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s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=MkWKUi7xJlcxy+e8OWBoJNl1OXW3h1d9K35k1It603c=; b=J160BQZ2U9pszkqMXI2DH/M4AU1ruy5UWu1FTE8c6Cl6AvyhuBCpcD8ox8bqF/04ct 0x7wNtuT9MkwLIv1hy7vfnUtJXG/7PqCTRMdN3B6lckzPOviBO9axgE1op6Z4sHN5/Jn DY/deC6LR8Lp13IW6UV+FEYTboXnVtkZkg5rkpPAqlcIUrIByDgOGJScVFzy81moxh8S KhT6Fb8EIknIT81C1Ep7fnbqxJN90lt2rzJm7iH4qrJTclq48lpskhA7aI3lt0aV/HWP rsSEzZdMH3/4F8bmBqiZrRRfg1imixdSrxLRaXO0HN7PbKUOLnHnxqrSBC3cQK4p8+Zl vy3Q== X-Gm-Message-State: AOAM5310q3ChES/tK21Eu52xOxFxHYjhE+dDL4vg2+xk0/80RMoZZ5Dr 84yxklbmnjXwdrJUJokslt7aCdENOkkL0V42 X-Google-Smtp-Source: ABdhPJwC+zlXBovbZ5yMemFd6n1F3dx7E2v/1/0xLypGVzYOL4r1AHzTFwqN6hvHO5BmR1xUzcpuB+Tj4Xl/elq0 X-Received: by 2002:ad4:4152:: with SMTP id z18mr22181844qvp.42.1596544898043; Tue, 04 Aug 2020 05:41:38 -0700 (PDT) Date: Tue, 4 Aug 2020 14:41:25 +0200 In-Reply-To: Message-Id: <6514652d3a32d3ed33d6eb5c91d0af63bf0d1a0c.1596544734.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.28.0.163.g6104cc2f0b6-goog Subject: [PATCH v2 2/5] efi: provide empty efi_enter_virtual_mode implementation From: Andrey Konovalov To: Andrew Morton Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Marco Elver , Ard Biesheuvel , Arvind Sankar , kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, Walter Wu , Elena Petrova , Vincenzo Frascino , Catalin Marinas , Andrey Konovalov , kernel test robot Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 14F7E6C1A X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: When CONFIG_EFI is not enabled, we might get an undefined reference to efi_enter_virtual_mode() error, if this efi_enabled() call isn't inlined into start_kernel(). This happens in particular, if start_kernel() is annodated with __no_sanitize_address. Reported-by: kernel test robot Signed-off-by: Andrey Konovalov --- include/linux/efi.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/efi.h b/include/linux/efi.h index 05c47f857383..73db1ae04cef 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -606,7 +606,11 @@ extern void *efi_get_pal_addr (void); extern void efi_map_pal_code (void); extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); extern void efi_gettimeofday (struct timespec64 *ts); +#ifdef CONFIG_EFI extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ +#else +static inline void efi_enter_virtual_mode (void) {} +#endif #ifdef CONFIG_X86 extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size, -- 2.28.0.163.g6104cc2f0b6-goog