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d="scan'208";a="3859934" From: Andrew Cooper To: Xen-devel Date: Mon, 5 Aug 2019 13:43:00 +0100 Message-ID: <20190805124301.12887-4-andrew.cooper3@citrix.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190805124301.12887-1-andrew.cooper3@citrix.com> References: <20190805124301.12887-1-andrew.cooper3@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH 3/4] x86/desc: Shorten boot_{, comat_}gdt[] variable names X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Andrew Cooper , Wei Liu , Jan Beulich , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" The current names, boot_cpu_{,compat_}gdt_table, have a table suffix which = is redundant with the T of GDT, and the cpu infix doesn't provide any meaningf= ul context. Drop them both. Likewise, shorten the {,compat_}gdt{,_l1e} variables. Finally, rename gdt_descr to boot_gdtr to more clearly identify its purpose. Signed-off-by: Andrew Cooper Acked-by: Jan Beulich Reviewed-by: Roger Pau Monn=C3=A9 --- CC: Jan Beulich CC: Wei Liu CC: Roger Pau Monn=C3=A9 --- xen/arch/x86/boot/x86_64.S | 10 +++++----- xen/arch/x86/cpu/common.c | 4 ++-- xen/arch/x86/domain.c | 7 +++---- xen/arch/x86/efi/efi-boot.h | 2 +- xen/arch/x86/hvm/svm/svm.c | 2 +- xen/arch/x86/hvm/vmx/vmcs.c | 2 +- xen/arch/x86/smpboot.c | 18 +++++++++--------- xen/arch/x86/traps.c | 30 ++++++++++++++---------------- xen/common/efi/runtime.c | 2 +- xen/include/asm-x86/desc.h | 12 ++++++------ xen/include/asm-x86/ldt.h | 3 +-- 11 files changed, 44 insertions(+), 48 deletions(-) diff --git a/xen/arch/x86/boot/x86_64.S b/xen/arch/x86/boot/x86_64.S index cf47e019f5..3909363ca3 100644 --- a/xen/arch/x86/boot/x86_64.S +++ b/xen/arch/x86/boot/x86_64.S @@ -3,7 +3,7 @@ =20 ENTRY(__high_start) /* Install relocated data selectors. */ - lgdt gdt_descr(%rip) + lgdt boot_gdtr(%rip) mov $(__HYPERVISOR_DS64),%ecx mov %ecx,%ds mov %ecx,%es @@ -44,16 +44,16 @@ multiboot_ptr: .long 0 =20 .word 0 -GLOBAL(gdt_descr) +GLOBAL(boot_gdtr) .word LAST_RESERVED_GDT_BYTE - .quad boot_cpu_gdt_table - FIRST_RESERVED_GDT_BYTE + .quad boot_gdt - FIRST_RESERVED_GDT_BYTE =20 GLOBAL(stack_start) .quad cpu0_stack =20 .section .data.page_aligned, "aw", @progbits .align PAGE_SIZE, 0 -GLOBAL(boot_cpu_gdt_table) +GLOBAL(boot_gdt) .quad 0x0000000000000000 /* unused */ .quad 0x00af9a000000ffff /* 0xe008 ring 0 code, 64-bit mode = */ .quad 0x00cf92000000ffff /* 0xe010 ring 0 data = */ @@ -68,7 +68,7 @@ GLOBAL(boot_cpu_gdt_table) .align PAGE_SIZE, 0 /* NB. Even rings !=3D 0 get access to the full 4Gb, as only the = */ /* (compatibility) machine->physical mapping table lives there. = */ -GLOBAL(boot_cpu_compat_gdt_table) +GLOBAL(boot_compat_gdt) .quad 0x0000000000000000 /* unused */ .quad 0x00af9a000000ffff /* 0xe008 ring 0 code, 64-bit mode = */ .quad 0x00cf92000000ffff /* 0xe010 ring 0 data = */ diff --git a/xen/arch/x86/cpu/common.c b/xen/arch/x86/cpu/common.c index 7478e21177..dc2dea4d6d 100644 --- a/xen/arch/x86/cpu/common.c +++ b/xen/arch/x86/cpu/common.c @@ -709,9 +709,9 @@ void load_system_tables(void) =20 struct tss_struct *tss =3D &this_cpu(init_tss); seg_desc_t *gdt =3D - this_cpu(gdt_table) - FIRST_RESERVED_GDT_ENTRY; + this_cpu(gdt) - FIRST_RESERVED_GDT_ENTRY; seg_desc_t *compat_gdt =3D - this_cpu(compat_gdt_table) - FIRST_RESERVED_GDT_ENTRY; + this_cpu(compat_gdt) - FIRST_RESERVED_GDT_ENTRY; =20 const struct desc_ptr gdtr =3D { .base =3D (unsigned long)gdt, diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c index 5933b3f51b..612afb683f 100644 --- a/xen/arch/x86/domain.c +++ b/xen/arch/x86/domain.c @@ -1666,8 +1666,8 @@ static inline bool need_full_gdt(const struct domain = *d) static void update_xen_slot_in_full_gdt(const struct vcpu *v, unsigned int= cpu) { l1e_write(pv_gdt_ptes(v) + FIRST_RESERVED_GDT_PAGE, - !is_pv_32bit_vcpu(v) ? per_cpu(gdt_table_l1e, cpu) - : per_cpu(compat_gdt_table_l1e, cpu)); + !is_pv_32bit_vcpu(v) ? per_cpu(gdt_l1e, cpu) + : per_cpu(compat_gdt_l1e, cpu)); } =20 static void load_full_gdt(const struct vcpu *v, unsigned int cpu) @@ -1686,8 +1686,7 @@ static void load_default_gdt(unsigned int cpu) { struct desc_ptr gdt_desc =3D { .limit =3D LAST_RESERVED_GDT_BYTE, - .base =3D (unsigned long)(per_cpu(gdt_table, cpu) - - FIRST_RESERVED_GDT_ENTRY), + .base =3D (unsigned long)(per_cpu(gdt, cpu) - FIRST_RESERVED_GDT_= ENTRY), }; =20 lgdt(&gdt_desc); diff --git a/xen/arch/x86/efi/efi-boot.h b/xen/arch/x86/efi/efi-boot.h index 2f59d8bdbd..5324149f93 100644 --- a/xen/arch/x86/efi/efi-boot.h +++ b/xen/arch/x86/efi/efi-boot.h @@ -250,7 +250,7 @@ static void __init noreturn efi_arch_post_exit_boot(voi= d) "mov %[cr4], %%cr4\n\t" #endif /* Load data segments. */ - "lgdt gdt_descr(%%rip)\n\t" + "lgdt boot_gdtr(%%rip)\n\t" "mov %[ds], %%ss\n\t" "mov %[ds], %%ds\n\t" "mov %[ds], %%es\n\t" diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c index d81401dbc0..deafa3864e 100644 --- a/xen/arch/x86/hvm/svm/svm.c +++ b/xen/arch/x86/hvm/svm/svm.c @@ -1568,7 +1568,7 @@ bool svm_load_segs(unsigned int ldt_ents, unsigned lo= ng ldt_base, { /* Keep GDT in sync. */ seg_desc_t *desc =3D - this_cpu(gdt_table) + LDT_ENTRY - FIRST_RESERVED_GDT_ENTRY; + this_cpu(gdt) + LDT_ENTRY - FIRST_RESERVED_GDT_ENTRY; =20 _set_tssldt_desc(desc, ldt_base, ldt_ents * 8 - 1, SYS_DESC_ldt); =20 diff --git a/xen/arch/x86/hvm/vmx/vmcs.c b/xen/arch/x86/hvm/vmx/vmcs.c index 45d18493df..098613822a 100644 --- a/xen/arch/x86/hvm/vmx/vmcs.c +++ b/xen/arch/x86/hvm/vmx/vmcs.c @@ -793,7 +793,7 @@ static void vmx_set_host_env(struct vcpu *v) unsigned int cpu =3D smp_processor_id(); =20 __vmwrite(HOST_GDTR_BASE, - (unsigned long)(this_cpu(gdt_table) - FIRST_RESERVED_GDT_ENT= RY)); + (unsigned long)(this_cpu(gdt) - FIRST_RESERVED_GDT_ENTRY)); __vmwrite(HOST_IDTR_BASE, (unsigned long)idt_tables[cpu]); =20 __vmwrite(HOST_TR_BASE, (unsigned long)&per_cpu(init_tss, cpu)); diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c index 65e9ceeece..8d5fef0012 100644 --- a/xen/arch/x86/smpboot.c +++ b/xen/arch/x86/smpboot.c @@ -944,11 +944,11 @@ static void cpu_smpboot_free(unsigned int cpu, bool r= emove) free_domheap_page(mfn_to_page(mfn)); } =20 - FREE_XENHEAP_PAGE(per_cpu(compat_gdt_table, cpu)); + FREE_XENHEAP_PAGE(per_cpu(compat_gdt, cpu)); =20 if ( remove ) { - FREE_XENHEAP_PAGE(per_cpu(gdt_table, cpu)); + FREE_XENHEAP_PAGE(per_cpu(gdt, cpu)); FREE_XENHEAP_PAGE(idt_tables[cpu]); =20 if ( stack_base[cpu] ) @@ -976,22 +976,22 @@ static int cpu_smpboot_alloc(unsigned int cpu) goto out; memguard_guard_stack(stack_base[cpu]); =20 - gdt =3D per_cpu(gdt_table, cpu) ?: alloc_xenheap_pages(0, memflags); + gdt =3D per_cpu(gdt, cpu) ?: alloc_xenheap_pages(0, memflags); if ( gdt =3D=3D NULL ) goto out; - per_cpu(gdt_table, cpu) =3D gdt; - per_cpu(gdt_table_l1e, cpu) =3D + per_cpu(gdt, cpu) =3D gdt; + per_cpu(gdt_l1e, cpu) =3D l1e_from_pfn(virt_to_mfn(gdt), __PAGE_HYPERVISOR_RW); - memcpy(gdt, boot_cpu_gdt_table, NR_RESERVED_GDT_PAGES * PAGE_SIZE); + memcpy(gdt, boot_gdt, NR_RESERVED_GDT_PAGES * PAGE_SIZE); BUILD_BUG_ON(NR_CPUS > 0x10000); gdt[PER_CPU_GDT_ENTRY - FIRST_RESERVED_GDT_ENTRY].a =3D cpu; =20 - per_cpu(compat_gdt_table, cpu) =3D gdt =3D alloc_xenheap_pages(0, memf= lags); + per_cpu(compat_gdt, cpu) =3D gdt =3D alloc_xenheap_pages(0, memflags); if ( gdt =3D=3D NULL ) goto out; - per_cpu(compat_gdt_table_l1e, cpu) =3D + per_cpu(compat_gdt_l1e, cpu) =3D l1e_from_pfn(virt_to_mfn(gdt), __PAGE_HYPERVISOR_RW); - memcpy(gdt, boot_cpu_compat_gdt_table, NR_RESERVED_GDT_PAGES * PAGE_SI= ZE); + memcpy(gdt, boot_compat_gdt, NR_RESERVED_GDT_PAGES * PAGE_SIZE); gdt[PER_CPU_GDT_ENTRY - FIRST_RESERVED_GDT_ENTRY].a =3D cpu; =20 if ( idt_tables[cpu] =3D=3D NULL ) diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c index 38d12013db..162f708ac3 100644 --- a/xen/arch/x86/traps.c +++ b/xen/arch/x86/traps.c @@ -96,10 +96,10 @@ string_param("nmi", opt_nmi); DEFINE_PER_CPU(uint64_t, efer); static DEFINE_PER_CPU(unsigned long, last_extable_addr); =20 -DEFINE_PER_CPU_READ_MOSTLY(seg_desc_t *, gdt_table); -DEFINE_PER_CPU_READ_MOSTLY(l1_pgentry_t, gdt_table_l1e); -DEFINE_PER_CPU_READ_MOSTLY(seg_desc_t *, compat_gdt_table); -DEFINE_PER_CPU_READ_MOSTLY(l1_pgentry_t, compat_gdt_table_l1e); +DEFINE_PER_CPU_READ_MOSTLY(seg_desc_t *, gdt); +DEFINE_PER_CPU_READ_MOSTLY(l1_pgentry_t, gdt_l1e); +DEFINE_PER_CPU_READ_MOSTLY(seg_desc_t *, compat_gdt); +DEFINE_PER_CPU_READ_MOSTLY(l1_pgentry_t, compat_gdt_l1e); =20 /* Master table, used by CPU0. */ idt_entry_t __section(".bss.page_aligned") __aligned(PAGE_SIZE) @@ -1899,17 +1899,17 @@ void load_TR(void) { struct tss_struct *tss =3D &this_cpu(init_tss); struct desc_ptr old_gdt, tss_gdt =3D { - .base =3D (long)(this_cpu(gdt_table) - FIRST_RESERVED_GDT_ENTRY), + .base =3D (long)(this_cpu(gdt) - FIRST_RESERVED_GDT_ENTRY), .limit =3D LAST_RESERVED_GDT_BYTE }; =20 _set_tssldt_desc( - this_cpu(gdt_table) + TSS_ENTRY - FIRST_RESERVED_GDT_ENTRY, + this_cpu(gdt) + TSS_ENTRY - FIRST_RESERVED_GDT_ENTRY, (unsigned long)tss, offsetof(struct tss_struct, __cacheline_filler) - 1, SYS_DESC_tss_avail); _set_tssldt_desc( - this_cpu(compat_gdt_table) + TSS_ENTRY - FIRST_RESERVED_GDT_ENTRY, + this_cpu(compat_gdt) + TSS_ENTRY - FIRST_RESERVED_GDT_ENTRY, (unsigned long)tss, offsetof(struct tss_struct, __cacheline_filler) - 1, SYS_DESC_tss_busy); @@ -2000,8 +2000,8 @@ void __init init_idt_traps(void) /* CPU0 uses the master IDT. */ idt_tables[0] =3D idt_table; =20 - this_cpu(gdt_table) =3D boot_cpu_gdt_table; - this_cpu(compat_gdt_table) =3D boot_cpu_compat_gdt_table; + this_cpu(gdt) =3D boot_gdt; + this_cpu(compat_gdt) =3D boot_compat_gdt; } =20 extern void (*const autogen_entrypoints[NR_VECTORS])(void); @@ -2029,13 +2029,11 @@ void __init trap_init(void) } } =20 - /* Cache {,compat_}gdt_table_l1e now that physically relocation is don= e. */ - this_cpu(gdt_table_l1e) =3D - l1e_from_pfn(virt_to_mfn(boot_cpu_gdt_table), - __PAGE_HYPERVISOR_RW); - this_cpu(compat_gdt_table_l1e) =3D - l1e_from_pfn(virt_to_mfn(boot_cpu_compat_gdt_table), - __PAGE_HYPERVISOR_RW); + /* Cache {,compat_}gdt_l1e now that physically relocation is done. */ + this_cpu(gdt_l1e) =3D + l1e_from_pfn(virt_to_mfn(boot_gdt), __PAGE_HYPERVISOR_RW); + this_cpu(compat_gdt_l1e) =3D + l1e_from_pfn(virt_to_mfn(boot_compat_gdt), __PAGE_HYPERVISOR_RW); =20 percpu_traps_init(); =20 diff --git a/xen/common/efi/runtime.c b/xen/common/efi/runtime.c index 3d118d571d..ab53ebcc55 100644 --- a/xen/common/efi/runtime.c +++ b/xen/common/efi/runtime.c @@ -104,7 +104,7 @@ struct efi_rs_state efi_rs_enter(void) { struct desc_ptr gdt_desc =3D { .limit =3D LAST_RESERVED_GDT_BYTE, - .base =3D (unsigned long)(per_cpu(gdt_table, smp_processor_id= ()) - + .base =3D (unsigned long)(per_cpu(gdt, smp_processor_id()) - FIRST_RESERVED_GDT_ENTRY) }; =20 diff --git a/xen/include/asm-x86/desc.h b/xen/include/asm-x86/desc.h index c011c03ae2..0be9348d29 100644 --- a/xen/include/asm-x86/desc.h +++ b/xen/include/asm-x86/desc.h @@ -204,12 +204,12 @@ struct __packed desc_ptr { unsigned long base; }; =20 -extern seg_desc_t boot_cpu_gdt_table[]; -DECLARE_PER_CPU(seg_desc_t *, gdt_table); -DECLARE_PER_CPU(l1_pgentry_t, gdt_table_l1e); -extern seg_desc_t boot_cpu_compat_gdt_table[]; -DECLARE_PER_CPU(seg_desc_t *, compat_gdt_table); -DECLARE_PER_CPU(l1_pgentry_t, compat_gdt_table_l1e); +extern seg_desc_t boot_gdt[]; +DECLARE_PER_CPU(seg_desc_t *, gdt); +DECLARE_PER_CPU(l1_pgentry_t, gdt_l1e); +extern seg_desc_t boot_compat_gdt[]; +DECLARE_PER_CPU(seg_desc_t *, compat_gdt); +DECLARE_PER_CPU(l1_pgentry_t, compat_gdt_l1e); DECLARE_PER_CPU(bool, full_gdt_loaded); =20 extern void load_TR(void); diff --git a/xen/include/asm-x86/ldt.h b/xen/include/asm-x86/ldt.h index da502329fb..1383f55308 100644 --- a/xen/include/asm-x86/ldt.h +++ b/xen/include/asm-x86/ldt.h @@ -13,8 +13,7 @@ static inline void load_LDT(struct vcpu *v) lldt(0); else { - desc =3D (!is_pv_32bit_vcpu(v) - ? this_cpu(gdt_table) : this_cpu(compat_gdt_table)) + desc =3D (!is_pv_32bit_vcpu(v) ? this_cpu(gdt) : this_cpu(compat_g= dt)) + LDT_ENTRY - FIRST_RESERVED_GDT_ENTRY; _set_tssldt_desc(desc, LDT_VIRT_START(v), ents*8-1, SYS_DESC_ldt); lldt(LDT_ENTRY << 3); --=20 2.11.0 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel