From: Will Deacon <will@kernel.org>
To: kvmarm@lists.cs.columbia.edu
Cc: Will Deacon <will@kernel.org>,
kernel-team@android.com, Marc Zyngier <maz@kernel.org>
Subject: [PATCH 1/9] KVM: arm64: Remove redundant Spectre-v2 code from kvm_map_vector()
Date: Mon, 26 Oct 2020 15:58:25 +0000 [thread overview]
Message-ID: <20201026155833.24847-2-will@kernel.org> (raw)
In-Reply-To: <20201026155833.24847-1-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 f56122eedffc..9353e0c09abe 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -1287,11 +1287,6 @@ 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;
--
2.29.0.rc2.309.g374f81d7ae-goog
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
next prev parent reply other threads:[~2020-10-26 15:58 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-26 15:58 [PATCH 0/9] Rework hyp vector handling Will Deacon
2020-10-26 15:58 ` Will Deacon [this message]
2020-10-26 15:58 ` [PATCH 2/9] KVM: arm64: Tidy up kvm_map_vector() Will Deacon
2020-10-26 15:58 ` [PATCH 3/9] KVM: arm64: Move kvm_get_hyp_vector() out of header file Will Deacon
2020-10-26 15:58 ` [PATCH 4/9] KVM: arm64: Make BP hardening globals static instead Will Deacon
2020-10-26 15:58 ` [PATCH 5/9] KVM: arm64: Move BP hardening helpers into spectre.h Will Deacon
2020-10-26 15:58 ` [PATCH 6/9] KVM: arm64: Re-jig logic when patching hardened hyp vectors Will Deacon
2020-10-26 15:58 ` [PATCH 7/9] KVM: arm64: Allocate hyp vectors statically Will Deacon
2020-10-26 15:58 ` [PATCH 8/9] arm64: spectre: Rename ARM64_HARDEN_EL2_VECTORS to ARM64_SPECTRE_V3A Will Deacon
2020-10-26 15:58 ` [PATCH 9/9] arm64: spectre: Consolidate spectre-v3a detection 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=20201026155833.24847-2-will@kernel.org \
--to=will@kernel.org \
--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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.