HV: elf_loader: Fix copy gpa bug in load elf32

The elf images can't be loaded correctly because
the elf_loader copy_to_gpa with wrong size.
The p_filesz and p_memsz both belong to elf32_prog_entry,
this data structure describes segments loaded in ram.
p_filesz means size of segment in file and p_memsz
means size of segment in memory.
ELF loader should copy elf_img to gpa with the
size of p_prg_tbl_head32->p_filesz.

Tracked-On: projectacrn#8642

Signed-off-by: Zhang Chen <[email protected]>
Signed-off-by: Victor Sun <[email protected]>
Reviewed-by: Junjie Mao <[email protected]>

hypervisor/boot/guest/elf_loader.c

@@ -173,7 +173,7 @@ static void *do_load_elf32(struct acrn_vm *vm)
 				 * We assume that the guest elf can put segments to valid gpa.
 				 */
 				(void)copy_to_gpa(vm, p_elf_img + p_prg_tbl_head32->p_offset,
-					p_prg_tbl_head32->p_paddr, p_prg_tbl_head32->p_memsz);
+					p_prg_tbl_head32->p_paddr, p_prg_tbl_head32->p_filesz);
 				/* copy_to_gpa has it's stac/clac inside. So call stac again here. */
 				stac();
 			}