From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:57782) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UhbjY-0003WE-6m for qemu-devel@nongnu.org; Wed, 29 May 2013 04:27:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UhbjO-0005oW-0b for qemu-devel@nongnu.org; Wed, 29 May 2013 04:27:48 -0400 Received: from mga02.intel.com ([134.134.136.20]:28325) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UhbjN-0005o8-Ql for qemu-devel@nongnu.org; Wed, 29 May 2013 04:27:37 -0400 From: Jordan Justen Date: Wed, 29 May 2013 01:27:25 -0700 Message-Id: <1369816047-16384-3-git-send-email-jordan.l.justen@intel.com> In-Reply-To: <1369816047-16384-1-git-send-email-jordan.l.justen@intel.com> References: <1369816047-16384-1-git-send-email-jordan.l.justen@intel.com> Subject: [Qemu-devel] [PATCH v7 2/4] kvm: add kvm_readonly_mem_enabled List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Jordan Justen Signed-off-by: Jordan Justen Reviewed-by: Paolo Bonzini --- include/sysemu/kvm.h | 10 ++++++++++ kvm-all.c | 6 ++++++ kvm-stub.c | 1 + 3 files changed, 17 insertions(+) diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index 08284ef..8b19322 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -45,6 +45,7 @@ extern bool kvm_async_interrupts_allowed; extern bool kvm_irqfds_allowed; extern bool kvm_msi_via_irqfd_allowed; extern bool kvm_gsi_routing_allowed; +extern bool kvm_readonly_mem_allowed; #if defined CONFIG_KVM || !defined NEED_CPU_H #define kvm_enabled() (kvm_allowed) @@ -97,6 +98,14 @@ extern bool kvm_gsi_routing_allowed; */ #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed) +/** + * kvm_readonly_mem_enabled: + * + * Returns: true if KVM readonly memory is enabled (ie the kernel + * supports it and we're running in a configuration that permits it). + */ +#define kvm_readonly_mem_enabled() (kvm_readonly_mem_allowed) + #else #define kvm_enabled() (0) #define kvm_irqchip_in_kernel() (false) @@ -104,6 +113,7 @@ extern bool kvm_gsi_routing_allowed; #define kvm_irqfds_enabled() (false) #define kvm_msi_via_irqfd_enabled() (false) #define kvm_gsi_routing_allowed() (false) +#define kvm_readonly_mem_enabled() (false) #endif struct kvm_run; diff --git a/kvm-all.c b/kvm-all.c index 8222729..327ae12 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -111,6 +111,7 @@ bool kvm_irqfds_allowed; bool kvm_msi_via_irqfd_allowed; bool kvm_gsi_routing_allowed; bool kvm_allowed; +bool kvm_readonly_mem_allowed; static const KVMCapabilityInfo kvm_required_capabilites[] = { KVM_CAP_INFO(USER_MEMORY), @@ -1425,6 +1426,11 @@ int kvm_init(void) s->irq_set_ioctl = KVM_IRQ_LINE_STATUS; } +#ifdef KVM_CAP_READONLY_MEM + kvm_readonly_mem_allowed = + (kvm_check_extension(s, KVM_CAP_READONLY_MEM) > 0); +#endif + ret = kvm_arch_init(s); if (ret < 0) { goto err; diff --git a/kvm-stub.c b/kvm-stub.c index b2c8f9b..22eaff0 100644 --- a/kvm-stub.c +++ b/kvm-stub.c @@ -26,6 +26,7 @@ bool kvm_irqfds_allowed; bool kvm_msi_via_irqfd_allowed; bool kvm_gsi_routing_allowed; bool kvm_allowed; +bool kvm_readonly_mem_allowed; int kvm_init_vcpu(CPUState *cpu) { -- 1.7.10.4