From: Will Deacon <will@kernel.org>
To: kvmarm@lists.cs.columbia.edu
Cc: catalin.marinas@arm.com, kernel-team@android.com,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>
Subject: [PATCH v3 01/10] KVM: arm64: Remove redundant Spectre-v2 code from kvm_map_vector()
Date: Fri, 13 Nov 2020 11:38:38 +0000 [thread overview]
Message-ID: <20201113113847.21619-2-will@kernel.org> (raw)
In-Reply-To: <20201113113847.21619-1-will@kernel.org>
'__kvm_bp_vect_base' is only used when dealing with the hardened vectors
so remove the redundant assignments in kvm_map_vectors().
Cc: Marc Zyngier <maz@kernel.org>
Cc: Quentin Perret <qperret@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
---
arch/arm64/kvm/arm.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 5750ec34960e..b43b637ded14 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -1306,11 +1306,6 @@ static int kvm_map_vectors(void)
* !SV2 + HEL2 -> allocate one vector slot and use exec mapping
* SV2 + HEL2 -> use hardened vectors and use exec mapping
*/
- if (cpus_have_const_cap(ARM64_SPECTRE_V2)) {
- __kvm_bp_vect_base = kvm_ksym_ref(__bp_harden_hyp_vecs);
- __kvm_bp_vect_base = kern_hyp_va(__kvm_bp_vect_base);
- }
-
if (cpus_have_const_cap(ARM64_HARDEN_EL2_VECTORS)) {
phys_addr_t vect_pa = __pa_symbol(__bp_harden_hyp_vecs);
unsigned long size = __BP_HARDEN_HYP_VECS_SZ;
--
2.29.2.299.gdc1121823c-goog
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
next prev parent reply other threads:[~2020-11-13 11:39 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-13 11:38 [PATCH v3 00/10] Rework hyp vector handling Will Deacon
2020-11-13 11:38 ` Will Deacon [this message]
2020-11-13 11:38 ` [PATCH v3 02/10] KVM: arm64: Tidy up kvm_map_vector() Will Deacon
2020-11-13 11:38 ` [PATCH v3 03/10] KVM: arm64: Move kvm_get_hyp_vector() out of header file Will Deacon
2020-11-13 11:38 ` [PATCH v3 04/10] KVM: arm64: Make BP hardening globals static instead Will Deacon
2020-11-13 11:38 ` [PATCH v3 05/10] KVM: arm64: Move BP hardening helpers into spectre.h Will Deacon
2020-11-13 11:38 ` [PATCH v3 06/10] KVM: arm64: Re-jig logic when patching hardened hyp vectors Will Deacon
2020-11-13 11:38 ` [PATCH v3 07/10] KVM: arm64: Allocate hyp vectors statically Will Deacon
2020-11-13 12:02 ` Marc Zyngier
2020-11-13 12:10 ` Will Deacon
2020-11-13 11:38 ` [PATCH v3 08/10] arm64: spectre: Rename ARM64_HARDEN_EL2_VECTORS to ARM64_SPECTRE_V3A Will Deacon
2020-11-13 11:38 ` [PATCH v3 09/10] arm64: spectre: Consolidate spectre-v3a detection Will Deacon
2020-11-13 11:38 ` [PATCH v3 10/10] KVM: arm64: Remove redundant hyp vectors entry Will Deacon
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=20201113113847.21619-2-will@kernel.org \
--to=will@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=kernel-team@android.com \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=maz@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