diff options
| author | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2020-06-22 18:21:34 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-06-22 13:45:58 -0400 |
| commit | cae10b5b5bdc53480bd2e985f1e43eb8910e40f8 (patch) | |
| tree | 9a2ee91254e2daebc1e358f7d0011d272ff325ee | |
| parent | a434c431d8eb20f9363a8d74e91f21a8faf13e0f (diff) | |
| download | kvm-unit-tests-cae10b5b5bdc53480bd2e985f1e43eb8910e40f8.tar.gz | |
x86/cstart.S: initialize stack before using it
It seems the 32-bit initialization code uses the stack before actually
initializing it.
Probably the boot loader leaves a reasonable value in the stack pointer so
this issue has not been noticed before.
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-Id: <20200622162141.279716-2-imbrenda@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | x86/cstart.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/x86/cstart.S b/x86/cstart.S index 38ac19b..fa62e09 100644 --- a/x86/cstart.S +++ b/x86/cstart.S @@ -96,13 +96,13 @@ MSR_GS_BASE = 0xc0000101 .globl start start: + mov $stacktop, %esp push %ebx call setup_multiboot call setup_libcflat mov mb_cmdline(%ebx), %eax mov %eax, __args call __setup_args - mov $stacktop, %esp setup_percpu_area call prepare_32 jmpl $8, $start32 |