linux-kernel - [PATCH v2 08/22] powerpc/kvm/book3s: switch from raw_spin_*lock to arch_spin

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 19 Mar 2020 09:25:55 +0530
From:   "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
To:     linuxppc-dev@...ts.ozlabs.org, mpe@...erman.id.au,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        kvm-ppc@...r.kernel.org
Cc:     npiggin@...il.com, paulus@...abs.org, leonardo@...ux.ibm.com,
        kirill@...temov.name,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        Suraj Jitindar Singh <sjitindarsingh@...il.com>
Subject: [PATCH v2 08/22] powerpc/kvm/book3s: switch from raw_spin_*lock to arch_spin_lock.

These functions can get called in realmode. Hence use low level
arch_spin_lock which is safe to be called in realmode.

Cc: Suraj Jitindar Singh <sjitindarsingh@...il.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.ibm.com>
---
 arch/powerpc/kvm/book3s_hv_rm_mmu.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index 220305454c23..03f8347de48b 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
@@ -948,7 +948,7 @@ static long kvmppc_do_h_page_init_zero(struct kvm_vcpu *vcpu,
 		return ret;
 
 	/* Check if we've been invalidated */
-	raw_spin_lock(&kvm->mmu_lock.rlock);
+	arch_spin_lock(&kvm->mmu_lock.rlock.raw_lock);
 	if (mmu_notifier_retry(kvm, mmu_seq)) {
 		ret = H_TOO_HARD;
 		goto out_unlock;
@@ -960,7 +960,7 @@ static long kvmppc_do_h_page_init_zero(struct kvm_vcpu *vcpu,
 	kvmppc_update_dirty_map(memslot, dest >> PAGE_SHIFT, PAGE_SIZE);
 
 out_unlock:
-	raw_spin_unlock(&kvm->mmu_lock.rlock);
+	arch_spin_unlock(&kvm->mmu_lock.rlock.raw_lock);
 	return ret;
 }
 
@@ -984,7 +984,7 @@ static long kvmppc_do_h_page_init_copy(struct kvm_vcpu *vcpu,
 		return ret;
 
 	/* Check if we've been invalidated */
-	raw_spin_lock(&kvm->mmu_lock.rlock);
+	arch_spin_lock(&kvm->mmu_lock.rlock.raw_lock);
 	if (mmu_notifier_retry(kvm, mmu_seq)) {
 		ret = H_TOO_HARD;
 		goto out_unlock;
@@ -996,7 +996,7 @@ static long kvmppc_do_h_page_init_copy(struct kvm_vcpu *vcpu,
 	kvmppc_update_dirty_map(dest_memslot, dest >> PAGE_SHIFT, PAGE_SIZE);
 
 out_unlock:
-	raw_spin_unlock(&kvm->mmu_lock.rlock);
+	arch_spin_unlock(&kvm->mmu_lock.rlock.raw_lock);
 	return ret;
 }
 
-- 
2.24.1