From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH V4 7/8] xen/arm64: increase MAX_VIRT_CPUS to 128 on arm64 Date: Fri, 29 May 2015 16:51:51 +0100 Message-ID: <55688B17.8040104@citrix.com> References: <1432808109-31466-1-git-send-email-cbz@baozis.org> <1432808109-31466-8-git-send-email-cbz@baozis.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1YyMbv-0007DQ-AH for xen-devel@lists.xenproject.org; Fri, 29 May 2015 15:54:15 +0000 In-Reply-To: <1432808109-31466-8-git-send-email-cbz@baozis.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Chen Baozi , xen-devel@lists.xenproject.org Cc: Julien Grall , Chen Baozi , Ian Campbell List-Id: xen-devel@lists.xenproject.org Hi Chen, On 28/05/15 11:15, Chen Baozi wrote: > From: Chen Baozi > > GIC-500 supports up to 128 cores in a single SoC. Increase MAX_VIRT_CPUS > to 128 on arm64. This should be the last patch. You still have to modify domain_max_vcpus before being able to increase the number of vCPUS handled. > Signed-off-by: Chen Baozi with the patch at the end of the series: Acked-by: Julien Grall > --- > xen/arch/arm/vgic-v3.c | 1 - > xen/include/asm-arm/config.h | 4 ++++ > 2 files changed, 4 insertions(+), 1 deletion(-) > > diff --git a/xen/arch/arm/vgic-v3.c b/xen/arch/arm/vgic-v3.c > index 0da031c..be5fff1 100644 > --- a/xen/arch/arm/vgic-v3.c > +++ b/xen/arch/arm/vgic-v3.c > @@ -889,7 +889,6 @@ static int vgic_v3_distr_mmio_write(struct vcpu *v, mmio_info_t *info) > rank = vgic_rank_offset(v, 64, gicd_reg - GICD_IROUTER, > DABT_DOUBLE_WORD); > if ( rank == NULL ) goto write_ignore; > - BUG_ON(v->domain->max_vcpus > 8); > new_irouter = *r; > vgic_lock_rank(v, rank, flags); > > diff --git a/xen/include/asm-arm/config.h b/xen/include/asm-arm/config.h > index 3b23e05..817c216 100644 > --- a/xen/include/asm-arm/config.h > +++ b/xen/include/asm-arm/config.h > @@ -47,7 +47,11 @@ > #define NR_CPUS 128 > #endif > > +#ifdef CONFIG_ARM_64 > +#define MAX_VIRT_CPUS 128 > +#else > #define MAX_VIRT_CPUS 8 > +#endif > > #define asmlinkage /* Nothing needed */ > > Regards, -- Julien Grall