS_PER_LONG + 1];