From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Juergen Gross <jgross@suse.com>
Cc: linux-kernel@vger.kernel.org, tglx@linutronix.de,
mingo@redhat.com, hpa@zytor.com, x86@kernel.org,
kys@microsoft.com, haiyangz@microsoft.com,
sthemmin@microsoft.com, akataria@vmware.com, pbonzini@redhat.com,
rkrcmar@redhat.com, boris.ostrovsky@oracle.com,
devel@linuxdriverproject.org,
virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
xen-devel@lists.xenproject.org,
linux-graphics-maintainer@vmware.com, pv-drivers@vmware.com,
xdeguillard@vmware.com, moltmann@vmware.com, arnd@arndb.de,
gregkh@linuxfoundation.org, linux-input@vger.kernel.org
Subject: Re: [PATCH v2 2/5] x86: add enum for hypervisors to replace x86_hyper
Date: Fri, 10 Nov 2017 10:26:11 -0800 [thread overview]
Message-ID: <20171110182611.maikfgykek7y6xww@dtor-ws> (raw)
In-Reply-To: <20171109132739.23465-3-jgross@suse.com>
On Thu, Nov 09, 2017 at 02:27:36PM +0100, Juergen Gross wrote:
> The x86_hyper pointer is only used for checking whether a virtual
> device is supporting the hypervisor the system is running on.
>
> Use an enum for that purpose instead and drop the x86_hyper pointer.
>
> Cc: kys@microsoft.com
> Cc: haiyangz@microsoft.com
> Cc: sthemmin@microsoft.com
> Cc: akataria@vmware.com
> Cc: pbonzini@redhat.com
> Cc: rkrcmar@redhat.com
> Cc: boris.ostrovsky@oracle.com
> Cc: devel@linuxdriverproject.org
> Cc: virtualization@lists.linux-foundation.org
> Cc: kvm@vger.kernel.org
> Cc: xen-devel@lists.xenproject.org
> Cc: linux-graphics-maintainer@vmware.com
> Cc: pv-drivers@vmware.com
> Cc: dmitry.torokhov@gmail.com
> Cc: xdeguillard@vmware.com
> Cc: moltmann@vmware.com
> Cc: arnd@arndb.de
> Cc: gregkh@linuxfoundation.org
> Cc: linux-input@vger.kernel.org
>
> Signed-off-by: Juergen Gross <jgross@suse.com>
> ---
> arch/x86/hyperv/hv_init.c | 2 +-
> arch/x86/include/asm/hypervisor.h | 23 ++++++++++++++---------
> arch/x86/kernel/cpu/hypervisor.c | 12 +++++++++---
> arch/x86/kernel/cpu/mshyperv.c | 4 ++--
> arch/x86/kernel/cpu/vmware.c | 4 ++--
> arch/x86/kernel/kvm.c | 4 ++--
> arch/x86/xen/enlighten_hvm.c | 4 ++--
> arch/x86/xen/enlighten_pv.c | 4 ++--
> drivers/hv/vmbus_drv.c | 2 +-
> drivers/input/mouse/vmmouse.c | 10 ++++------
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> drivers/misc/vmw_balloon.c | 2 +-
> 11 files changed, 40 insertions(+), 31 deletions(-)
>
> diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
> index a5db63f728a2..a0b86cf486e0 100644
> --- a/arch/x86/hyperv/hv_init.c
> +++ b/arch/x86/hyperv/hv_init.c
> @@ -113,7 +113,7 @@ void hyperv_init(void)
> u64 guest_id;
> union hv_x64_msr_hypercall_contents hypercall_msr;
>
> - if (x86_hyper != &x86_hyper_ms_hyperv)
> + if (x86_hyper_type != X86_HYPER_MS_HYPERV)
> return;
>
> /* Allocate percpu VP index */
> diff --git a/arch/x86/include/asm/hypervisor.h b/arch/x86/include/asm/hypervisor.h
> index 0eca7239a7aa..1b0a5abcd8ae 100644
> --- a/arch/x86/include/asm/hypervisor.h
> +++ b/arch/x86/include/asm/hypervisor.h
> @@ -29,6 +29,16 @@
> /*
> * x86 hypervisor information
> */
> +
> +enum x86_hypervisor_type {
> + X86_HYPER_NATIVE = 0,
> + X86_HYPER_VMWARE,
> + X86_HYPER_MS_HYPERV,
> + X86_HYPER_XEN_PV,
> + X86_HYPER_XEN_HVM,
> + X86_HYPER_KVM,
> +};
> +
> struct hypervisor_x86 {
> /* Hypervisor name */
> const char *name;
> @@ -36,6 +46,9 @@ struct hypervisor_x86 {
> /* Detection routine */
> uint32_t (*detect)(void);
>
> + /* Hypervisor type */
> + enum x86_hypervisor_type type;
> +
> /* init time callbacks */
> struct x86_hyper_init init;
>
> @@ -43,15 +56,7 @@ struct hypervisor_x86 {
> struct x86_hyper_runtime runtime;
> };
>
> -extern const struct hypervisor_x86 *x86_hyper;
> -
> -/* Recognized hypervisors */
> -extern const struct hypervisor_x86 x86_hyper_vmware;
> -extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
> -extern const struct hypervisor_x86 x86_hyper_xen_pv;
> -extern const struct hypervisor_x86 x86_hyper_xen_hvm;
> -extern const struct hypervisor_x86 x86_hyper_kvm;
> -
> +extern enum x86_hypervisor_type x86_hyper_type;
> extern void init_hypervisor_platform(void);
> #else
> static inline void init_hypervisor_platform(void) { }
> diff --git a/arch/x86/kernel/cpu/hypervisor.c b/arch/x86/kernel/cpu/hypervisor.c
> index 22226c1bf092..bea8d3e24f50 100644
> --- a/arch/x86/kernel/cpu/hypervisor.c
> +++ b/arch/x86/kernel/cpu/hypervisor.c
> @@ -26,6 +26,12 @@
> #include <asm/processor.h>
> #include <asm/hypervisor.h>
>
> +extern const struct hypervisor_x86 x86_hyper_vmware;
> +extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
> +extern const struct hypervisor_x86 x86_hyper_xen_pv;
> +extern const struct hypervisor_x86 x86_hyper_xen_hvm;
> +extern const struct hypervisor_x86 x86_hyper_kvm;
> +
> static const __initconst struct hypervisor_x86 * const hypervisors[] =
> {
> #ifdef CONFIG_XEN_PV
> @@ -41,8 +47,8 @@ static const __initconst struct hypervisor_x86 * const hypervisors[] =
> #endif
> };
>
> -const struct hypervisor_x86 *x86_hyper;
> -EXPORT_SYMBOL(x86_hyper);
> +enum x86_hypervisor_type x86_hyper_type;
> +EXPORT_SYMBOL(x86_hyper_type);
>
> static inline const struct hypervisor_x86 * __init
> detect_hypervisor_vendor(void)
> @@ -87,6 +93,6 @@ void __init init_hypervisor_platform(void)
> copy_array(&h->init, &x86_init.hyper, sizeof(h->init));
> copy_array(&h->runtime, &x86_platform.hyper, sizeof(h->runtime));
>
> - x86_hyper = h;
> + x86_hyper_type = h->type;
> x86_init.hyper.init_platform();
> }
> diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
> index 6bb84d655e4b..85eb5fc180c8 100644
> --- a/arch/x86/kernel/cpu/mshyperv.c
> +++ b/arch/x86/kernel/cpu/mshyperv.c
> @@ -254,9 +254,9 @@ static void __init ms_hyperv_init_platform(void)
> #endif
> }
>
> -const __refconst struct hypervisor_x86 x86_hyper_ms_hyperv = {
> +const __initconst struct hypervisor_x86 x86_hyper_ms_hyperv = {
> .name = "Microsoft Hyper-V",
> .detect = ms_hyperv_platform,
> + .type = X86_HYPER_MS_HYPERV,
> .init.init_platform = ms_hyperv_init_platform,
> };
> -EXPORT_SYMBOL(x86_hyper_ms_hyperv);
> diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
> index 4804c1d063c8..8e005329648b 100644
> --- a/arch/x86/kernel/cpu/vmware.c
> +++ b/arch/x86/kernel/cpu/vmware.c
> @@ -205,10 +205,10 @@ static bool __init vmware_legacy_x2apic_available(void)
> (eax & (1 << VMWARE_PORT_CMD_LEGACY_X2APIC)) != 0;
> }
>
> -const __refconst struct hypervisor_x86 x86_hyper_vmware = {
> +const __initconst struct hypervisor_x86 x86_hyper_vmware = {
> .name = "VMware",
> .detect = vmware_platform,
> + .type = X86_HYPER_VMWARE,
> .init.init_platform = vmware_platform_setup,
> .init.x2apic_available = vmware_legacy_x2apic_available,
> };
> -EXPORT_SYMBOL(x86_hyper_vmware);
> diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
> index 9dca8437c795..a94de09edbed 100644
> --- a/arch/x86/kernel/kvm.c
> +++ b/arch/x86/kernel/kvm.c
> @@ -544,12 +544,12 @@ static uint32_t __init kvm_detect(void)
> return kvm_cpuid_base();
> }
>
> -const struct hypervisor_x86 x86_hyper_kvm __refconst = {
> +const __initconst struct hypervisor_x86 x86_hyper_kvm = {
> .name = "KVM",
> .detect = kvm_detect,
> + .type = X86_HYPER_KVM,
> .init.x2apic_available = kvm_para_available,
> };
> -EXPORT_SYMBOL_GPL(x86_hyper_kvm);
>
> static __init int activate_jump_labels(void)
> {
> diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c
> index 7b1622089f96..754d5391d9fa 100644
> --- a/arch/x86/xen/enlighten_hvm.c
> +++ b/arch/x86/xen/enlighten_hvm.c
> @@ -226,12 +226,12 @@ static uint32_t __init xen_platform_hvm(void)
> return xen_cpuid_base();
> }
>
> -const struct hypervisor_x86 x86_hyper_xen_hvm = {
> +const __initconst struct hypervisor_x86 x86_hyper_xen_hvm = {
> .name = "Xen HVM",
> .detect = xen_platform_hvm,
> + .type = X86_HYPER_XEN_HVM,
> .init.init_platform = xen_hvm_guest_init,
> .init.x2apic_available = xen_x2apic_para_available,
> .init.init_mem_mapping = xen_hvm_init_mem_mapping,
> .runtime.pin_vcpu = xen_pin_vcpu,
> };
> -EXPORT_SYMBOL(x86_hyper_xen_hvm);
> diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
> index 69d1a7054ddb..168efb2534c0 100644
> --- a/arch/x86/xen/enlighten_pv.c
> +++ b/arch/x86/xen/enlighten_pv.c
> @@ -1460,9 +1460,9 @@ static uint32_t __init xen_platform_pv(void)
> return 0;
> }
>
> -const struct hypervisor_x86 x86_hyper_xen_pv = {
> +const __initconst struct hypervisor_x86 x86_hyper_xen_pv = {
> .name = "Xen PV",
> .detect = xen_platform_pv,
> + .type = X86_HYPER_XEN_PV,
> .runtime.pin_vcpu = xen_pin_vcpu,
> };
> -EXPORT_SYMBOL(x86_hyper_xen_pv);
> diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
> index 937801ac2fe0..2cd134dd94d2 100644
> --- a/drivers/hv/vmbus_drv.c
> +++ b/drivers/hv/vmbus_drv.c
> @@ -1534,7 +1534,7 @@ static int __init hv_acpi_init(void)
> {
> int ret, t;
>
> - if (x86_hyper != &x86_hyper_ms_hyperv)
> + if (x86_hyper_type != X86_HYPER_MS_HYPERV)
> return -ENODEV;
>
> init_completion(&probe_event);
> diff --git a/drivers/input/mouse/vmmouse.c b/drivers/input/mouse/vmmouse.c
> index 0f586780ceb4..1ae5c1ef3f5b 100644
> --- a/drivers/input/mouse/vmmouse.c
> +++ b/drivers/input/mouse/vmmouse.c
> @@ -316,11 +316,9 @@ static int vmmouse_enable(struct psmouse *psmouse)
> /*
> * Array of supported hypervisors.
> */
> -static const struct hypervisor_x86 *vmmouse_supported_hypervisors[] = {
> - &x86_hyper_vmware,
> -#ifdef CONFIG_KVM_GUEST
> - &x86_hyper_kvm,
> -#endif
> +static enum x86_hypervisor_type vmmouse_supported_hypervisors[] = {
> + X86_HYPER_VMWARE,
> + X86_HYPER_KVM,
> };
>
> /**
> @@ -331,7 +329,7 @@ static bool vmmouse_check_hypervisor(void)
> int i;
>
> for (i = 0; i < ARRAY_SIZE(vmmouse_supported_hypervisors); i++)
> - if (vmmouse_supported_hypervisors[i] == x86_hyper)
> + if (vmmouse_supported_hypervisors[i] == x86_hyper_type)
> return true;
>
> return false;
> diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
> index 1e688bfec567..9047c0a529b2 100644
> --- a/drivers/misc/vmw_balloon.c
> +++ b/drivers/misc/vmw_balloon.c
> @@ -1271,7 +1271,7 @@ static int __init vmballoon_init(void)
> * Check if we are running on VMware's hypervisor and bail out
> * if we are not.
> */
> - if (x86_hyper != &x86_hyper_vmware)
> + if (x86_hyper_type != X86_HYPER_VMWARE)
> return -ENODEV;
>
> for (is_2m_pages = 0; is_2m_pages < VMW_BALLOON_NUM_PAGE_SIZES;
> --
> 2.12.3
>
--
Dmitry
next prev parent reply other threads:[~2017-11-10 18:26 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-09 13:27 [PATCH v2 0/5] x86/xen: support booting PVH guest via standard boot path Juergen Gross
2017-11-09 13:27 ` [PATCH v2 1/5] x86: merge x86_hyper into x86_platform and x86_init Juergen Gross
2017-11-10 9:41 ` [tip:x86/platform] x86/virt, x86/platform: Merge 'struct x86_hyper' into 'struct x86_platform' and 'struct x86_init' tip-bot for Juergen Gross
2017-11-09 13:27 ` [PATCH v2 2/5] x86: add enum for hypervisors to replace x86_hyper Juergen Gross
2017-11-09 17:57 ` Xavier Deguillard
2017-11-10 9:42 ` [tip:x86/platform] x86/virt: Add " tip-bot for Juergen Gross
2017-11-10 18:26 ` Dmitry Torokhov [this message]
2017-11-10 20:39 ` [PATCH v2 2/5] x86: add " KY Srinivasan
2017-11-09 13:27 ` [PATCH v2 3/5] x86/acpi: add test for ACPI_FADT_NO_VGA Juergen Gross
2017-11-10 9:42 ` [tip:x86/platform] x86/virt, x86/acpi: Add " tip-bot for Juergen Gross
2017-11-09 13:27 ` [PATCH v2 4/5] x86: add guest_late_init hook to hypervisor_x86 structure Juergen Gross
2017-11-10 9:43 ` [tip:x86/platform] x86/virt, x86/platform: Add ->guest_late_init() callback " tip-bot for Juergen Gross
2017-11-09 13:27 ` [PATCH v2 5/5] x86/xen: use guest_late_init to detect Xen PVH guest Juergen Gross
2017-11-10 9:43 ` [tip:x86/platform] x86/virt/xen: Use " tip-bot for Juergen Gross
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=20171110182611.maikfgykek7y6xww@dtor-ws \
--to=dmitry.torokhov@gmail.com \
--cc=akataria@vmware.com \
--cc=arnd@arndb.de \
--cc=boris.ostrovsky@oracle.com \
--cc=devel@linuxdriverproject.org \
--cc=gregkh@linuxfoundation.org \
--cc=haiyangz@microsoft.com \
--cc=hpa@zytor.com \
--cc=jgross@suse.com \
--cc=kvm@vger.kernel.org \
--cc=kys@microsoft.com \
--cc=linux-graphics-maintainer@vmware.com \
--cc=linux-input@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=moltmann@vmware.com \
--cc=pbonzini@redhat.com \
--cc=pv-drivers@vmware.com \
--cc=rkrcmar@redhat.com \
--cc=sthemmin@microsoft.com \
--cc=tglx@linutronix.de \
--cc=virtualization@lists.linux-foundation.org \
--cc=x86@kernel.org \
--cc=xdeguillard@vmware.com \
--cc=xen-devel@lists.xenproject.org \
/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;
as well as URLs for NNTP newsgroup(s).