[Xen-changelog] [xen master] Revert "expand x86 arch_shared_info to support linear p2m list"

[patchbot@xxxxxxx]

commit 283adf9f0bb0f619bc42e8c5573a874496649805
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Wed Jan 7 14:49:02 2015 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Jan 7 14:49:02 2015 +0100

    Revert "expand x86 arch_shared_info to support linear p2m list"
    
    This reverts commit dac6d3b1a479f5c33b6a5233944e43b6c5bf2bb7,
    breaking the tools part of the build.
---
 xen/include/public/arch-x86/xen.h |   36 +++---------------------------------
 1 files changed, 3 insertions(+), 33 deletions(-)

diff --git a/xen/include/public/arch-x86/xen.h 
b/xen/include/public/arch-x86/xen.h
index c5e880b..f35804b 100644
--- a/xen/include/public/arch-x86/xen.h
+++ b/xen/include/public/arch-x86/xen.h
@@ -220,41 +220,11 @@ typedef struct vcpu_guest_context vcpu_guest_context_t;
 DEFINE_XEN_GUEST_HANDLE(vcpu_guest_context_t);
 
 struct arch_shared_info {
-    /*
-     * Number of valid entries in the p2m table(s) anchored at
-     * pfn_to_mfn_frame_list_list and/or p2m_vaddr.
-     */
-    unsigned long max_pfn;
-    /*
-     * Frame containing list of mfns containing list of mfns containing p2m.
-     * A value of 0 indicates it has not yet been set up, ~0 indicates it has
-     * been set to invalid e.g. due to the p2m being too large for the 3-level
-     * p2m tree. In this case the linear mapper p2m list anchored at p2m_vaddr
-     * is to be used.
-     */
+    unsigned long max_pfn;                  /* max pfn that appears in table */
+    /* Frame containing list of mfns containing list of mfns containing p2m. */
     xen_pfn_t     pfn_to_mfn_frame_list_list;
     unsigned long nmi_reason;
-    /*
-     * Following three fields are valid if p2m_cr3 contains a value different
-     * from 0.
-     * p2m_cr3 is the root of the address space where p2m_vaddr is valid.
-     * p2m_cr3 is in the same format as a cr3 value in the vcpu register state
-     * and holds the folded machine frame number (via xen_pfn_to_cr3) of a
-     * L3 or L4 page table.
-     * p2m_vaddr holds the virtual address of the linear p2m list. All entries
-     * in the range [0...max_pfn[ are accessible via this pointer.
-     * p2m_generation will be incremented by the guest before and after each
-     * change of the mappings of the p2m list. p2m_generation starts at 0 and
-     * a value with the least significant bit set indicates that a mapping
-     * update is in progress. This allows guest external software (e.g. in 
Dom0)
-     * to verify that read mappings are consistent and whether they have 
changed
-     * since the last check.
-     * Modifying a p2m element in the linear p2m list is allowed via an atomic
-     * write only.
-     */
-    unsigned long p2m_cr3;         /* cr3 value of the p2m address space */
-    unsigned long p2m_vaddr;       /* virtual address of the p2m list */
-    unsigned long p2m_generation;  /* generation count of p2m mapping */
+    uint64_t pad[32];
 };
 typedef struct arch_shared_info arch_shared_info_t;
 
--
generated by git-patchbot for /home/xen/git/xen.git#master

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