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Two fixes for asynchronous destroy

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Merge tag 'kvm-s390-master-6.5-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

Two fixes for asynchronous destroy
This commit is contained in:
Paolo Bonzini 2023-07-23 12:50:30 -04:00
commit 0c189708bf
2 changed files with 7 additions and 2 deletions
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8
arch/s390/kvm/pv.c
View File

@ -411,8 +411,12 @@ int kvm_s390_pv_deinit_cleanup_all(struct kvm *kvm, u16 *rc, u16 *rrc)
u16 _rc, _rrc;
int cc = 0;
/* Make sure the counter does not reach 0 before calling s390_uv_destroy_range */
atomic_inc(&kvm->mm->context.protected_count);
/*
* Nothing to do if the counter was already 0. Otherwise make sure
* the counter does not reach 0 before calling s390_uv_destroy_range.
*/
if (!atomic_inc_not_zero(&kvm->mm->context.protected_count))
return 0;
*rc = 1;
/* If the current VM is protected, destroy it */

1
arch/s390/mm/gmap.c
View File

@ -2853,6 +2853,7 @@ int s390_replace_asce(struct gmap *gmap)
page = alloc_pages(GFP_KERNEL_ACCOUNT, CRST_ALLOC_ORDER);
if (!page)
return -ENOMEM;
page->index = 0;
table = page_to_virt(page);
memcpy(table, gmap->table, 1UL << (CRST_ALLOC_ORDER + PAGE_SHIFT));