Linux KVM/arm64 development list
 help / color / mirror / Atom feed
From: Ricardo Koller <ricarkol@google.com>
To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, drjones@redhat.com
Cc: maz@kernel.org, pbonzini@redhat.com
Subject: [PATCH 1/3] KVM: arm64: selftests: add timer_get_tval() lib function
Date: Wed,  2 Mar 2022 09:21:42 -0800	[thread overview]
Message-ID: <20220302172144.2734258-2-ricarkol@google.com> (raw)
In-Reply-To: <20220302172144.2734258-1-ricarkol@google.com>

Add timer_get_tval() into the arch timer library functions in
selftests/kvm. Bonus: change the set_tval function to get an int32_t
(tval is signed).

Reviewed-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Ricardo Koller <ricarkol@google.com>
---
 .../selftests/kvm/include/aarch64/arch_timer.h | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/include/aarch64/arch_timer.h b/tools/testing/selftests/kvm/include/aarch64/arch_timer.h
index cb7c03de3a21..93f35a4fc1aa 100644
--- a/tools/testing/selftests/kvm/include/aarch64/arch_timer.h
+++ b/tools/testing/selftests/kvm/include/aarch64/arch_timer.h
@@ -79,7 +79,7 @@ static inline uint64_t timer_get_cval(enum arch_timer timer)
 	return 0;
 }
 
-static inline void timer_set_tval(enum arch_timer timer, uint32_t tval)
+static inline void timer_set_tval(enum arch_timer timer, int32_t tval)
 {
 	switch (timer) {
 	case VIRTUAL:
@@ -95,6 +95,22 @@ static inline void timer_set_tval(enum arch_timer timer, uint32_t tval)
 	isb();
 }
 
+static inline int32_t timer_get_tval(enum arch_timer timer)
+{
+	isb();
+	switch (timer) {
+	case VIRTUAL:
+		return (int32_t)read_sysreg(cntv_tval_el0);
+	case PHYSICAL:
+		return (int32_t)read_sysreg(cntp_tval_el0);
+	default:
+		GUEST_ASSERT_1(0, timer);
+	}
+
+	/* We should not reach here */
+	return 0;
+}
+
 static inline void timer_set_ctl(enum arch_timer timer, uint32_t ctl)
 {
 	switch (timer) {
-- 
2.35.1.574.g5d30c73bfb-goog

_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm

  reply	other threads:[~2022-03-02 17:21 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-02 17:21 [PATCH 0/3] KVM: arm64: selftests: Add edge cases tests for the arch timer Ricardo Koller
2022-03-02 17:21 ` Ricardo Koller [this message]
2022-03-02 19:55   ` [PATCH 1/3] KVM: arm64: selftests: add timer_get_tval() lib function Oliver Upton
2022-03-02 17:21 ` [PATCH 2/3] KVM: arm64: selftests: add arch_timer_edge_cases Ricardo Koller
2022-03-02 20:45   ` Oliver Upton
2022-03-02 21:25     ` Ricardo Koller
2022-03-04  7:52       ` Marc Zyngier
2022-03-04 19:01         ` Ricardo Koller
2022-03-02 17:21 ` [PATCH 3/3] KVM: arm64: selftests: add edge cases tests into arch_timer_edge_cases Ricardo Koller

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=20220302172144.2734258-2-ricarkol@google.com \
    --to=ricarkol@google.com \
    --cc=drjones@redhat.com \
    --cc=kvm@vger.kernel.org \
    --cc=kvmarm@lists.cs.columbia.edu \
    --cc=maz@kernel.org \
    --cc=pbonzini@redhat.com \
    /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