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Fri, 26 Jul 2024 07:55:01 -0700 (PDT) From: Alejandro Vallejo To: Xen-devel Cc: Alejandro Vallejo , Paul Durrant , Jan Beulich , Andrew Cooper , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Subject: [PATCH] x86/viridian: Clarify some viridian logging strings Date: Fri, 26 Jul 2024 15:52:00 +0100 Message-ID: <20240726145200.1991-1-alejandro.vallejo@cloud.com> X-Mailer: git-send-email 2.45.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @cloud.com) X-ZM-MESSAGEID: 1722005729575116600 Content-Type: text/plain; charset="utf-8" It's sadically misleading to show an error without letters and expect the dmesg reader to understand it's in hex. The patch adds a 0x prefix to all hex numbers that don't already have it. On the one instance in which a boolean is printed as an integer, print it as a decimal integer instead so it's 0/1 in the common case and not misleading if it's ever not just that due to a bug. While at it, rename VIRIDIAN CRASH to VIRIDIAN GUEST_CRASH. Every member of a support team that looks at the message systematically believes "viridian" crashed, which is absolutely not what goes on. It's the guest asking the hypervisor for a sudden shutdown because it crashed, and stating why. Signed-off-by: Alejandro Vallejo Reviewed-by: Paul Durrant --- Still going through its Gitlab pipeline --- xen/arch/x86/hvm/viridian/synic.c | 2 +- xen/arch/x86/hvm/viridian/viridian.c | 9 +++++---- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/xen/arch/x86/hvm/viridian/synic.c b/xen/arch/x86/hvm/viridian/= synic.c index 3375e55e95ca..c3dc573b003d 100644 --- a/xen/arch/x86/hvm/viridian/synic.c +++ b/xen/arch/x86/hvm/viridian/synic.c @@ -172,7 +172,7 @@ int viridian_synic_wrmsr(struct vcpu *v, uint32_t idx, = uint64_t val) vector =3D new.vector; vv->vector_to_sintx[vector] =3D sintx; =20 - printk(XENLOG_G_INFO "%pv: VIRIDIAN SINT%u: vector: %x\n", v, sint= x, + printk(XENLOG_G_INFO "%pv: VIRIDIAN SINT%u: vector: %#x\n", v, sin= tx, vector); =20 *vs =3D new; diff --git a/xen/arch/x86/hvm/viridian/viridian.c b/xen/arch/x86/hvm/viridi= an/viridian.c index 0496c52ed5a2..21480d9ee700 100644 --- a/xen/arch/x86/hvm/viridian/viridian.c +++ b/xen/arch/x86/hvm/viridian/viridian.c @@ -253,7 +253,7 @@ static void dump_guest_os_id(const struct domain *d) goi =3D &d->arch.hvm.viridian->guest_os_id; =20 printk(XENLOG_G_INFO - "d%d: VIRIDIAN GUEST_OS_ID: vendor: %x os: %x major: %x minor: = %x sp: %x build: %x\n", + "d%d: VIRIDIAN GUEST_OS_ID: vendor: %#x os: %#x major: %#x mino= r: %#x sp: %#x build: %#x\n", d->domain_id, goi->vendor, goi->os, goi->major, goi->minor, goi->service_pack, goi->build_number); } @@ -264,7 +264,7 @@ static void dump_hypercall(const struct domain *d) =20 hg =3D &d->arch.hvm.viridian->hypercall_gpa; =20 - printk(XENLOG_G_INFO "d%d: VIRIDIAN HYPERCALL: enabled: %x pfn: %lx\n", + printk(XENLOG_G_INFO "d%d: VIRIDIAN HYPERCALL: enabled: %u pfn: %#lx\n= ", d->domain_id, hg->enabled, (unsigned long)hg->pfn); } @@ -372,7 +372,8 @@ int guest_wrmsr_viridian(struct vcpu *v, uint32_t idx, = uint64_t val) d->shutdown_code =3D SHUTDOWN_crash; spin_unlock(&d->shutdown_lock); =20 - gprintk(XENLOG_WARNING, "VIRIDIAN CRASH: %lx %lx %lx %lx %lx\n", + gprintk(XENLOG_WARNING, + "VIRIDIAN GUEST_CRASH: %#lx %#lx %#lx %#lx %#lx\n", vv->crash_param[0], vv->crash_param[1], vv->crash_param[2], vv->crash_param[3], vv->crash_param[4]); break; @@ -1056,7 +1057,7 @@ void viridian_dump_guest_page(const struct vcpu *v, c= onst char *name, if ( !vp->msr.enabled ) return; =20 - printk(XENLOG_G_INFO "%pv: VIRIDIAN %s: pfn: %lx\n", + printk(XENLOG_G_INFO "%pv: VIRIDIAN %s: pfn: %#lx\n", v, name, (unsigned long)vp->msr.pfn); } =20 --=20 2.45.2