diff options
| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2023-01-30 16:53:54 +0300 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2023-02-03 03:31:25 +0300 |
| commit | 1e70c680375aa33cca97bff0bca68c0f82f5023c (patch) | |
| tree | d73e781b56e3cf66517d1ad079257aa4b1d9a628 /arch/s390/kernel/mcount.S | |
| parent | 8de62af018cc9262649d7688f7eb1409b2d8f594 (diff) | |
| download | linux-1e70c680375aa33cca97bff0bca68c0f82f5023c.tar.xz | |
x86/tdx: Do not corrupt frame-pointer in __tdx_hypercall()
If compiled with CONFIG_FRAME_POINTER=y, objtool is not happy that
__tdx_hypercall() messes up RBP:
objtool: __tdx_hypercall+0x7f: return with modified stack frame
Rework the function to store TDX_HCALL_ flags on stack instead of RBP.
[ dhansen: minor changelog tweaks ]
Fixes: c30c4b2555ba ("x86/tdx: Refactor __tdx_hypercall() to allow pass down more arguments")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/202301290255.buUBs99R-lkp@intel.com
Link: https://lore.kernel.org/all/20230130135354.27674-1-kirill.shutemov%40linux.intel.com
Diffstat (limited to 'arch/s390/kernel/mcount.S')
0 files changed, 0 insertions, 0 deletions