Index: ELF/Config.h
===================================================================
--- ELF/Config.h
+++ ELF/Config.h
@@ -132,11 +132,13 @@
   UnresolvedPolicy UnresolvedSymbols;
   BuildIdKind BuildId = BuildIdKind::None;
   ELFKind EKind = ELFNoneKind;
+  uint64_t CommonPageSize;
   uint16_t DefaultSymbolVersion = llvm::ELF::VER_NDX_GLOBAL;
   uint16_t EMachine = llvm::ELF::EM_NONE;
   uint64_t EntryAddr = 0;
   uint64_t ImageBase;
-  uint64_t ZStackSize = -1;
+  uint64_t MaxPageSize;
+  uint64_t ZStackSize;
   unsigned LtoJobs;
   unsigned LtoO;
   unsigned Optimize;
Index: ELF/Driver.cpp
===================================================================
--- ELF/Driver.cpp
+++ ELF/Driver.cpp
@@ -264,15 +264,20 @@
   return false;
 }
 
-static Optional<StringRef>
-getZOptionValue(opt::InputArgList &Args, StringRef Key) {
+static uint64_t
+getZOptionValue(opt::InputArgList &Args, StringRef Key, uint64_t Default) {
   for (auto *Arg : Args.filtered(OPT_z)) {
     StringRef Value = Arg->getValue();
     size_t Pos = Value.find("=");
-    if (Pos != StringRef::npos && Key == Value.substr(0, Pos))
-      return Value.substr(Pos + 1);
+    if (Pos != StringRef::npos && Key == Value.substr(0, Pos)) {
+      Value = Value.substr(Pos + 1);
+      uint64_t Result;
+      if (Value.getAsInteger(0, Result))
+        error("invalid " + Key + ": " + Value);
+      return Result;
+    }
   }
-  return None;
+  return Default;
 }
 
 void LinkerDriver::main(ArrayRef<const char *> ArgsArr) {
@@ -492,9 +497,7 @@
   if (!Config->Relocatable)
     Config->Strip = getStripOption(Args);
 
-  if (Optional<StringRef> Value = getZOptionValue(Args, "stack-size"))
-    if (Value->getAsInteger(0, Config->ZStackSize))
-      error("invalid stack size: " + *Value);
+  Config->ZStackSize = getZOptionValue(Args, "stack-size", -1);
 
   // Config->Pic is true if we are generating position-independent code.
   Config->Pic = Config->Pie || Config->Shared;
@@ -657,6 +660,17 @@
     Config->ImageBase = Config->Pic ? 0 : Target->DefaultImageBase;
   }
 
+  // Initialize Config->MaxPageSize and Config->CommonPageSize. The default
+  // value is defined by the target, but it can be overriden using the option.
+  Config->MaxPageSize =
+      getZOptionValue(Args, "max-page-size", Target->MaxPageSize);
+  if (!isPowerOf2_64(Config->MaxPageSize))
+    error("max-page-size: value isn't a power of 2");
+  Config->CommonPageSize =
+      getZOptionValue(Args, "common-page-size", Target->PageSize);
+  if (!isPowerOf2_64(Config->CommonPageSize))
+    error("common-page-size: value isn't a power of 2");
+
   // Add all files to the symbol table. After this, the symbol table
   // contains all known names except a few linker-synthesized symbols.
   for (InputFile *F : Files)
Index: ELF/LinkerScript.cpp
===================================================================
--- ELF/LinkerScript.cpp
+++ ELF/LinkerScript.cpp
@@ -1470,9 +1470,9 @@
 
 uint64_t static getConstant(StringRef S) {
   if (S == "COMMONPAGESIZE")
-    return Target->PageSize;
+    return Config->CommonPageSize;
   if (S == "MAXPAGESIZE")
-    return Target->MaxPageSize;
+    return Config->MaxPageSize;
   error("unknown constant: " + S);
   return 0;
 }
Index: test/ELF/linkerscript/page-size.s
===================================================================
--- /dev/null
+++ test/ELF/linkerscript/page-size.s
@@ -0,0 +1,32 @@
+# REQUIRES: x86
+# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
+
+# RUN: echo "SECTIONS { \
+# RUN:         symbol1 = CONSTANT(MAXPAGESIZE); \
+# RUN:         symbol2 = CONSTANT(COMMONPAGESIZE); \
+# RUN:       }" > %t.script
+# RUN: ld.lld -z max-page-size=0x1000 -z common-page-size=0x2000 -o %t1 --script %t.script %t
+# RUN: llvm-objdump -t %t1 | FileCheck %s
+
+# RUN: not ld.lld -z max-page-size=0x1001 -o %t1 --script %t.script %t 2>&1 \
+# RUN:  | FileCheck -check-prefix=ERR1 %s
+# ERR1: max-page-size: value isn't a power of 2
+
+# RUN: not ld.lld -z max-page-size=-0x1000 -o %t1 --script %t.script %t 2>&1 \
+# RUN:  | FileCheck -check-prefix=ERR2 %s
+# ERR2: invalid max-page-size: -0x1000
+
+# RUN: not ld.lld -z common-page-size=0x1001 -o %t1 --script %t.script %t 2>&1 \
+# RUN:  | FileCheck -check-prefix=ERR3 %s
+# ERR3: common-page-size: value isn't a power of 2
+
+# RUN: not ld.lld -z common-page-size=-0x1000 -o %t1 --script %t.script %t 2>&1 \
+# RUN:  | FileCheck -check-prefix=ERR4 %s
+# ERR4: invalid common-page-size: -0x1000
+
+# CHECK: 0000000000001000 *ABS* 00000000 symbol1
+# CHECK: 0000000000002000 *ABS* 00000000 symbol2
+
+.global _start
+_start:
+ nop