From: Bharata B Rao <bharata@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org, kvm-ppc@vger.kernel.org,
linux-mm@kvack.org
Cc: paulus@au1.ibm.com, aneesh.kumar@linux.vnet.ibm.com,
jglisse@redhat.com, cclaudio@linux.ibm.com, linuxram@us.ibm.com,
sukadev@linux.vnet.ibm.com, hch@lst.de,
Bharata B Rao <bharata@linux.ibm.com>,
Paul Mackerras <paulus@ozlabs.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Hugh Dickins <hughd@google.com>
Subject: [PATCH v11 1/7] mm: ksm: Export ksm_madvise()
Date: Mon, 25 Nov 2019 08:36:25 +0530 [thread overview]
Message-ID: <20191125030631.7716-2-bharata@linux.ibm.com> (raw)
In-Reply-To: <20191125030631.7716-1-bharata@linux.ibm.com>
On PEF-enabled POWER platforms that support running of secure guests,
secure pages of the guest are represented by device private pages
in the host. Such pages needn't participate in KSM merging. This is
achieved by using ksm_madvise() call which need to be exported
since KVM PPC can be a kernel module.
Signed-off-by: Bharata B Rao <bharata@linux.ibm.com>
Acked-by: Paul Mackerras <paulus@ozlabs.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
---
mm/ksm.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/ksm.c b/mm/ksm.c
index dbee2eb4dd05..e45b02ad3f0b 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -2478,6 +2478,7 @@ int ksm_madvise(struct vm_area_struct *vma, unsigned long start,
return 0;
}
+EXPORT_SYMBOL_GPL(ksm_madvise);
int __ksm_enter(struct mm_struct *mm)
{
--
2.21.0
next prev parent reply other threads:[~2019-11-25 3:06 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-25 3:06 [PATCH v11 0/7] KVM: PPC: Driver to manage pages of secure guest Bharata B Rao
2019-11-25 3:06 ` Bharata B Rao [this message]
2019-11-25 3:09 ` [PATCH v11 1/7] mm: ksm: Export ksm_madvise() Bharata B Rao
2019-11-27 3:59 ` Hugh Dickins
2019-11-27 6:53 ` Bharata B Rao
2019-11-25 3:06 ` [PATCH v11 2/7] KVM: PPC: Support for running secure guests Bharata B Rao
2019-11-25 3:06 ` [PATCH v11 3/7] KVM: PPC: Shared pages support for " Bharata B Rao
2019-11-25 3:06 ` [PATCH v11 4/7] KVM: PPC: Radix changes for secure guest Bharata B Rao
2019-11-25 3:06 ` [PATCH v11 5/7] KVM: PPC: Handle memory plug/unplug to secure VM Bharata B Rao
2019-11-25 3:06 ` [PATCH v11 6/7] KVM: PPC: Support reset of secure guest Bharata B Rao
2019-11-25 3:06 ` [PATCH v11 7/7] KVM: PPC: Ultravisor: Add PPC_UV config option Bharata B Rao
2019-11-28 5:04 ` [PATCH v11 0/7] KVM: PPC: Driver to manage pages of secure guest Bharata B Rao
2019-12-01 20:24 ` Hugh Dickins
2019-12-03 9:44 ` Bharata B Rao
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