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| author | David S. Miller <davem@davemloft.net> | 2020-05-07 08:10:13 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-07 08:10:13 +0300 |
| commit | 3793faad7b5b730941b2efbc252d14374b60843a (patch) | |
| tree | e1bea43727d87f8fd30ca169f465a3591f15d63b /arch/s390/mm/pgalloc.c | |
| parent | ae1804de93f6f1626906567ae7deec8e0111259d (diff) | |
| parent | a811c1fa0a02c062555b54651065899437bacdbe (diff) | |
| download | linux-3793faad7b5b730941b2efbc252d14374b60843a.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Conflicts were all overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/s390/mm/pgalloc.c')
| -rw-r--r-- | arch/s390/mm/pgalloc.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c index 498c98a312f4..fff169d64711 100644 --- a/arch/s390/mm/pgalloc.c +++ b/arch/s390/mm/pgalloc.c @@ -70,8 +70,20 @@ static void __crst_table_upgrade(void *arg) { struct mm_struct *mm = arg; - if (current->active_mm == mm) - set_user_asce(mm); + /* we must change all active ASCEs to avoid the creation of new TLBs */ + if (current->active_mm == mm) { + S390_lowcore.user_asce = mm->context.asce; + if (current->thread.mm_segment == USER_DS) { + __ctl_load(S390_lowcore.user_asce, 1, 1); + /* Mark user-ASCE present in CR1 */ + clear_cpu_flag(CIF_ASCE_PRIMARY); + } + if (current->thread.mm_segment == USER_DS_SACF) { + __ctl_load(S390_lowcore.user_asce, 7, 7); + /* enable_sacf_uaccess does all or nothing */ + WARN_ON(!test_cpu_flag(CIF_ASCE_SECONDARY)); + } + } __tlb_flush_local(); } |