| Message ID | 20210124062907.88229-5-tianjia.zhang@linux.alibaba.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Some optimizations related to sgx | expand |
On Sun, Jan 24, 2021 at 02:29:06PM +0800, Tianjia Zhang wrote: > In the function sgx_create_enclave(), the direct assignment > operation of attributes_mask determines that the ioctl PROVISION > operation must be executed after the ioctl CREATE operation, > which will limit the flexibility of sgx developers. > > This patch takes the assignment of `attributes_mask` from the > function sgx_create_enclave() has been moved to the function > sgx_open() to avoid this restriction. > > Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> The commit message should explicit that the API behaviour changes as the result. Please don't use hyphens in quoting. /Jarkko > --- > arch/x86/kernel/cpu/sgx/driver.c | 1 + > arch/x86/kernel/cpu/sgx/ioctl.c | 1 - > 2 files changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/x86/kernel/cpu/sgx/driver.c b/arch/x86/kernel/cpu/sgx/driver.c > index f2eac41bb4ff..fba0d0bfe976 100644 > --- a/arch/x86/kernel/cpu/sgx/driver.c > +++ b/arch/x86/kernel/cpu/sgx/driver.c > @@ -36,6 +36,7 @@ static int sgx_open(struct inode *inode, struct file *file) > return ret; > } > > + encl->attributes_mask = SGX_ATTR_DEBUG | SGX_ATTR_MODE64BIT | SGX_ATTR_KSS; > file->private_data = encl; > > return 0; > diff --git a/arch/x86/kernel/cpu/sgx/ioctl.c b/arch/x86/kernel/cpu/sgx/ioctl.c > index 90a5caf76939..1c6ecf9fbeff 100644 > --- a/arch/x86/kernel/cpu/sgx/ioctl.c > +++ b/arch/x86/kernel/cpu/sgx/ioctl.c > @@ -109,7 +109,6 @@ static int sgx_encl_create(struct sgx_encl *encl, struct sgx_secs *secs) > encl->base = secs->base; > encl->size = secs->size; > encl->attributes = secs->attributes; > - encl->attributes_mask = SGX_ATTR_DEBUG | SGX_ATTR_MODE64BIT | SGX_ATTR_KSS; > > /* Set only after completion, as encl->lock has not been taken. */ > set_bit(SGX_ENCL_CREATED, &encl->flags); > -- > 2.19.1.3.ge56e4f7 > >
On 1/30/21 9:26 PM, Jarkko Sakkinen wrote: > On Sun, Jan 24, 2021 at 02:29:06PM +0800, Tianjia Zhang wrote: >> In the function sgx_create_enclave(), the direct assignment >> operation of attributes_mask determines that the ioctl PROVISION >> operation must be executed after the ioctl CREATE operation, >> which will limit the flexibility of sgx developers. >> >> This patch takes the assignment of `attributes_mask` from the >> function sgx_create_enclave() has been moved to the function >> sgx_open() to avoid this restriction. >> >> Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> > > The commit message should explicit that the API behaviour changes > as the result. Please don't use hyphens in quoting. > > /Jarkko > Will be improved in the next version. Best regards, Tianjia >> --- >> arch/x86/kernel/cpu/sgx/driver.c | 1 + >> arch/x86/kernel/cpu/sgx/ioctl.c | 1 - >> 2 files changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/arch/x86/kernel/cpu/sgx/driver.c b/arch/x86/kernel/cpu/sgx/driver.c >> index f2eac41bb4ff..fba0d0bfe976 100644 >> --- a/arch/x86/kernel/cpu/sgx/driver.c >> +++ b/arch/x86/kernel/cpu/sgx/driver.c >> @@ -36,6 +36,7 @@ static int sgx_open(struct inode *inode, struct file *file) >> return ret; >> } >> >> + encl->attributes_mask = SGX_ATTR_DEBUG | SGX_ATTR_MODE64BIT | SGX_ATTR_KSS; >> file->private_data = encl; >> >> return 0; >> diff --git a/arch/x86/kernel/cpu/sgx/ioctl.c b/arch/x86/kernel/cpu/sgx/ioctl.c >> index 90a5caf76939..1c6ecf9fbeff 100644 >> --- a/arch/x86/kernel/cpu/sgx/ioctl.c >> +++ b/arch/x86/kernel/cpu/sgx/ioctl.c >> @@ -109,7 +109,6 @@ static int sgx_encl_create(struct sgx_encl *encl, struct sgx_secs *secs) >> encl->base = secs->base; >> encl->size = secs->size; >> encl->attributes = secs->attributes; >> - encl->attributes_mask = SGX_ATTR_DEBUG | SGX_ATTR_MODE64BIT | SGX_ATTR_KSS; >> >> /* Set only after completion, as encl->lock has not been taken. */ >> set_bit(SGX_ENCL_CREATED, &encl->flags); >> -- >> 2.19.1.3.ge56e4f7 >> >>
diff --git a/arch/x86/kernel/cpu/sgx/driver.c b/arch/x86/kernel/cpu/sgx/driver.c index f2eac41bb4ff..fba0d0bfe976 100644 --- a/arch/x86/kernel/cpu/sgx/driver.c +++ b/arch/x86/kernel/cpu/sgx/driver.c @@ -36,6 +36,7 @@ static int sgx_open(struct inode *inode, struct file *file) return ret; } + encl->attributes_mask = SGX_ATTR_DEBUG | SGX_ATTR_MODE64BIT | SGX_ATTR_KSS; file->private_data = encl; return 0; diff --git a/arch/x86/kernel/cpu/sgx/ioctl.c b/arch/x86/kernel/cpu/sgx/ioctl.c index 90a5caf76939..1c6ecf9fbeff 100644 --- a/arch/x86/kernel/cpu/sgx/ioctl.c +++ b/arch/x86/kernel/cpu/sgx/ioctl.c @@ -109,7 +109,6 @@ static int sgx_encl_create(struct sgx_encl *encl, struct sgx_secs *secs) encl->base = secs->base; encl->size = secs->size; encl->attributes = secs->attributes; - encl->attributes_mask = SGX_ATTR_DEBUG | SGX_ATTR_MODE64BIT | SGX_ATTR_KSS; /* Set only after completion, as encl->lock has not been taken. */ set_bit(SGX_ENCL_CREATED, &encl->flags);
In the function sgx_create_enclave(), the direct assignment operation of attributes_mask determines that the ioctl PROVISION operation must be executed after the ioctl CREATE operation, which will limit the flexibility of sgx developers. This patch takes the assignment of `attributes_mask` from the function sgx_create_enclave() has been moved to the function sgx_open() to avoid this restriction. Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> --- arch/x86/kernel/cpu/sgx/driver.c | 1 + arch/x86/kernel/cpu/sgx/ioctl.c | 1 - 2 files changed, 1 insertion(+), 1 deletion(-)