Cc: stable@vger.kernel.org # v5.11+ Fixes: e7e0545299d8 ("x86/sgx: Initialize metadata for Enclave Page Cache (EPC) sections") Reported-by: kernel test robot lkp@intel.com Closes: https://lore.kernel.org/oe-kbuild-all/202308221542.11UpkVfp-lkp@intel.com/ Signed-off-by: Jarkko Sakkinen jarkko@kernel.org --- arch/x86/kernel/cpu/sgx/main.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/arch/x86/kernel/cpu/sgx/main.c b/arch/x86/kernel/cpu/sgx/main.c index 166692f2d501..388350b8f5e3 100644 --- a/arch/x86/kernel/cpu/sgx/main.c +++ b/arch/x86/kernel/cpu/sgx/main.c @@ -732,6 +732,10 @@ int arch_memory_failure(unsigned long pfn, int flags) }

/** + * sgx_calc_section_metric() - Calculate an EPC section metric + * @low: low 32-bit word from CPUID:0x12:{2, ...} + * @high: high 32-bit word from CPUID:0x12:{2, ...} + * * A section metric is concatenated in a way that @low bits 12-31 define the * bits 12-31 of the metric and @high bits 0-19 define the bits 32-51 of the * metric.