From: Marcelo Tosatti <[email protected]> test long rmap chains
Signed-off-by: Marcelo Tosatti <[email protected]> Signed-off-by: Avi Kivity <[email protected]> diff --git a/kvm/test/config-x86-common.mak b/kvm/test/config-x86-common.mak index 3ac53a5..00817dc 100644 --- a/kvm/test/config-x86-common.mak +++ b/kvm/test/config-x86-common.mak @@ -65,6 +65,9 @@ $(TEST_DIR)/idt_test.flat: $(cstart.o) $(TEST_DIR)/idt.o $(TEST_DIR)/idt_test.o $(TEST_DIR)/xsave.flat: $(cstart.o) $(TEST_DIR)/idt.o $(TEST_DIR)/xsave.o +$(TEST_DIR)/rmap_chain.flat: $(cstart.o) $(TEST_DIR)/rmap_chain.o \ + $(TEST_DIR)/print.o $(TEST_DIR)/vm.o + arch_clean: $(RM) $(TEST_DIR)/*.o $(TEST_DIR)/*.flat \ $(TEST_DIR)/.*.d $(TEST_DIR)/lib/.*.d $(TEST_DIR)/lib/*.o diff --git a/kvm/test/config-x86_64.mak b/kvm/test/config-x86_64.mak index 2da2906..3ffbcc1 100644 --- a/kvm/test/config-x86_64.mak +++ b/kvm/test/config-x86_64.mak @@ -6,6 +6,6 @@ CFLAGS += -D__x86_64__ tests = $(TEST_DIR)/access.flat $(TEST_DIR)/apic.flat \ $(TEST_DIR)/emulator.flat $(TEST_DIR)/idt_test.flat \ - $(TEST_DIR)/xsave.flat + $(TEST_DIR)/xsave.flat $(TEST_DIR)/rmap_chain.flat include config-x86-common.mak diff --git a/kvm/test/x86/rmap_chain.c b/kvm/test/x86/rmap_chain.c new file mode 100644 index 0000000..9add9b8 --- /dev/null +++ b/kvm/test/x86/rmap_chain.c @@ -0,0 +1,53 @@ +/* test long rmap chains */ + +#include "libcflat.h" +#include "vm.h" +#include "smp.h" + +void print(const char *s); + +static unsigned int inl(unsigned short port) +{ + unsigned int val; + asm volatile ("inl %w1, %0":"=a" (val):"Nd" (port)); + return val; +} + +int main (void) +{ + int i; + int nr_pages; + void *target_page, *virt_addr; + + setup_vm(); + + nr_pages = inl(0xd1) / PAGE_SIZE; + nr_pages -= 1000; + target_page = alloc_page(); + + virt_addr = (void *) 0xfffffa000; + for (i = 0; i < nr_pages; i++) { + install_page(phys_to_virt(read_cr3()), virt_to_phys(target_page), + virt_addr); + virt_addr += PAGE_SIZE; + } + printf("created %d mappings\n", nr_pages); + + virt_addr = (void *) 0xfffffa000; + for (i = 0; i < nr_pages; i++) { + unsigned long *touch = virt_addr; + + *touch = 0; + virt_addr += PAGE_SIZE; + } + printf("instantiated mappings\n"); + + virt_addr += PAGE_SIZE; + install_pte(phys_to_virt(read_cr3()), 1, virt_addr, + 0 | PTE_PRESENT | PTE_WRITE, target_page); + + *(unsigned long *)virt_addr = 0; + printf("PASS\n"); + + return 0; +} -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
