From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
kernel-team@android.com
Subject: [PATCH 02/10] arm64: Add RV and RN fields for ESR_ELx_WFx_ISS
Date: Tue, 12 Apr 2022 14:12:55 +0100 [thread overview]
Message-ID: <20220412131303.504690-3-maz@kernel.org> (raw)
In-Reply-To: <20220412131303.504690-1-maz@kernel.org>
The ISS field exposed by ESR_ELx contain two additional subfields
with FEAT_WFxT:
- RN, the register number containing the timeout
- RV, indicating if the register number is valid
Describe these two fields according to the arch spec.
No functional change.
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
arch/arm64/include/asm/esr.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/include/asm/esr.h b/arch/arm64/include/asm/esr.h
index 65c2201b11b2..15156c478054 100644
--- a/arch/arm64/include/asm/esr.h
+++ b/arch/arm64/include/asm/esr.h
@@ -133,6 +133,8 @@
#define ESR_ELx_CV (UL(1) << 24)
#define ESR_ELx_COND_SHIFT (20)
#define ESR_ELx_COND_MASK (UL(0xF) << ESR_ELx_COND_SHIFT)
+#define ESR_ELx_WFx_ISS_RN (UL(0x1F) << 5)
+#define ESR_ELx_WFx_ISS_RV (UL(1) << 2)
#define ESR_ELx_WFx_ISS_TI (UL(3) << 0)
#define ESR_ELx_WFx_ISS_WFxT (UL(2) << 0)
#define ESR_ELx_WFx_ISS_WFI (UL(0) << 0)
--
2.34.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-04-12 13:15 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-12 13:12 [PATCH 00/10] arm64: Add initial support for FEAT_WFxT Marc Zyngier
2022-04-12 13:12 ` [PATCH 01/10] arm64: Expand ESR_ELx_WFx_ISS_TI to match its ARMv8.7 definition Marc Zyngier
2022-04-13 11:50 ` Joey Gouly
2022-04-12 13:12 ` Marc Zyngier [this message]
2022-04-13 11:53 ` [PATCH 02/10] arm64: Add RV and RN fields for ESR_ELx_WFx_ISS Joey Gouly
2022-04-12 13:12 ` [PATCH 03/10] KVM: arm64: Simplify kvm_cpu_has_pending_timer() Marc Zyngier
2022-04-12 13:12 ` [PATCH 04/10] KVM: arm64: Introduce kvm_counter_compute_delta() helper Marc Zyngier
2022-04-12 13:12 ` [PATCH 05/10] KVM: arm64: Handle blocking WFIT instruction Marc Zyngier
2022-04-12 13:12 ` [PATCH 06/10] KVM: arm64: Offer early resume for non-blocking WFxT instructions Marc Zyngier
2022-04-13 11:37 ` Joey Gouly
2022-04-13 13:46 ` Marc Zyngier
2022-04-12 13:13 ` [PATCH 07/10] KVM: arm64: Expose the WFXT feature to guests Marc Zyngier
2022-04-12 13:13 ` [PATCH 08/10] arm64: Add HWCAP advertising FEAT_WFXT Marc Zyngier
2022-04-12 13:13 ` [PATCH 09/10] arm64: Add wfet()/wfit() helpers Marc Zyngier
2022-04-12 13:13 ` [PATCH 10/10] arm64: Use WFxT for __delay() when possible Marc Zyngier
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=20220412131303.504690-3-maz@kernel.org \
--to=maz@kernel.org \
--cc=alexandru.elisei@arm.com \
--cc=catalin.marinas@arm.com \
--cc=james.morse@arm.com \
--cc=kernel-team@android.com \
--cc=kvm@vger.kernel.org \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=mark.rutland@arm.com \
--cc=suzuki.poulose@arm.com \
--cc=will@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).