| Message ID | 167564539327.847146.788601375229324484.stgit@dwillia2-xfh.jf.intel.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | CXL RAM and the 'Soft Reserved' => 'System RAM' default | expand |
On Sun, Feb 05, 2023 at 05:03:13PM -0800, Dan Williams wrote: > In support of the CXL subsystem's use of 'struct range' to track decode > address ranges, add a common range_contains() implementation with > identical semantics as resource_contains(); > > The existing 'range_contains()' in lib/stackinit_kunit.c is namespaced > with a 'stackinit_' prefix. > > Cc: Kees Cook <keescook@chromium.org> > Signed-off-by: Dan Williams <dan.j.williams@intel.com> > --- > drivers/cxl/core/pci.c | 5 ----- > include/linux/range.h | 5 +++++ > lib/stackinit_kunit.c | 6 +++--- > 3 files changed, 8 insertions(+), 8 deletions(-) > Only question is whether this should be upstreamed separate/ahead since it's only tacitly related to the commit line, and the stackinit naming seems overly-broad enough to cause issues. Either way: Reviewed-by: Gregory Price <gregory.price@memverge.com>
Dan Williams wrote: > In support of the CXL subsystem's use of 'struct range' to track decode > address ranges, add a common range_contains() implementation with > identical semantics as resource_contains(); > > The existing 'range_contains()' in lib/stackinit_kunit.c is namespaced > with a 'stackinit_' prefix. > > Cc: Kees Cook <keescook@chromium.org> > Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Gregory Price wrote: > On Sun, Feb 05, 2023 at 05:03:13PM -0800, Dan Williams wrote: > > In support of the CXL subsystem's use of 'struct range' to track decode > > address ranges, add a common range_contains() implementation with > > identical semantics as resource_contains(); > > > > The existing 'range_contains()' in lib/stackinit_kunit.c is namespaced > > with a 'stackinit_' prefix. > > > > Cc: Kees Cook <keescook@chromium.org> > > Signed-off-by: Dan Williams <dan.j.williams@intel.com> > > --- > > drivers/cxl/core/pci.c | 5 ----- > > include/linux/range.h | 5 +++++ > > lib/stackinit_kunit.c | 6 +++--- > > 3 files changed, 8 insertions(+), 8 deletions(-) > > > > Only question is whether this should be upstreamed separate/ahead since > it's only tacitly related to the commit line, and the stackinit naming > seems overly-broad enough to cause issues. It's easier for me if it gets an ack and goes through the CXL tree. Otherwise I need to delay the patch that introduces range_contains() as a global symbol.
On 2/5/23 6:03 PM, Dan Williams wrote: > In support of the CXL subsystem's use of 'struct range' to track decode > address ranges, add a common range_contains() implementation with > identical semantics as resource_contains(); > > The existing 'range_contains()' in lib/stackinit_kunit.c is namespaced > with a 'stackinit_' prefix. > > Cc: Kees Cook <keescook@chromium.org> > Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> I can use this in my QTG series for DPA matching. > --- > drivers/cxl/core/pci.c | 5 ----- > include/linux/range.h | 5 +++++ > lib/stackinit_kunit.c | 6 +++--- > 3 files changed, 8 insertions(+), 8 deletions(-) > > diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c > index 1d1492440287..9ed2120dbf8a 100644 > --- a/drivers/cxl/core/pci.c > +++ b/drivers/cxl/core/pci.c > @@ -214,11 +214,6 @@ static int devm_cxl_enable_mem(struct device *host, struct cxl_dev_state *cxlds) > return devm_add_action_or_reset(host, clear_mem_enable, cxlds); > } > > -static bool range_contains(struct range *r1, struct range *r2) > -{ > - return r1->start <= r2->start && r1->end >= r2->end; > -} > - > /* require dvsec ranges to be covered by a locked platform window */ > static int dvsec_range_allowed(struct device *dev, void *arg) > { > diff --git a/include/linux/range.h b/include/linux/range.h > index 274681cc3154..7efb6a9b069b 100644 > --- a/include/linux/range.h > +++ b/include/linux/range.h > @@ -13,6 +13,11 @@ static inline u64 range_len(const struct range *range) > return range->end - range->start + 1; > } > > +static inline bool range_contains(struct range *r1, struct range *r2) > +{ > + return r1->start <= r2->start && r1->end >= r2->end; > +} > + > int add_range(struct range *range, int az, int nr_range, > u64 start, u64 end); > > diff --git a/lib/stackinit_kunit.c b/lib/stackinit_kunit.c > index 4591d6cf5e01..05947a2feb93 100644 > --- a/lib/stackinit_kunit.c > +++ b/lib/stackinit_kunit.c > @@ -31,8 +31,8 @@ static volatile u8 forced_mask = 0xff; > static void *fill_start, *target_start; > static size_t fill_size, target_size; > > -static bool range_contains(char *haystack_start, size_t haystack_size, > - char *needle_start, size_t needle_size) > +static bool stackinit_range_contains(char *haystack_start, size_t haystack_size, > + char *needle_start, size_t needle_size) > { > if (needle_start >= haystack_start && > needle_start + needle_size <= haystack_start + haystack_size) > @@ -175,7 +175,7 @@ static noinline void test_ ## name (struct kunit *test) \ > \ > /* Validate that compiler lined up fill and target. */ \ > KUNIT_ASSERT_TRUE_MSG(test, \ > - range_contains(fill_start, fill_size, \ > + stackinit_range_contains(fill_start, fill_size, \ > target_start, target_size), \ > "stack fill missed target!? " \ > "(fill %zu wide, target offset by %d)\n", \ >
On Sun, 05 Feb 2023 17:03:13 -0800 Dan Williams <dan.j.williams@intel.com> wrote: > In support of the CXL subsystem's use of 'struct range' to track decode > address ranges, add a common range_contains() implementation with > identical semantics as resource_contains(); > > The existing 'range_contains()' in lib/stackinit_kunit.c is namespaced > with a 'stackinit_' prefix. > > Cc: Kees Cook <keescook@chromium.org> > Signed-off-by: Dan Williams <dan.j.williams@intel.com> Seems reasonable. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > --- > drivers/cxl/core/pci.c | 5 ----- > include/linux/range.h | 5 +++++ > lib/stackinit_kunit.c | 6 +++--- > 3 files changed, 8 insertions(+), 8 deletions(-) > > diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c > index 1d1492440287..9ed2120dbf8a 100644 > --- a/drivers/cxl/core/pci.c > +++ b/drivers/cxl/core/pci.c > @@ -214,11 +214,6 @@ static int devm_cxl_enable_mem(struct device *host, struct cxl_dev_state *cxlds) > return devm_add_action_or_reset(host, clear_mem_enable, cxlds); > } > > -static bool range_contains(struct range *r1, struct range *r2) > -{ > - return r1->start <= r2->start && r1->end >= r2->end; > -} > - > /* require dvsec ranges to be covered by a locked platform window */ > static int dvsec_range_allowed(struct device *dev, void *arg) > { > diff --git a/include/linux/range.h b/include/linux/range.h > index 274681cc3154..7efb6a9b069b 100644 > --- a/include/linux/range.h > +++ b/include/linux/range.h > @@ -13,6 +13,11 @@ static inline u64 range_len(const struct range *range) > return range->end - range->start + 1; > } > > +static inline bool range_contains(struct range *r1, struct range *r2) > +{ > + return r1->start <= r2->start && r1->end >= r2->end; > +} > + > int add_range(struct range *range, int az, int nr_range, > u64 start, u64 end); > > diff --git a/lib/stackinit_kunit.c b/lib/stackinit_kunit.c > index 4591d6cf5e01..05947a2feb93 100644 > --- a/lib/stackinit_kunit.c > +++ b/lib/stackinit_kunit.c > @@ -31,8 +31,8 @@ static volatile u8 forced_mask = 0xff; > static void *fill_start, *target_start; > static size_t fill_size, target_size; > > -static bool range_contains(char *haystack_start, size_t haystack_size, > - char *needle_start, size_t needle_size) > +static bool stackinit_range_contains(char *haystack_start, size_t haystack_size, > + char *needle_start, size_t needle_size) > { > if (needle_start >= haystack_start && > needle_start + needle_size <= haystack_start + haystack_size) > @@ -175,7 +175,7 @@ static noinline void test_ ## name (struct kunit *test) \ > \ > /* Validate that compiler lined up fill and target. */ \ > KUNIT_ASSERT_TRUE_MSG(test, \ > - range_contains(fill_start, fill_size, \ > + stackinit_range_contains(fill_start, fill_size, \ > target_start, target_size), \ > "stack fill missed target!? " \ > "(fill %zu wide, target offset by %d)\n", \ >
On Sun, 2023-02-05 at 17:03 -0800, Dan Williams wrote: > In support of the CXL subsystem's use of 'struct range' to track decode > address ranges, add a common range_contains() implementation with > identical semantics as resource_contains(); > > The existing 'range_contains()' in lib/stackinit_kunit.c is namespaced > with a 'stackinit_' prefix. > > Cc: Kees Cook <keescook@chromium.org> > Signed-off-by: Dan Williams <dan.j.williams@intel.com> > --- > drivers/cxl/core/pci.c | 5 ----- > include/linux/range.h | 5 +++++ > lib/stackinit_kunit.c | 6 +++--- > 3 files changed, 8 insertions(+), 8 deletions(-) Looks good, Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> > > diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c > index 1d1492440287..9ed2120dbf8a 100644 > --- a/drivers/cxl/core/pci.c > +++ b/drivers/cxl/core/pci.c > @@ -214,11 +214,6 @@ static int devm_cxl_enable_mem(struct device *host, struct cxl_dev_state *cxlds) > return devm_add_action_or_reset(host, clear_mem_enable, cxlds); > } > > -static bool range_contains(struct range *r1, struct range *r2) > -{ > - return r1->start <= r2->start && r1->end >= r2->end; > -} > - > /* require dvsec ranges to be covered by a locked platform window */ > static int dvsec_range_allowed(struct device *dev, void *arg) > { > diff --git a/include/linux/range.h b/include/linux/range.h > index 274681cc3154..7efb6a9b069b 100644 > --- a/include/linux/range.h > +++ b/include/linux/range.h > @@ -13,6 +13,11 @@ static inline u64 range_len(const struct range *range) > return range->end - range->start + 1; > } > > +static inline bool range_contains(struct range *r1, struct range *r2) > +{ > + return r1->start <= r2->start && r1->end >= r2->end; > +} > + > int add_range(struct range *range, int az, int nr_range, > u64 start, u64 end); > > diff --git a/lib/stackinit_kunit.c b/lib/stackinit_kunit.c > index 4591d6cf5e01..05947a2feb93 100644 > --- a/lib/stackinit_kunit.c > +++ b/lib/stackinit_kunit.c > @@ -31,8 +31,8 @@ static volatile u8 forced_mask = 0xff; > static void *fill_start, *target_start; > static size_t fill_size, target_size; > > -static bool range_contains(char *haystack_start, size_t haystack_size, > - char *needle_start, size_t needle_size) > +static bool stackinit_range_contains(char *haystack_start, size_t haystack_size, > + char *needle_start, size_t needle_size) > { > if (needle_start >= haystack_start && > needle_start + needle_size <= haystack_start + haystack_size) > @@ -175,7 +175,7 @@ static noinline void test_ ## name (struct kunit *test) \ > \ > /* Validate that compiler lined up fill and target. */ \ > KUNIT_ASSERT_TRUE_MSG(test, \ > - range_contains(fill_start, fill_size, \ > + stackinit_range_contains(fill_start, fill_size, \ > target_start, target_size), \ > "stack fill missed target!? " \ > "(fill %zu wide, target offset by %d)\n", \ > >
diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c index 1d1492440287..9ed2120dbf8a 100644 --- a/drivers/cxl/core/pci.c +++ b/drivers/cxl/core/pci.c @@ -214,11 +214,6 @@ static int devm_cxl_enable_mem(struct device *host, struct cxl_dev_state *cxlds) return devm_add_action_or_reset(host, clear_mem_enable, cxlds); } -static bool range_contains(struct range *r1, struct range *r2) -{ - return r1->start <= r2->start && r1->end >= r2->end; -} - /* require dvsec ranges to be covered by a locked platform window */ static int dvsec_range_allowed(struct device *dev, void *arg) { diff --git a/include/linux/range.h b/include/linux/range.h index 274681cc3154..7efb6a9b069b 100644 --- a/include/linux/range.h +++ b/include/linux/range.h @@ -13,6 +13,11 @@ static inline u64 range_len(const struct range *range) return range->end - range->start + 1; } +static inline bool range_contains(struct range *r1, struct range *r2) +{ + return r1->start <= r2->start && r1->end >= r2->end; +} + int add_range(struct range *range, int az, int nr_range, u64 start, u64 end); diff --git a/lib/stackinit_kunit.c b/lib/stackinit_kunit.c index 4591d6cf5e01..05947a2feb93 100644 --- a/lib/stackinit_kunit.c +++ b/lib/stackinit_kunit.c @@ -31,8 +31,8 @@ static volatile u8 forced_mask = 0xff; static void *fill_start, *target_start; static size_t fill_size, target_size; -static bool range_contains(char *haystack_start, size_t haystack_size, - char *needle_start, size_t needle_size) +static bool stackinit_range_contains(char *haystack_start, size_t haystack_size, + char *needle_start, size_t needle_size) { if (needle_start >= haystack_start && needle_start + needle_size <= haystack_start + haystack_size) @@ -175,7 +175,7 @@ static noinline void test_ ## name (struct kunit *test) \ \ /* Validate that compiler lined up fill and target. */ \ KUNIT_ASSERT_TRUE_MSG(test, \ - range_contains(fill_start, fill_size, \ + stackinit_range_contains(fill_start, fill_size, \ target_start, target_size), \ "stack fill missed target!? " \ "(fill %zu wide, target offset by %d)\n", \
In support of the CXL subsystem's use of 'struct range' to track decode address ranges, add a common range_contains() implementation with identical semantics as resource_contains(); The existing 'range_contains()' in lib/stackinit_kunit.c is namespaced with a 'stackinit_' prefix. Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com> --- drivers/cxl/core/pci.c | 5 ----- include/linux/range.h | 5 +++++ lib/stackinit_kunit.c | 6 +++--- 3 files changed, 8 insertions(+), 8 deletions(-)