Commit 1d6fad7b authored by Heiko Carstens's avatar Heiko Carstens Committed by Andrew Morton
Browse files

mseal sysmap: generic vdso vvar mapping 

With the introduction of the generic vdso data storage the VM_SEALED_SYSMAP
vm flag must be moved from the architecture specific
_install_special_mapping() call [1] [2] which maps the vvar mapping to
generic code.

[1] https://lkml.kernel.org/r/20250305021711.3867874-4-jeffxu@google.com
[2] https://lkml.kernel.org/r/20250305021711.3867874-5-jeffxu@google.com

Link: https://lkml.kernel.org/r/20250311123326.2686682-2-hca@linux.ibm.com


Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Reviewed-by: default avatarLorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Jeff Xu <jeffxu@chromium.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 7b0141da

lib/vdso/datastore.c

+2 −1
Original line number Diff line number Diff line
@@ -99,7 +99,8 @@ const struct vm_special_mapping vdso_vvar_mapping = { 
struct vm_area_struct *vdso_install_vvar_mapping(struct mm_struct *mm, unsigned long addr)

{

	return _install_special_mapping(mm, addr, VDSO_NR_PAGES * PAGE_SIZE,

					VM_READ | VM_MAYREAD | VM_IO | VM_DONTDUMP | VM_PFNMAP,

					VM_READ | VM_MAYREAD | VM_IO | VM_DONTDUMP |

					VM_PFNMAP | VM_SEALED_SYSMAP,

					&vdso_vvar_mapping);

}