From: Alexandre Chartre <alexandre.chartre@oracle.com>
To: pbonzini@redhat.com, rkrcmar@redhat.com, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, hpa@zytor.com,
dave.hansen@linux.intel.com, luto@kernel.org,
peterz@infradead.org, kvm@vger.kernel.org, x86@kernel.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: konrad.wilk@oracle.com, jan.setjeeilers@oracle.com,
liran.alon@oracle.com, jwadams@google.com,
alexandre.chartre@oracle.com
Subject: [RFC KVM 10/27] kvm/isolation: add KVM page table entry free functions
Date: Mon, 13 May 2019 16:38:18 +0200 [thread overview]
Message-ID: <1557758315-12667-11-git-send-email-alexandre.chartre@oracle.com> (raw)
In-Reply-To: <1557758315-12667-1-git-send-email-alexandre.chartre@oracle.com>
These functions are wrappers around the p4d/pud/pmd/pte free function
which can be used with any pointer in the directory.
Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
---
arch/x86/kvm/isolation.c | 26 ++++++++++++++++++++++++++
1 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/isolation.c b/arch/x86/kvm/isolation.c
index 1efdab1..61df750 100644
--- a/arch/x86/kvm/isolation.c
+++ b/arch/x86/kvm/isolation.c
@@ -161,6 +161,32 @@ static bool kvm_valid_pgt_entry(void *ptr)
}
+/*
+ * kvm_pXX_free() functions are equivalent to kernel pXX_free()
+ * functions but they can be used with any PXX pointer in the
+ * directory.
+ */
+
+static inline void kvm_pte_free(struct mm_struct *mm, pte_t *pte)
+{
+ pte_free_kernel(mm, PGTD_ALIGN(pte));
+}
+
+static inline void kvm_pmd_free(struct mm_struct *mm, pmd_t *pmd)
+{
+ pmd_free(mm, PGTD_ALIGN(pmd));
+}
+
+static inline void kvm_pud_free(struct mm_struct *mm, pud_t *pud)
+{
+ pud_free(mm, PGTD_ALIGN(pud));
+}
+
+static inline void kvm_p4d_free(struct mm_struct *mm, p4d_t *p4d)
+{
+ p4d_free(mm, PGTD_ALIGN(p4d));
+}
+
static int kvm_isolation_init_mm(void)
{
--
1.7.1
next prev parent reply other threads:[~2019-05-13 14:39 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-13 14:38 [RFC KVM 00/27] KVM Address Space Isolation Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 01/27] kernel: Export memory-management symbols required for KVM address space isolation Alexandre Chartre
2019-05-13 15:15 ` Peter Zijlstra
2019-05-13 15:17 ` Liran Alon
2019-05-13 14:38 ` [RFC KVM 02/27] KVM: x86: Introduce address_space_isolation module parameter Alexandre Chartre
2019-05-13 15:46 ` Andy Lutomirski
2019-05-13 15:55 ` Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 03/27] KVM: x86: Introduce KVM separate virtual address space Alexandre Chartre
2019-05-13 15:45 ` Andy Lutomirski
2019-05-13 16:04 ` Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 04/27] KVM: x86: Switch to KVM address space on entry to guest Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 05/27] KVM: x86: Add handler to exit kvm isolation Alexandre Chartre
2019-05-13 15:49 ` Andy Lutomirski
2019-05-13 16:10 ` Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 06/27] KVM: x86: Exit KVM isolation on IRQ entry Alexandre Chartre
2019-05-13 15:51 ` Andy Lutomirski
2019-05-13 16:28 ` Alexandre Chartre
2019-05-13 18:13 ` Andy Lutomirski
2019-05-14 7:07 ` Peter Zijlstra
2019-05-14 7:58 ` Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 07/27] KVM: x86: Switch to host address space when may access sensitive data Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 08/27] KVM: x86: Optimize branches which checks if address space isolation enabled Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 09/27] kvm/isolation: function to track buffers allocated for the KVM page table Alexandre Chartre
2019-05-13 14:38 ` Alexandre Chartre [this message]
2019-05-13 14:38 ` [RFC KVM 11/27] kvm/isolation: add KVM page table entry offset functions Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 12/27] kvm/isolation: add KVM page table entry allocation functions Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 13/27] kvm/isolation: add KVM page table entry set functions Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 14/27] kvm/isolation: functions to copy page table entries for a VA range Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 15/27] kvm/isolation: keep track of VA range mapped in KVM address space Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 16/27] kvm/isolation: functions to clear page table entries for a VA range Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 17/27] kvm/isolation: improve mapping copy when mapping is already present Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 18/27] kvm/isolation: function to copy page table entries for percpu buffer Alexandre Chartre
2019-05-13 18:18 ` Andy Lutomirski
2019-05-14 7:09 ` Peter Zijlstra
2019-05-14 8:25 ` Alexandre Chartre
2019-05-14 8:34 ` Andy Lutomirski
2019-05-14 9:41 ` Alexandre Chartre
2019-05-14 15:23 ` Andy Lutomirski
2019-05-14 16:24 ` Alexandre Chartre
2019-05-14 17:05 ` Peter Zijlstra
2019-05-14 18:09 ` Sean Christopherson
2019-05-14 20:33 ` Andy Lutomirski
2019-05-14 21:06 ` Sean Christopherson
2019-05-14 21:55 ` Andy Lutomirski
2019-05-14 22:38 ` Sean Christopherson
2019-05-18 0:05 ` Jonathan Adams
2019-05-14 20:27 ` Andy Lutomirski
2019-05-13 14:38 ` [RFC KVM 19/27] kvm/isolation: initialize the KVM page table with core mappings Alexandre Chartre
2019-05-13 15:50 ` Dave Hansen
2019-05-13 16:00 ` Andy Lutomirski
2019-05-13 17:00 ` Alexandre Chartre
2019-05-13 16:46 ` Sean Christopherson
2019-05-13 16:47 ` Alexandre Chartre
2019-05-14 10:26 ` Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 20/27] kvm/isolation: initialize the KVM page table with vmx specific data Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 21/27] kvm/isolation: initialize the KVM page table with vmx VM data Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 22/27] kvm/isolation: initialize the KVM page table with vmx cpu data Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 23/27] kvm/isolation: initialize the KVM page table with the vcpu tasks Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 24/27] kvm/isolation: KVM page fault handler Alexandre Chartre
2019-05-13 15:15 ` Peter Zijlstra
2019-05-13 21:25 ` Liran Alon
2019-05-14 2:02 ` Andy Lutomirski
2019-05-14 7:21 ` Peter Zijlstra
2019-05-14 15:36 ` Alexandre Chartre
2019-05-14 15:43 ` Andy Lutomirski
2019-05-13 16:02 ` Andy Lutomirski
2019-05-13 16:21 ` Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 25/27] kvm/isolation: implement actual KVM isolation enter/exit Alexandre Chartre
2019-05-13 15:16 ` Peter Zijlstra
2019-05-13 16:01 ` Andy Lutomirski
2019-05-13 14:38 ` [RFC KVM 26/27] kvm/isolation: initialize the KVM page table with KVM memslots Alexandre Chartre
2019-05-13 14:38 ` [RFC KVM 27/27] kvm/isolation: initialize the KVM page table with KVM buses Alexandre Chartre
2019-05-13 16:42 ` [RFC KVM 00/27] KVM Address Space Isolation Liran Alon
2019-05-13 18:17 ` Andy Lutomirski
2019-05-13 21:08 ` Liran Alon
2019-05-14 2:07 ` Andy Lutomirski
2019-05-14 7:37 ` Peter Zijlstra
2019-05-14 21:32 ` Jan Setje-Eilers
2019-05-14 8:05 ` Liran Alon
2019-05-14 7:29 ` Peter Zijlstra
2019-05-14 7:57 ` Liran Alon
2019-05-14 8:33 ` Alexandre Chartre
2019-05-13 19:31 ` Nakajima, Jun
2019-05-13 21:16 ` Liran Alon
2019-05-13 21:42 ` Nakajima, Jun
2019-05-13 21:53 ` Liran Alon
2019-05-15 12:52 ` Alexandre Chartre
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1557758315-12667-11-git-send-email-alexandre.chartre@oracle.com \
--to=alexandre.chartre@oracle.com \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=hpa@zytor.com \
--cc=jan.setjeeilers@oracle.com \
--cc=jwadams@google.com \
--cc=konrad.wilk@oracle.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=liran.alon@oracle.com \
--cc=luto@kernel.org \
--cc=mingo@redhat.com \
--cc=pbonzini@redhat.com \
--cc=peterz@infradead.org \
--cc=rkrcmar@redhat.com \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).