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exynos-linux-stable/include/linux/compiler-clang.h

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LLVMLinux: Add support for clang to compiler.h and new compiler-clang.h Add a compiler-clang.h file to add specific macros needed for compiling the kernel with clang. Initially the only override required is the macro for silencing the compiler for a purposefully uninintialized variable. Author: Mark Charlebois <charlebm@gmail.com> Signed-off-by: Mark Charlebois <charlebm@gmail.com> Signed-off-by: Behan Webster <behanw@converseincode.com>
2012-11-20 22:13:10 +01:00
#ifndef __LINUX_COMPILER_H
#error "Please don't include <linux/compiler-clang.h> directly, include <linux/compiler.h> instead."
#endif
/* Some compiler specific definitions are overwritten here
* for Clang compiler
*/
#ifdef uninitialized_var
#undef uninitialized_var
#define uninitialized_var(x) x = *(&(x))
#endif
Kbuild: provide a __UNIQUE_ID for clang The default __UNIQUE_ID macro in compiler.h fails to work for some drivers: drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:615:1: error: redefinition of '__UNIQUE_ID_firmware615' BRCMF_FW_NVRAM_DEF(4354, "brcmfmac4354-sdio.bin", "brcmfmac4354-sdio.txt"); This adds a copy of the version we use for gcc-4.3 and higher, as the same one works with all versions of clang that I could find in svn (2.6 and higher). Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Marek <mmarek@suse.com>
2016-02-08 15:38:32 +01:00
/* same as gcc, this was present in clang-2.6 so we can assume it works
* with any version that can compile the kernel
*/
#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
FROMLIST: BACKPORT: kbuild: fix dynamic ftrace with clang LTO With CONFIG_LTO_CLANG enabled, LLVM IR won't be compiled into object files until modpost_link. This change postpones calls to recordmcount until after this step. In order to exclude ftrace_process_locs from inspection, we add a new code section .text..ftrace, which we tell recordmcount to ignore, and a __norecordmcount attribute for moving functions to this section. Bug: 62093296 Bug: 67506682 Change-Id: Iba2c053968206acf533fadab1eb34a743b5088ee (am from https://patchwork.kernel.org/patch/10060327/) Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2017-06-16 12:52:57 -07:00
kasan: add no_sanitize attribute for clang builds commit 12c8f25a016dff69ee284aa3338bebfd2cfcba33 upstream. KASAN uses the __no_sanitize_address macro to disable instrumentation of particular functions. Right now it's defined only for GCC build, which causes false positives when clang is used. This patch adds a definition for clang. Note, that clang's revision 329612 or higher is required. [andreyknvl@google.com: remove redundant #ifdef CONFIG_KASAN check] Link: http://lkml.kernel.org/r/c79aa31a2a2790f6131ed607c58b0dd45dd62a6c.1523967959.git.andreyknvl@google.com Link: http://lkml.kernel.org/r/4ad725cc903f8534f8c8a60f0daade5e3d674f8d.1523554166.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: David Rientjes <rientjes@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Paul Lawrence <paullawrence@google.com> Cc: Sandipan Das <sandipan@linux.vnet.ibm.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Sodagudi Prasad <psodagud@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-20 14:55:52 -07:00
#undef __no_sanitize_address
#define __no_sanitize_address __attribute__((no_sanitize("address")))
x86/retpoline: Support retpoline builds with Clang commit 87358710c1fb4f1bf96bbe2349975ff9953fc9b2 upstream. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: arjan.van.de.ven@intel.com Cc: bp@alien8.de Cc: dave.hansen@intel.com Cc: jmattson@google.com Cc: karahmed@amazon.de Cc: kvm@vger.kernel.org Cc: pbonzini@redhat.com Cc: rkrcmar@redhat.com Link: http://lkml.kernel.org/r/1519037457-7643-5-git-send-email-dwmw@amazon.co.uk Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-19 10:50:57 +00:00
/* Clang doesn't have a way to turn it off per-function, yet. */
#ifdef __noretpoline
#undef __noretpoline
#endif
This is the 4.9.120 stable release -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAlt0UY8ACgkQONu9yGCS aT7S6hAAlsHMdJgnhCQ06Ec1ld1b3Q7tehn+xVFgWAPyHm/L3koM/78IMjo7ZYCV IxiIQyQ+JCn9DXQb2nqeEFgo8DYo83KvBkIgI+GQZHuVp+Dp9AvQLV8Bm3CQwiCY LPlP1sWs0xRZxovazMJ5MLsAOf9hZVkpwWoQHrEQMlUHpKYwf6GRBteZ6C3evZ4G lPo5N986h2YDYA3FLA2h5EeFS2H39bgbnepJ6/4/cYBpDy443X3TrV6UZjDDhHST 6XYPuqoApz+QIk2x2FfhVbZUb8WtPJNg/6IunOhlaUH/WCEN05lQ2x0jXAA4jOV/ Z2QyGnqsD8hMleDeakzo+yggaECkK2n+b6SicmomXWj7ILmBCrAIG0dOtPksmAaw JP9mOKz5b87N2GOShSvj9LXuFOIO7TVvwFZCo4oYxkaW6ROxSO7Ffkiv8I6imMn5 zPGSBG4Pr9eQfeO+IK2JAxrULICcFbh57XXEP5x7MH78yRw4hG++BtWg62pI7TQl l3zZ/eY8wKjTlNQbFkSAPenMypPic6w5NRA9tHST5XrwZkF0nzMWDz/1mAgOH5jx XVTK3kZabKAf3YQ2/2nAnUvDM4BsM1SwUxTfc1CNQHIl24G7Y3Z4Vxlfj5orNEQ+ Y5OPKDatNi8gWBecDLNITih7h+WlRn1UKR/v4f8TPV0gyGhn2Vc= =peDG -----END PGP SIGNATURE----- Merge 4.9.120 into android-4.9 Changes in 4.9.120 ext4: fix check to prevent initializing reserved inodes tpm: fix race condition in tpm_common_write() parisc: Enable CONFIG_MLONGCALLS by default parisc: Define mb() and add memory barriers to assembler unlock sequences kasan: add no_sanitize attribute for clang builds Mark HI and TASKLET softirq synchronous xen/netfront: don't cache skb_shinfo() ACPI / LPSS: Add missing prv_offset setting for byt/cht PWM devices scsi: sr: Avoid that opening a CD-ROM hangs with runtime power management enabled init: rename and re-order boot_cpu_state_init() root dentries need RCU-delayed freeing make sure that __dentry_kill() always invalidates d_seq, unhashed or not fix mntput/mntput race fix __legitimize_mnt()/mntput() race proc/sysctl: prune stale dentries during unregistering proc/sysctl: Don't grab i_lock under sysctl_lock. proc: Fix proc_sys_prune_dcache to hold a sb reference IB/core: Make testing MR flags for writability a static inline function IB/mlx4: Mark user MR as writable if actual virtual memory is writable mtd: nand: qcom: Add a NULL check for devm_kasprintf() IB/ocrdma: fix out of bounds access to local buffer ARM: dts: imx6sx: fix irq for pcie bridge x86/paravirt: Fix spectre-v2 mitigations for paravirt guests x86/speculation: Protect against userspace-userspace spectreRSB kprobes/x86: Fix %p uses in error messages x86/irqflags: Provide a declaration for native_save_fl x86/speculation/l1tf: Increase 32bit PAE __PHYSICAL_PAGE_SHIFT mm: x86: move _PAGE_SWP_SOFT_DIRTY from bit 7 to bit 1 x86/speculation/l1tf: Change order of offset/type in swap entry x86/speculation/l1tf: Protect swap entries against L1TF x86/speculation/l1tf: Protect PROT_NONE PTEs against speculation x86/speculation/l1tf: Make sure the first page is always reserved x86/speculation/l1tf: Add sysfs reporting for l1tf x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings x86/speculation/l1tf: Limit swap file size to MAX_PA/2 x86/bugs: Move the l1tf function and define pr_fmt properly x86/smp: Provide topology_is_primary_thread() x86/topology: Provide topology_smt_supported() cpu/hotplug: Make bringup/teardown of smp threads symmetric cpu/hotplug: Split do_cpu_down() cpu/hotplug: Provide knobs to control SMT x86/cpu: Remove the pointless CPU printout x86/cpu/AMD: Remove the pointless detect_ht() call x86/cpu/common: Provide detect_ht_early() x86/cpu/topology: Provide detect_extended_topology_early() x86/cpu/intel: Evaluate smp_num_siblings early x86/CPU/AMD: Do not check CPUID max ext level before parsing SMP info x86/cpu/AMD: Evaluate smp_num_siblings early x86/apic: Ignore secondary threads if nosmt=force x86/speculation/l1tf: Extend 64bit swap file size limit x86/cpufeatures: Add detection of L1D cache flush support. x86/CPU/AMD: Move TOPOEXT reenablement before reading smp_num_siblings x86/speculation/l1tf: Protect PAE swap entries against L1TF x86/speculation/l1tf: Fix up pte->pfn conversion for PAE Revert "x86/apic: Ignore secondary threads if nosmt=force" cpu/hotplug: Boot HT siblings at least once x86/KVM: Warn user if KVM is loaded SMT and L1TF CPU bug being present x86/KVM/VMX: Add module argument for L1TF mitigation x86/KVM/VMX: Add L1D flush algorithm x86/KVM/VMX: Add L1D MSR based flush x86/KVM/VMX: Add L1D flush logic kvm: nVMX: Update MSR load counts on a VMCS switch x86/KVM/VMX: Split the VMX MSR LOAD structures to have an host/guest numbers x86/KVM/VMX: Add find_msr() helper function x86/KVM/VMX: Separate the VMX AUTOLOAD guest/host number accounting x86/KVM/VMX: Extend add_atomic_switch_msr() to allow VMENTER only MSRs x86/KVM/VMX: Use MSR save list for IA32_FLUSH_CMD if required cpu/hotplug: Online siblings when SMT control is turned on x86/litf: Introduce vmx status variable x86/kvm: Drop L1TF MSR list approach x86/l1tf: Handle EPT disabled state proper x86/kvm: Move l1tf setup function x86/kvm: Add static key for flush always x86/kvm: Serialize L1D flush parameter setter x86/kvm: Allow runtime control of L1D flush cpu/hotplug: Expose SMT control init function cpu/hotplug: Set CPU_SMT_NOT_SUPPORTED early x86/bugs, kvm: Introduce boot-time control of L1TF mitigations Documentation: Add section about CPU vulnerabilities x86/KVM/VMX: Initialize the vmx_l1d_flush_pages' content Documentation/l1tf: Fix typos cpu/hotplug: detect SMT disabled by BIOS x86/KVM/VMX: Don't set l1tf_flush_l1d to true from vmx_l1d_flush() x86/KVM/VMX: Replace 'vmx_l1d_flush_always' with 'vmx_l1d_flush_cond' x86/KVM/VMX: Move the l1tf_flush_l1d test to vmx_l1d_flush() x86/irq: Demote irq_cpustat_t::__softirq_pending to u16 x86/KVM/VMX: Introduce per-host-cpu analogue of l1tf_flush_l1d x86: Don't include linux/irq.h from asm/hardirq.h x86/irq: Let interrupt handlers set kvm_cpu_l1tf_flush_l1d x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr() Documentation/l1tf: Remove Yonah processors from not vulnerable list KVM: x86: Add a framework for supporting MSR-based features KVM: SVM: Add MSR-based feature support for serializing LFENCE KVM: X86: Introduce kvm_get_msr_feature() KVM: X86: Allow userspace to define the microcode version KVM: VMX: support MSR_IA32_ARCH_CAPABILITIES as a feature MSR x86/speculation: Simplify sysfs report of VMX L1TF vulnerability x86/speculation: Use ARCH_CAPABILITIES to skip L1D flush on vmentry KVM: VMX: Tell the nested hypervisor to skip L1D flush on vmentry cpu/hotplug: Fix SMT supported evaluation x86/speculation/l1tf: Invert all not present mappings x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert x86/mm/pat: Make set_memory_np() L1TF safe x86/mm/kmmio: Make the tracer robust against L1TF tools headers: Synchronise x86 cpufeatures.h for L1TF additions x86/microcode: Do not upload microcode if CPUs are offline x86/microcode: Allow late microcode loading with SMT disabled x86/smp: fix non-SMP broken build due to redefinition of apic_id_is_primary_thread cpu/hotplug: Non-SMP machines do not make use of booted_once x86/init: fix build with CONFIG_SWAP=n x86/speculation/l1tf: Unbreak !__HAVE_ARCH_PFN_MODIFY_ALLOWED architectures x86/cpu/amd: Limit cpu_core_id fixup to families older than F17h x86/CPU/AMD: Have smp_num_siblings and cpu_llc_id always be present Linux 4.9.120 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2018-08-15 18:30:15 +02:00
FROMLIST: BACKPORT: kbuild: fix dynamic ftrace with clang LTO With CONFIG_LTO_CLANG enabled, LLVM IR won't be compiled into object files until modpost_link. This change postpones calls to recordmcount until after this step. In order to exclude ftrace_process_locs from inspection, we add a new code section .text..ftrace, which we tell recordmcount to ignore, and a __norecordmcount attribute for moving functions to this section. Bug: 62093296 Bug: 67506682 Change-Id: Iba2c053968206acf533fadab1eb34a743b5088ee (am from https://patchwork.kernel.org/patch/10060327/) Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2017-06-16 12:52:57 -07:00
#ifdef CONFIG_LTO_CLANG
#ifdef CONFIG_FTRACE_MCOUNT_RECORD
#define __norecordmcount \
__attribute__((__section__(".text..ftrace")))
#endif
add support for clang Control Flow Integrity (CFI) This change adds the CONFIG_CFI_CLANG option, CFI error handling, and a faster look-up table for cross module CFI checks. Bug: 67506682 Change-Id: Ic009f0a629b552a0eb16e6d89808c7029e91447d Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2017-05-11 15:03:36 -07:00
#define __nocfi __attribute__((no_sanitize("cfi")))
FROMLIST: BACKPORT: kbuild: fix dynamic ftrace with clang LTO With CONFIG_LTO_CLANG enabled, LLVM IR won't be compiled into object files until modpost_link. This change postpones calls to recordmcount until after this step. In order to exclude ftrace_process_locs from inspection, we add a new code section .text..ftrace, which we tell recordmcount to ignore, and a __norecordmcount attribute for moving functions to this section. Bug: 62093296 Bug: 67506682 Change-Id: Iba2c053968206acf533fadab1eb34a743b5088ee (am from https://patchwork.kernel.org/patch/10060327/) Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2017-06-16 12:52:57 -07:00
#endif
BACKPORT: kasan: add compiler support for clang Patch series "kasan: support alloca, LLVM", v4. This patch (of 5): For now we can hard-code ASAN ABI level 5, since historical clang builds can't build the kernel anyway. We also need to emulate gcc's __SANITIZE_ADDRESS__ flag, or memset() calls won't be instrumented. Link: http://lkml.kernel.org/r/20171204191735.132544-2-paullawrence@google.com Signed-off-by: Greg Hackmann <ghackmann@google.com> Signed-off-by: Paul Lawrence <paullawrence@google.com> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry-picked from 53a98ed73b848432a51631346b02049bb7fa039d) Change-Id: I4f694d1c06ad286e165d68938ff0f4348dc5fedf Signed-off-by: Paul Lawrence <paullawrence@google.com>
2018-02-06 15:36:03 -08:00
/* all clang versions usable with the kernel support KASAN ABI version 5 */
#define KASAN_ABI_VERSION 5
/* emulate gcc's __SANITIZE_ADDRESS__ flag */
#if __has_feature(address_sanitizer)
#define __SANITIZE_ADDRESS__
#endif
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