diff options
| author |   Claudio Imbrenda <imbrenda@linux.ibm.com> | 2022-06-28 15:56:06 +0200 |
|---|---|---|
| committer |   Janosch Frank <frankja@linux.ibm.com> | 2022-07-13 14:42:11 +0000 |
| commit | 07fbdf7f934795a9e1728fcb3bdce6e0d8039e0c (patch) | |
| tree | e9ba266b9485f0105704ec851b455be8df8836e9 /arch/s390/include | |
| parent | KVM: s390: pv: refactor s390_reset_acc (diff) | |
| download | linux-dev-07fbdf7f934795a9e1728fcb3bdce6e0d8039e0c.tar.xz linux-dev-07fbdf7f934795a9e1728fcb3bdce6e0d8039e0c.zip | |
KVM: s390: pv: usage counter instead of flag
Use the new protected_count field as a counter instead of the old
is_protected flag. This will be used in upcoming patches.
Increment the counter when a secure configuration is created, and
decrement it when it is destroyed. Previously the flag was set when the
set secure parameters UVC was performed.
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Link: https://lore.kernel.org/r/20220628135619.32410-6-imbrenda@linux.ibm.com
Message-Id: <20220628135619.32410-6-imbrenda@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/mmu.h | 2 | ||||
| -rw-r--r-- | arch/s390/include/asm/mmu_context.h | 2 | ||||
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h index 82aae78e1315..1572b3634cdd 100644 --- a/arch/s390/include/asm/mmu.h +++ b/arch/s390/include/asm/mmu.h @@ -18,7 +18,7 @@ typedef struct { unsigned long asce_limit; unsigned long vdso_base; /* The mmu context belongs to a secure guest. */ - atomic_t is_protected; + atomic_t protected_count; /* * The following bitfields need a down_write on the mm * semaphore when they are written to. As they are only diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index c7937f369e62..2a38af5a00c2 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -26,7 +26,7 @@ static inline int init_new_context(struct task_struct *tsk, INIT_LIST_HEAD(&mm->context.gmap_list); cpumask_clear(&mm->context.cpu_attach_mask); atomic_set(&mm->context.flush_count, 0); - atomic_set(&mm->context.is_protected, 0); + atomic_set(&mm->context.protected_count, 0); mm->context.gmap_asce = 0; mm->context.flush_mm = 0; #ifdef CONFIG_PGSTE diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index a397b072a580..f16403ba81ec 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -525,7 +525,7 @@ static inline int mm_has_pgste(struct mm_struct *mm) static inline int mm_is_protected(struct mm_struct *mm) { #ifdef CONFIG_PGSTE - if (unlikely(atomic_read(&mm->context.is_protected))) + if (unlikely(atomic_read(&mm->context.protected_count))) return 1; #endif return 0; |