[Xen-devel] [PATCH 2/2] Revert "xen/pvh: Update E820 to work with PVH (v2)"

[David Vrabel <david.vrabel@xxxxxxxxxx>]

This reverts commit 9103bb0f8240b2a55aac3ff7ecba9c7dcf66b08b.

Now than xen_memory_setup() is not called for auto-translated guests,
we can remove this commit.

Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
---
 arch/x86/xen/setup.c |   22 ++--------------------
 1 file changed, 2 insertions(+), 20 deletions(-)

diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index d54d686..039b9c5 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -27,7 +27,6 @@
 #include <xen/interface/memory.h>
 #include <xen/interface/physdev.h>
 #include <xen/features.h>
-#include "mmu.h"
 #include "xen-ops.h"
 #include "vdso.h"
 
@@ -82,9 +81,6 @@ static void __init xen_add_extra_mem(u64 start, u64 size)
 
        memblock_reserve(start, size);
 
-       if (xen_feature(XENFEAT_auto_translated_physmap))
-               return;
-
        xen_max_p2m_pfn = PFN_DOWN(start + size);
        for (pfn = PFN_DOWN(start); pfn < xen_max_p2m_pfn; pfn++) {
                unsigned long mfn = pfn_to_mfn(pfn);
@@ -107,7 +103,6 @@ static unsigned long __init xen_do_chunk(unsigned long 
start,
                .domid        = DOMID_SELF
        };
        unsigned long len = 0;
-       int xlated_phys = xen_feature(XENFEAT_auto_translated_physmap);
        unsigned long pfn;
        int ret;
 
@@ -121,7 +116,7 @@ static unsigned long __init xen_do_chunk(unsigned long 
start,
                                continue;
                        frame = mfn;
                } else {
-                       if (!xlated_phys && mfn != INVALID_P2M_ENTRY)
+                       if (mfn != INVALID_P2M_ENTRY)
                                continue;
                        frame = pfn;
                }
@@ -159,13 +154,6 @@ static unsigned long __init xen_do_chunk(unsigned long 
start,
 static unsigned long __init xen_release_chunk(unsigned long start,
                                              unsigned long end)
 {
-       /*
-        * Xen already ballooned out the E820 non RAM regions for us
-        * and set them up properly in EPT.
-        */
-       if (xen_feature(XENFEAT_auto_translated_physmap))
-               return end - start;
-
        return xen_do_chunk(start, end, true);
 }
 
@@ -234,13 +222,7 @@ static void __init xen_set_identity_and_release_chunk(
         * (except for the ISA region which must be 1:1 mapped) to
         * release the refcounts (in Xen) on the original frames.
         */
-
-       /*
-        * PVH E820 matches the hypervisor's P2M which means we need to
-        * account for the proper values of *release and *identity.
-        */
-       for (pfn = start_pfn; !xen_feature(XENFEAT_auto_translated_physmap) &&
-            pfn <= max_pfn_mapped && pfn < end_pfn; pfn++) {
+       for (pfn = start_pfn; pfn <= max_pfn_mapped && pfn < end_pfn; pfn++) {
                pte_t pte = __pte_ma(0);
 
                if (pfn < PFN_UP(ISA_END_ADDRESS))
-- 
1.7.10.4


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