| From: Heiko Carstens <hca@linux.ibm.com> |
| Subject: mseal sysmap: generic vdso vvar mapping |
| Date: Tue, 11 Mar 2025 13:33:25 +0100 |
| |
| 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: Heiko Carstens <hca@linux.ibm.com> |
| Reviewed-by: Lorenzo 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: Andrew Morton <akpm@linux-foundation.org> |
| --- |
| |
| lib/vdso/datastore.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| --- a/lib/vdso/datastore.c~mseal-sysmap-generic-vdso-vvar-mapping |
| +++ a/lib/vdso/datastore.c |
| @@ -99,7 +99,8 @@ const struct vm_special_mapping vdso_vva |
| 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); |
| } |
| |
| _ |
