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| author | Reinette Chatre <reinette.chatre@intel.com> | 2022-05-10 21:08:43 +0300 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2022-07-07 20:13:02 +0300 |
| commit | bdaa8799f697daa059bf807da40a9444de94d7e3 (patch) | |
| tree | 0e8f8eaf128958796c6a8f8c8ecb7698213db0c6 /arch/x86/kernel/cpu/sgx/encl.c | |
| parent | 7f391752d4adac10cfc1e5d7a76bab0ab5c9c9d4 (diff) | |
| download | linux-bdaa8799f697daa059bf807da40a9444de94d7e3.tar.xz | |
x86/sgx: Rename sgx_encl_ewb_cpumask() as sgx_encl_cpumask()
sgx_encl_ewb_cpumask() is no longer unique to the reclaimer where it
is used during the EWB ENCLS leaf function when EPC pages are written
out to main memory and sgx_encl_ewb_cpumask() is used to learn which
CPUs might have executed the enclave to ensure that TLBs are cleared.
Upcoming SGX2 enabling will use sgx_encl_ewb_cpumask() during the
EMODPR and EMODT ENCLS leaf functions that make changes to enclave
pages. The function is needed for the same reason it is used now: to
learn which CPUs might have executed the enclave to ensure that TLBs
no longer point to the changed pages.
Rename sgx_encl_ewb_cpumask() to sgx_encl_cpumask() to reflect the
broader usage.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lkml.kernel.org/r/d4d08c449450a13d8dd3bb6c2b1af03895586d4f.1652137848.git.reinette.chatre@intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/sgx/encl.c')
| -rw-r--r-- | arch/x86/kernel/cpu/sgx/encl.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/sgx/encl.c b/arch/x86/kernel/cpu/sgx/encl.c index 6953d331f8d5..7539cef6e66b 100644 --- a/arch/x86/kernel/cpu/sgx/encl.c +++ b/arch/x86/kernel/cpu/sgx/encl.c @@ -715,7 +715,7 @@ int sgx_encl_mm_add(struct sgx_encl *encl, struct mm_struct *mm) } /** - * sgx_encl_ewb_cpumask() - Query which CPUs might be accessing the enclave + * sgx_encl_cpumask() - Query which CPUs might be accessing the enclave * @encl: the enclave * * Some SGX functions require that no cached linear-to-physical address @@ -740,7 +740,7 @@ int sgx_encl_mm_add(struct sgx_encl *encl, struct mm_struct *mm) * The following flow is used to support SGX functions that require that * no cached linear-to-physical address mappings are present: * 1) Execute ENCLS[ETRACK] to initiate hardware tracking. - * 2) Use this function (sgx_encl_ewb_cpumask()) to query which CPUs might be + * 2) Use this function (sgx_encl_cpumask()) to query which CPUs might be * accessing the enclave. * 3) Send IPI to identified CPUs, kicking them out of the enclave and * thus flushing all locally cached linear-to-physical address mappings. @@ -757,7 +757,7 @@ int sgx_encl_mm_add(struct sgx_encl *encl, struct mm_struct *mm) * * Return: cpumask of CPUs that might be accessing @encl */ -const cpumask_t *sgx_encl_ewb_cpumask(struct sgx_encl *encl) +const cpumask_t *sgx_encl_cpumask(struct sgx_encl *encl) { cpumask_t *cpumask = &encl->cpumask; struct sgx_encl_mm *encl_mm; |