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x86_64/mm: map and unmap page tables in subarch_init_memory
Signed-off-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: Hongyan Xia <hongyxia@amazon.com> Reviewed-by: Julien Grall <jgrall@amazon.com> Acked-by: Jan Beulich <jbeulich@suse.com>
This commit is contained in:
Wei Liu authored and Jan Beulich committed
1 parent
93414e42c7
commit
a4dcb4b47d
1 file changed
+6
-6
@@ -852,14 +852,14 @@ void __init subarch_init_memory(void)
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v += n << PAGE_SHIFT )
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{
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n = L2_PAGETABLE_ENTRIES * L1_PAGETABLE_ENTRIES;
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l3e = l4e_to_l3e(idle_pg_table[l4_table_offset(v)])[
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l3_table_offset(v)];
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l3e = l3e_from_l4e(idle_pg_table[l4_table_offset(v)],
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l3_table_offset(v));
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if ( !(l3e_get_flags(l3e) & _PAGE_PRESENT) )
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continue;
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if ( !(l3e_get_flags(l3e) & _PAGE_PSE) )
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{
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n = L1_PAGETABLE_ENTRIES;
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l2e = l3e_to_l2e(l3e)[l2_table_offset(v)];
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l2e = l2e_from_l3e(l3e, l2_table_offset(v));
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if ( !(l2e_get_flags(l2e) & _PAGE_PRESENT) )
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continue;
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m2p_start_mfn = l2e_get_pfn(l2e);
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@@ -878,11 +878,11 @@ void __init subarch_init_memory(void)
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v != RDWR_COMPAT_MPT_VIRT_END;
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v += 1 << L2_PAGETABLE_SHIFT )
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{
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l3e = l4e_to_l3e(idle_pg_table[l4_table_offset(v)])[
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l3_table_offset(v)];
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l3e = l3e_from_l4e(idle_pg_table[l4_table_offset(v)],
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l3_table_offset(v));
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if ( !(l3e_get_flags(l3e) & _PAGE_PRESENT) )
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continue;
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l2e = l3e_to_l2e(l3e)[l2_table_offset(v)];
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l2e = l2e_from_l3e(l3e, l2_table_offset(v));
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if ( !(l2e_get_flags(l2e) & _PAGE_PRESENT) )
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continue;
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m2p_start_mfn = l2e_get_pfn(l2e);
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