From patchwork Tue Apr 23 09:28:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Roger_Pau_Monn=C3=A9?= X-Patchwork-Id: 10912533 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DA0AA14DB for ; Tue, 23 Apr 2019 09:29:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CAE73286BD for ; Tue, 23 Apr 2019 09:29:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BF081286BE; Tue, 23 Apr 2019 09:29:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0F2352870B for ; Tue, 23 Apr 2019 09:29:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727225AbfDWJ3T (ORCPT ); Tue, 23 Apr 2019 05:29:19 -0400 Received: from smtp03.citrix.com ([162.221.156.55]:30697 "EHLO SMTP03.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727204AbfDWJ3S (ORCPT ); Tue, 23 Apr 2019 05:29:18 -0400 X-IronPort-AV: E=Sophos;i="5.60,385,1549929600"; d="scan'208";a="84170484" From: Roger Pau Monne To: CC: Roger Pau Monne , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , Darren Hart , Andy Shevchenko , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , , , Subject: [PATCH 2/2] xen/pvh: correctly setup the PV EFI interface for dom0 Date: Tue, 23 Apr 2019 11:28:29 +0200 Message-ID: <20190423092829.67915-2-roger.pau@citrix.com> X-Mailer: git-send-email 2.17.2 (Apple Git-113) In-Reply-To: <20190423092829.67915-1-roger.pau@citrix.com> References: <20190423092829.67915-1-roger.pau@citrix.com> MIME-Version: 1.0 Sender: platform-driver-x86-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This involves initializing the boot params EFI related fields and the efi global variable. Without this fix a PVH dom0 doesn't detect when booted from EFI, and thus doesn't support accessing any of the EFI related data. Reported-by: PGNet Dev Signed-off-by: Roger Pau Monné --- Cc: Boris Ostrovsky Cc: Juergen Gross Cc: Stefano Stabellini Cc: Darren Hart Cc: Andy Shevchenko Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: x86@kernel.org Cc: xen-devel@lists.xenproject.org Cc: platform-driver-x86@vger.kernel.org --- arch/x86/platform/pvh/enlighten.c | 9 ++++++--- arch/x86/xen/efi.c | 12 ++++++------ arch/x86/xen/enlighten_pv.c | 2 +- arch/x86/xen/xen-ops.h | 8 -------- include/xen/xen-ops.h | 8 +++++++- 5 files changed, 20 insertions(+), 19 deletions(-) diff --git a/arch/x86/platform/pvh/enlighten.c b/arch/x86/platform/pvh/enlighten.c index 62f5c7045944..a748d2ea2d90 100644 --- a/arch/x86/platform/pvh/enlighten.c +++ b/arch/x86/platform/pvh/enlighten.c @@ -11,6 +11,7 @@ #include #include +#include #include /* @@ -44,8 +45,6 @@ void __init __weak mem_map_via_hcall(struct boot_params *ptr __maybe_unused) static void __init init_pvh_bootparams(bool xen_guest) { - memset(&pvh_bootparams, 0, sizeof(pvh_bootparams)); - if ((pvh_start_info.version > 0) && (pvh_start_info.memmap_entries)) { struct hvm_memmap_table_entry *ep; int i; @@ -111,8 +110,10 @@ void __init __weak xen_pvh_init(void) static void hypervisor_specific_init(bool xen_guest) { - if (xen_guest) + if (xen_guest) { xen_pvh_init(); + xen_efi_init(&pvh_bootparams); + } } /* @@ -131,6 +132,8 @@ void __init xen_prepare_pvh(void) BUG(); } + memset(&pvh_bootparams, 0, sizeof(pvh_bootparams)); + hypervisor_specific_init(xen_guest); init_pvh_bootparams(xen_guest); diff --git a/arch/x86/xen/efi.c b/arch/x86/xen/efi.c index 1fbb629a9d78..0d3365cb64de 100644 --- a/arch/x86/xen/efi.c +++ b/arch/x86/xen/efi.c @@ -158,7 +158,7 @@ static enum efi_secureboot_mode xen_efi_get_secureboot(void) return efi_secureboot_mode_unknown; } -void __init xen_efi_init(void) +void __init xen_efi_init(struct boot_params *boot_params) { efi_system_table_t *efi_systab_xen; @@ -167,12 +167,12 @@ void __init xen_efi_init(void) if (efi_systab_xen == NULL) return; - strncpy((char *)&boot_params.efi_info.efi_loader_signature, "Xen", - sizeof(boot_params.efi_info.efi_loader_signature)); - boot_params.efi_info.efi_systab = (__u32)__pa(efi_systab_xen); - boot_params.efi_info.efi_systab_hi = (__u32)(__pa(efi_systab_xen) >> 32); + strncpy((char *)&boot_params->efi_info.efi_loader_signature, "Xen", + sizeof(boot_params->efi_info.efi_loader_signature)); + boot_params->efi_info.efi_systab = (__u32)__pa(efi_systab_xen); + boot_params->efi_info.efi_systab_hi = (__u32)(__pa(efi_systab_xen) >> 32); - boot_params.secure_boot = xen_efi_get_secureboot(); + boot_params->secure_boot = xen_efi_get_secureboot(); set_bit(EFI_BOOT, &efi.flags); set_bit(EFI_PARAVIRT, &efi.flags); diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index c54a493e139a..4722ba2966ac 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -1403,7 +1403,7 @@ asmlinkage __visible void __init xen_start_kernel(void) /* We need this for printk timestamps */ xen_setup_runstate_info(0); - xen_efi_init(); + xen_efi_init(&boot_params); /* Start the world */ #ifdef CONFIG_X86_32 diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h index 0e60bd918695..357eb3fa2144 100644 --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -121,14 +121,6 @@ static inline void __init xen_init_vga(const struct dom0_vga_console_info *info, void __init xen_init_apic(void); -#ifdef CONFIG_XEN_EFI -extern void xen_efi_init(void); -#else -static inline void __init xen_efi_init(void) -{ -} -#endif - __visible void xen_irq_enable_direct(void); __visible void xen_irq_disable_direct(void); __visible unsigned long xen_save_fl_direct(void); diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h index 4969817124a8..51ef98e96d88 100644 --- a/include/xen/xen-ops.h +++ b/include/xen/xen-ops.h @@ -209,6 +209,7 @@ int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr, bool xen_running_on_version_or_later(unsigned int major, unsigned int minor); +#ifdef CONFIG_XEN_EFI efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc); efi_status_t xen_efi_set_time(efi_time_t *tm); efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending, @@ -233,7 +234,12 @@ efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules, int *reset_type); void xen_efi_reset_system(int reset_type, efi_status_t status, unsigned long data_size, efi_char16_t *data); - +extern void xen_efi_init(struct boot_params *boot_params); +#else +static inline void __init xen_efi_init(struct boot_params *boot_params) +{ +} +#endif #ifdef CONFIG_PREEMPT