[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen stable-4.16] x86: also zap secondary time area handles during soft reset
commit aac108509055e5f5ff293e1fb44614f96a0996c6 Author: Jan Beulich <jbeulich@xxxxxxxx> AuthorDate: Mon Oct 31 13:26:08 2022 +0100 Commit: Jan Beulich <jbeulich@xxxxxxxx> CommitDate: Mon Oct 31 13:26:08 2022 +0100 x86: also zap secondary time area handles during soft reset Just like domain_soft_reset() properly zaps runstate area handles, the secondary time area ones also need discarding to prevent guest memory corruption once the guest is re-started. Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> master commit: b80d4f8d2ea6418e32fb4f20d1304ace6d6566e3 master date: 2022-10-27 11:49:09 +0200 --- xen/arch/x86/domain.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c index a4356893bd..3fab2364be 100644 --- a/xen/arch/x86/domain.c +++ b/xen/arch/x86/domain.c @@ -929,6 +929,7 @@ int arch_domain_soft_reset(struct domain *d) struct page_info *page = virt_to_page(d->shared_info), *new_page; int ret = 0; struct domain *owner; + struct vcpu *v; mfn_t mfn; gfn_t gfn; p2m_type_t p2mt; @@ -1008,7 +1009,12 @@ int arch_domain_soft_reset(struct domain *d) "Failed to add a page to replace %pd's shared_info frame %"PRI_gfn"\n", d, gfn_x(gfn)); free_domheap_page(new_page); + goto exit_put_gfn; } + + for_each_vcpu ( d, v ) + set_xen_guest_handle(v->arch.time_info_guest, NULL); + exit_put_gfn: put_gfn(d, gfn_x(gfn)); exit_put_page: -- generated by git-patchbot for /home/xen/git/xen.git#stable-4.16
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