[dpdk-dev] [PATCH v2] Fix two compile issues with i686 platform

[Thomas Monjalon]

2014-12-04 02:49, Qiu, Michael:
> On 12/3/2014 11:40 PM, Richardson, Bruce wrote:
> > On Wed, Dec 03, 2014 at 04:10:23PM +0800, Michael Qiu wrote:
> >> lib/librte_eal/linuxapp/eal/eal_memory.c:324:4: error: comparison
> >> is always false due to limited range of data type [-Werror=type-limits]
> >>     || (hugepage_sz == RTE_PGSIZE_16G)) {
> >>     ^
> >> cc1: all warnings being treated as errors
> >>
> >> lib/librte_eal/linuxapp/eal/eal.c(461): error #2259: non-pointer
> >> conversion from "long long" to "void *" may lose significant bits
> >>    RTE_PTR_ALIGN_CEIL((uintptr_t)addr, RTE_PGSIZE_16M);
> >>
> >> This was introuduced by commit b77b5639:
> >>         mem: add huge page sizes for IBM Power
> >>
> >> The root cause is that size_t and uintptr_t are 32-bit in i686
> >> platform, but RTE_PGSIZE_16M and RTE_PGSIZE_16G are always 64-bit.
> >>
> >> Define RTE_PGSIZE_16G only in 64 bit platform to avoid
> >> this issue.
> >>
> >> Signed-off-by: Michael Qiu <michael.qiu at intel.com>
> > Minor comment below.
> >
> > Acked-by: Bruce Richardson <bruce.richardson at intel.com>
> >
> >> ---
> >>  app/test/test_memzone.c                    | 18 ++++++++++++------
> >>  lib/librte_eal/common/eal_common_memzone.c |  2 ++
> >>  lib/librte_eal/common/include/rte_memory.h | 14 ++++++++------
> >>  lib/librte_eal/linuxapp/eal/eal_memory.c   | 12 +++++-------
> >>  4 files changed, 27 insertions(+), 19 deletions(-)
> >>
> > ... snip ...
> >> --- a/lib/librte_eal/common/include/rte_memory.h
> >> +++ b/lib/librte_eal/common/include/rte_memory.h
> >> @@ -53,12 +53,14 @@ extern "C" {
> >>  #endif
> >>  
> >>  enum rte_page_sizes {
> >> -	RTE_PGSIZE_4K = 1ULL << 12,
> >> -	RTE_PGSIZE_2M = 1ULL << 21,
> >> -	RTE_PGSIZE_1G = 1ULL << 30,
> >> -	RTE_PGSIZE_64K = 1ULL << 16,
> >> -	RTE_PGSIZE_16M = 1ULL << 24,
> >> -	RTE_PGSIZE_16G = 1ULL << 34
> >> +	RTE_PGSIZE_4K	= 1UL << 12,
> >> +	RTE_PGSIZE_2M	= 1UL << 21,
> >> +	RTE_PGSIZE_1G	= 1UL << 30,
> >> +	RTE_PGSIZE_64K	= 1UL << 16,
> >> +	RTE_PGSIZE_16M	= 1UL << 24,
> >> +#ifdef RTE_ARCH_64
> >> +	RTE_PGSIZE_16G	= 1ULL << 34
> > you don't need the "LL" here as long type is 64-bits on 64-bit systems. Changing
> > it to 1UL << 34 will keep all entries consistent.
> 
> Hi Thomas,
> 
> Should I resend V3 patch to modify this or you can do it when you plan
> to merge this patch?

I could do the change by myself. But given that you had some problems to send
the patch to the mailing list, please send the v3 to everyone.
Then a review from Chao would be appreciated.

Thanks
-- 
Thomas