[PATCH kvm-unit-test] get memory size from fwcfg

[Gleb Natapov <gleb@xxxxxxxxxx>]

Upstream test device does not implement port 0xd1.

Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
diff --git a/lib/x86/vm.c b/lib/x86/vm.c
index 71b70fd..2852c6c 100644
--- a/lib/x86/vm.c
+++ b/lib/x86/vm.c
@@ -1,3 +1,4 @@
+#include "fwcfg.h"
 #include "vm.h"
 #include "libcflat.h"
 
@@ -185,16 +186,9 @@ static void setup_mmu(unsigned long len)
     printf("cr4 = %x\n", read_cr4());
 }
 
-static unsigned int inl(unsigned short port)
-{
-    unsigned int val;
-    asm volatile("inl %w1, %0" : "=a"(val) : "Nd"(port));
-    return val;
-}
-
 void setup_vm()
 {
-    end_of_memory = inl(0xd1);
+    end_of_memory = fwcfg_get_u64(FW_CFG_RAM_SIZE);
     free_memory(&edata, end_of_memory - (unsigned long)&edata);
     setup_mmu(end_of_memory);
 }
diff --git a/x86/rmap_chain.c b/x86/rmap_chain.c
index 9add9b8..0df1bcb 100644
--- a/x86/rmap_chain.c
+++ b/x86/rmap_chain.c
@@ -1,6 +1,7 @@
 /* test long rmap chains */
 
 #include "libcflat.h"
+#include "fwcfg.h"
 #include "vm.h"
 #include "smp.h"
 
@@ -21,7 +22,7 @@ int main (void)
 
     setup_vm();
 
-    nr_pages = inl(0xd1) / PAGE_SIZE;
+    nr_pages = fwcfg_get_u64(FW_CFG_RAM_SIZE) / PAGE_SIZE;
     nr_pages -= 1000;
     target_page = alloc_page();
 
--
			Gleb.
--
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