From: Ian Campbell <ian.campbell@citrix.com>
Date: Thu, 18 Sep 2014 00:09:50 +0000 (+0100)
Subject: xen: arm: move setup_virt_paging to p2m.[ch] from mm.[ch]
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~4386
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22?a=commitdiff_plain;h=e0994a4b6d6afc23019dbafaa326acb70416a2dc;p=xen.git

xen: arm: move setup_virt_paging to p2m.[ch] from mm.[ch]

This file is where most of the P2M logic lives and this function will
eventually need to poke at some internals, so move it.

This is pure code motion.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
---

diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
index 0294fa8e41..5cd4e9982f 100644
--- a/xen/arch/arm/mm.c
+++ b/xen/arch/arm/mm.c
@@ -411,24 +411,6 @@ void __init arch_init_memory(void)
     BUG_ON(IS_ERR(dom_cow));
 }
 
-void __cpuinit setup_virt_paging(void)
-{
-    /* Setup Stage 2 address translation */
-    /* SH0=11 (Inner-shareable)
-     * ORGN0=IRGN0=01 (Normal memory, Write-Back Write-Allocate Cacheable)
-     * SL0=01 (Level-1)
-     * ARVv7: T0SZ=(1)1000 = -8 (32-(-8) = 40 bit physical addresses)
-     * ARMv8: T0SZ=01 1000 = 24 (64-24   = 40 bit physical addresses)
-     *        PS=010 == 40 bits
-     */
-#ifdef CONFIG_ARM_32
-    WRITE_SYSREG32(0x80003558, VTCR_EL2);
-#else
-    WRITE_SYSREG32(0x80023558, VTCR_EL2);
-#endif
-    isb();
-}
-
 static inline lpae_t pte_of_xenaddr(vaddr_t va)
 {
     paddr_t ma = va + phys_offset;
diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
index fa64aa5555..a1fef0fad7 100644
--- a/xen/arch/arm/p2m.c
+++ b/xen/arch/arm/p2m.c
@@ -1138,6 +1138,24 @@ err:
     return page;
 }
 
+void __cpuinit setup_virt_paging(void)
+{
+    /* Setup Stage 2 address translation */
+    /* SH0=11 (Inner-shareable)
+     * ORGN0=IRGN0=01 (Normal memory, Write-Back Write-Allocate Cacheable)
+     * SL0=01 (Level-1)
+     * ARVv7: T0SZ=(1)1000 = -8 (32-(-8) = 40 bit physical addresses)
+     * ARMv8: T0SZ=01 1000 = 24 (64-24   = 40 bit physical addresses)
+     *        PS=010 == 40 bits
+     */
+#ifdef CONFIG_ARM_32
+    WRITE_SYSREG32(0x80003558, VTCR_EL2);
+#else
+    WRITE_SYSREG32(0x80023558, VTCR_EL2);
+#endif
+    isb();
+}
+
 /*
  * Local variables:
  * mode: C
diff --git a/xen/include/asm-arm/mm.h b/xen/include/asm-arm/mm.h
index 9fa80a4f7e..840a80591b 100644
--- a/xen/include/asm-arm/mm.h
+++ b/xen/include/asm-arm/mm.h
@@ -155,8 +155,6 @@ extern void remove_early_mappings(void);
 extern int __cpuinit init_secondary_pagetables(int cpu);
 /* Switch secondary CPUS to its own pagetables and finalise MMU setup */
 extern void __cpuinit mmu_init_secondary_cpu(void);
-/* Second stage paging setup, to be called on all CPUs */
-extern void __cpuinit setup_virt_paging(void);
 /* Set up the xenheap: up to 1GB of contiguous, always-mapped memory.
  * Base must be 32MB aligned and size a multiple of 32MB. */
 extern void setup_xenheap_mappings(unsigned long base_mfn, unsigned long nr_mfns);
diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h
index 5bf79469a1..999f20a70a 100644
--- a/xen/include/asm-arm/p2m.h
+++ b/xen/include/asm-arm/p2m.h
@@ -72,6 +72,9 @@ typedef enum {
 /* Initialise vmid allocator */
 void p2m_vmid_allocator_init(void);
 
+/* Second stage paging setup, to be called on all CPUs */
+void __cpuinit setup_virt_paging(void);
+
 /* Init the datastructures for later use by the p2m code */
 int p2m_init(struct domain *d);