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Re: [PATCH v4 4/5] tools/libs/gnttab: Fix PAGE_SIZE redefinition error

Hi Costin,

On 08/06/2021 13:35, Costin Lupu wrote:
If PAGE_SIZE is already defined in the system (e.g. in /usr/include/limits.h
header) then gcc will trigger a redefinition error because of -Werror. This
patch replaces usage of PAGE_* macros with XC_PAGE_* macros in order to avoid
confusion between control domain page granularity (PAGE_* definitions) and
guest domain page granularity.

The exception is in osdep_xenforeignmemory_map() where we need the system page

Did you mean osdep_gnttab_grant_map?

size to check whether the PFN array should be allocated with mmap() or with
dynamic allocation.

Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>

Other than the question above:

Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>


Julien Grall



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