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From: Mirela Simonovic <mirela.simonovic@aggios.com>
To: xen-devel@lists.xen.org
Cc: edgar.iglesias@xilinx.com, julien.grall@arm.com,
	sstabellini@kernel.org,
	Mirela Simonovic <mirela.simonovic@aggios.com>
Subject: [PATCH v2 10/10] xen/arm: Call check_local_cpu_errata for secondary CPU only on boot
Date: Fri, 20 Apr 2018 14:25:13 +0200	[thread overview]
Message-ID: <20180420122513.27292-11-mirela.simonovic@aggios.com> (raw)
In-Reply-To: <20180420122513.27292-1-mirela.simonovic@aggios.com>

Checking CPU errata should be done only when a CPU is initially booted.
It is assumed that the CPU which is hotplugged after the system/Xen boots,
was initially hotplugged during the system/Xen boot, so errata is checked
by each CPU only once, on boot.

Signed-off-by: Mirela Simonovic <mirela.simonovic@aggios.com>

---
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Julien Grall <julien.grall@arm.com>
---
 xen/arch/arm/smpboot.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/arm/smpboot.c b/xen/arch/arm/smpboot.c
index d01b51592d..5d6c6cadec 100644
--- a/xen/arch/arm/smpboot.c
+++ b/xen/arch/arm/smpboot.c
@@ -366,8 +366,8 @@ void start_secondary(unsigned long boot_phys_offset,
 
     if ( system_state != SYS_STATE_boot )
         setup_virt_paging_secondary();
-
-    check_local_cpu_errata();
+    else
+        check_local_cpu_errata();
 
     printk(XENLOG_DEBUG "CPU %u booted.\n", smp_processor_id());
 
-- 
2.13.0


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  parent reply	other threads:[~2018-04-20 12:25 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-20 12:25 [PATCH v2 00/10] xen/arm64: Suspend preconditions and CPU hotplug fixes Mirela Simonovic
2018-04-20 12:25 ` [PATCH v2 01/10] xen/arm64: Added handling of the trapped access to OSLSR register Mirela Simonovic
2018-04-23 11:13   ` Julien Grall
2018-04-20 12:25 ` [PATCH v2 02/10] xen/arm: Ignore write to GICD_ISACTIVERn registers (vgic-v2) Mirela Simonovic
2018-04-23 11:15   ` Julien Grall
2018-04-24 11:02     ` Mirela Simonovic
2018-04-24 16:12       ` Julien Grall
2018-04-24 16:45         ` Mirela Simonovic
2018-04-20 12:25 ` [PATCH v2 03/10] xen/arm: Implement CPU_OFF PSCI call (physical interface) Mirela Simonovic
2018-04-23 11:21   ` Julien Grall
2018-04-23 17:12     ` Mirela Simonovic
2018-04-23 17:15       ` Julien Grall
2018-04-20 12:25 ` [PATCH v2 04/10] xen/arm: Remove __initdata and __init to enable CPU hotplug Mirela Simonovic
2018-04-23 11:21   ` Julien Grall
2018-04-20 12:25 ` [PATCH v2 05/10] xen/arm: Setup virtual paging for non-boot CPUs on hotplug/resume Mirela Simonovic
2018-04-23 11:28   ` Julien Grall
2018-04-24 14:50     ` Mirela Simonovic
2018-04-24 16:33       ` Julien Grall
2018-04-25  8:23       ` Julien Grall
2018-04-20 12:25 ` [PATCH v2 06/10] xen/common: Restore IRQ affinity when hotplugging a pCPU Mirela Simonovic
2018-04-20 12:25 ` [PATCH v2 07/10] xen/arm: Release maintenance interrupt when CPU is hot-unplugged Mirela Simonovic
2018-04-23 11:33   ` Julien Grall
2018-04-25 13:09     ` Mirela Simonovic
2018-04-25 13:23       ` Julien Grall
2018-04-25 14:28         ` Mirela Simonovic
2018-04-26 10:08           ` Julien Grall
2018-04-26 14:23             ` Tim Deegan
2018-04-27  9:28               ` Julien Grall
2018-04-27 14:15                 ` Tim Deegan
2018-04-27 14:38                   ` Mirela Simonovic
2018-04-27 15:12                     ` Julien Grall
2018-05-09 10:10                       ` Mirela Simonovic
2018-05-09 11:01                         ` Julien Grall
2018-05-09 11:14                           ` Mirela Simonovic
2018-05-09 11:15                             ` Julien Grall
2018-04-20 12:25 ` [PATCH v2 08/10] xen/arm: Release timer interrupts " Mirela Simonovic
2018-04-25 10:34   ` Mirela Simonovic
2018-04-25 10:38     ` Julien Grall
2018-04-20 12:25 ` [PATCH v2 09/10] xen/arm: Free memory allocated for sibling/core maps on CPU hot-unplug Mirela Simonovic
2018-04-23 11:38   ` Julien Grall
2018-04-27 11:14     ` Mirela Simonovic
2018-04-20 12:25 ` Mirela Simonovic [this message]
2018-04-23 11:46   ` [PATCH v2 10/10] xen/arm: Call check_local_cpu_errata for secondary CPU only on boot Julien Grall
2018-04-25 15:13     ` Mirela Simonovic
2018-04-26 10:18       ` Julien Grall

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