mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-01-22 14:06:32 +07:00
b73522e0c1
This patch adds the argument 'uniform' to mtrr_type_lookup(), which gets set to 1 when a given range is covered uniformly by MTRRs, i.e. the range is fully covered by a single MTRR entry or the default type. Change pud_set_huge() and pmd_set_huge() to honor the 'uniform' flag to see if it is safe to create a huge page mapping in the range. This allows them to create a huge page mapping in a range covered by a single MTRR entry of any memory type. It also detects a non-optimal request properly. They continue to check with the WB type since it does not effectively change the uniform mapping even if a request spans multiple MTRR entries. pmd_set_huge() logs a warning message to a non-optimal request so that driver writers will be aware of such a case. Drivers should make a mapping request aligned to a single MTRR entry when the range is covered by MTRRs. Signed-off-by: Toshi Kani <toshi.kani@hp.com> [ Realign, flesh out comments, improve warning message. ] Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Elliott@hp.com Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luis R. Rodriguez <mcgrof@suse.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: dave.hansen@intel.com Cc: linux-mm <linux-mm@kvack.org> Cc: pebolle@tiscali.nl Link: http://lkml.kernel.org/r/1431714237-880-7-git-send-email-toshi.kani@hp.com Link: http://lkml.kernel.org/r/1432628901-18044-8-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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| .. | ||
| acpi | ||
| apic | ||
| cpu | ||
| kprobes | ||
| .gitignore | ||
| alternative.c | ||
| amd_gart_64.c | ||
| amd_nb.c | ||
| apb_timer.c | ||
| aperture_64.c | ||
| apm_32.c | ||
| asm-offsets_32.c | ||
| asm-offsets_64.c | ||
| asm-offsets.c | ||
| audit_64.c | ||
| bootflag.c | ||
| check.c | ||
| cpuid.c | ||
| crash_dump_32.c | ||
| crash_dump_64.c | ||
| crash.c | ||
| devicetree.c | ||
| doublefault.c | ||
| dumpstack_32.c | ||
| dumpstack_64.c | ||
| dumpstack.c | ||
| e820.c | ||
| early_printk.c | ||
| early-quirks.c | ||
| entry_32.S | ||
| entry_64.S | ||
| espfix_64.c | ||
| ftrace.c | ||
| head32.c | ||
| head64.c | ||
| head_32.S | ||
| head_64.S | ||
| head.c | ||
| hpet.c | ||
| hw_breakpoint.c | ||
| i386_ksyms_32.c | ||
| i387.c | ||
| i8237.c | ||
| i8253.c | ||
| i8259.c | ||
| io_delay.c | ||
| ioport.c | ||
| iosf_mbi.c | ||
| irq_32.c | ||
| irq_64.c | ||
| irq_work.c | ||
| irq.c | ||
| irqinit.c | ||
| jump_label.c | ||
| kdebugfs.c | ||
| kexec-bzimage64.c | ||
| kgdb.c | ||
| ksysfs.c | ||
| kvm.c | ||
| kvmclock.c | ||
| ldt.c | ||
| livepatch.c | ||
| machine_kexec_32.c | ||
| machine_kexec_64.c | ||
| Makefile | ||
| mcount_64.S | ||
| mmconf-fam10h_64.c | ||
| module.c | ||
| mpparse.c | ||
| msr.c | ||
| nmi_selftest.c | ||
| nmi.c | ||
| paravirt_patch_32.c | ||
| paravirt_patch_64.c | ||
| paravirt-spinlocks.c | ||
| paravirt.c | ||
| pci-calgary_64.c | ||
| pci-dma.c | ||
| pci-iommu_table.c | ||
| pci-nommu.c | ||
| pci-swiotlb.c | ||
| pcspeaker.c | ||
| perf_regs.c | ||
| pmc_atom.c | ||
| pmem.c | ||
| probe_roms.c | ||
| process_32.c | ||
| process_64.c | ||
| process.c | ||
| ptrace.c | ||
| pvclock.c | ||
| quirks.c | ||
| reboot_fixups_32.c | ||
| reboot.c | ||
| relocate_kernel_32.S | ||
| relocate_kernel_64.S | ||
| resource.c | ||
| rtc.c | ||
| setup_percpu.c | ||
| setup.c | ||
| signal.c | ||
| smp.c | ||
| smpboot.c | ||
| stacktrace.c | ||
| step.c | ||
| sys_x86_64.c | ||
| syscall_32.c | ||
| syscall_64.c | ||
| sysfb_efi.c | ||
| sysfb_simplefb.c | ||
| sysfb.c | ||
| tboot.c | ||
| tce_64.c | ||
| test_nx.c | ||
| test_rodata.c | ||
| time.c | ||
| tls.c | ||
| tls.h | ||
| topology.c | ||
| trace_clock.c | ||
| tracepoint.c | ||
| traps.c | ||
| tsc_msr.c | ||
| tsc_sync.c | ||
| tsc.c | ||
| uprobes.c | ||
| verify_cpu.S | ||
| vm86_32.c | ||
| vmlinux.lds.S | ||
| vsmp_64.c | ||
| vsyscall_64.c | ||
| vsyscall_emu_64.S | ||
| vsyscall_gtod.c | ||
| vsyscall_trace.h | ||
| x86_init.c | ||
| x8664_ksyms_64.c | ||
| xsave.c | ||