diff options
Diffstat (limited to '0015-x86-spec-ctrl-Rename-SCF_ist_wrmsr-to-SCF_ist_sc_msr.patch')
| -rw-r--r-- | 0015-x86-spec-ctrl-Rename-SCF_ist_wrmsr-to-SCF_ist_sc_msr.patch | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/0015-x86-spec-ctrl-Rename-SCF_ist_wrmsr-to-SCF_ist_sc_msr.patch b/0015-x86-spec-ctrl-Rename-SCF_ist_wrmsr-to-SCF_ist_sc_msr.patch deleted file mode 100644 index a9cc63f..0000000 --- a/0015-x86-spec-ctrl-Rename-SCF_ist_wrmsr-to-SCF_ist_sc_msr.patch +++ /dev/null @@ -1,110 +0,0 @@ -From 2cfbca32b9dc3a8d6520549ff468a7f550daf1b1 Mon Sep 17 00:00:00 2001 -From: Andrew Cooper <andrew.cooper3@citrix.com> -Date: Tue, 28 Jun 2022 14:36:56 +0100 -Subject: [PATCH 015/126] x86/spec-ctrl: Rename SCF_ist_wrmsr to SCF_ist_sc_msr - -We are about to introduce SCF_ist_ibpb, at which point SCF_ist_wrmsr becomes -ambiguous. - -No functional change. - -This is part of XSA-407. - -Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> -Reviewed-by: Jan Beulich <jbeulich@suse.com> -(cherry picked from commit 76d6a36f645dfdbad8830559d4d52caf36efc75e) ---- - xen/arch/x86/spec_ctrl.c | 6 +++--- - xen/include/asm-x86/spec_ctrl.h | 4 ++-- - xen/include/asm-x86/spec_ctrl_asm.h | 8 ++++---- - 3 files changed, 9 insertions(+), 9 deletions(-) - -diff --git a/xen/arch/x86/spec_ctrl.c b/xen/arch/x86/spec_ctrl.c -index 0fabfbe2a9f4..a6def47061e8 100644 ---- a/xen/arch/x86/spec_ctrl.c -+++ b/xen/arch/x86/spec_ctrl.c -@@ -1086,7 +1086,7 @@ void __init init_speculation_mitigations(void) - { - if ( opt_msr_sc_pv ) - { -- default_spec_ctrl_flags |= SCF_ist_wrmsr; -+ default_spec_ctrl_flags |= SCF_ist_sc_msr; - setup_force_cpu_cap(X86_FEATURE_SC_MSR_PV); - } - -@@ -1097,7 +1097,7 @@ void __init init_speculation_mitigations(void) - * Xen's value is not restored atomically. An early NMI hitting - * the VMExit path needs to restore Xen's value for safety. - */ -- default_spec_ctrl_flags |= SCF_ist_wrmsr; -+ default_spec_ctrl_flags |= SCF_ist_sc_msr; - setup_force_cpu_cap(X86_FEATURE_SC_MSR_HVM); - } - } -@@ -1110,7 +1110,7 @@ void __init init_speculation_mitigations(void) - * on real hardware matches the availability of MSR_SPEC_CTRL in the - * first place. - * -- * No need for SCF_ist_wrmsr because Xen's value is restored -+ * No need for SCF_ist_sc_msr because Xen's value is restored - * atomically WRT NMIs in the VMExit path. - * - * TODO: Adjust cpu_has_svm_spec_ctrl to be usable earlier on boot. -diff --git a/xen/include/asm-x86/spec_ctrl.h b/xen/include/asm-x86/spec_ctrl.h -index 60d6d2dc9407..6f8b0e09348e 100644 ---- a/xen/include/asm-x86/spec_ctrl.h -+++ b/xen/include/asm-x86/spec_ctrl.h -@@ -31,7 +31,7 @@ - * context switched per domain, and some inhibited in the S3 path. - */ - #define SCF_use_shadow (1 << 0) --#define SCF_ist_wrmsr (1 << 1) -+#define SCF_ist_sc_msr (1 << 1) - #define SCF_ist_rsb (1 << 2) - #define SCF_verw (1 << 3) - -@@ -46,7 +46,7 @@ - * These are the controls to inhibit on the S3 resume path until microcode has - * been reloaded. - */ --#define SCF_IST_MASK (SCF_ist_wrmsr) -+#define SCF_IST_MASK (SCF_ist_sc_msr) - - /* - * Some speculative protections are per-domain. These settings are merged -diff --git a/xen/include/asm-x86/spec_ctrl_asm.h b/xen/include/asm-x86/spec_ctrl_asm.h -index 66b00d511fc6..0ff1b118f882 100644 ---- a/xen/include/asm-x86/spec_ctrl_asm.h -+++ b/xen/include/asm-x86/spec_ctrl_asm.h -@@ -266,8 +266,8 @@ - - .L\@_skip_rsb: - -- test $SCF_ist_wrmsr, %al -- jz .L\@_skip_wrmsr -+ test $SCF_ist_sc_msr, %al -+ jz .L\@_skip_msr_spec_ctrl - - xor %edx, %edx - testb $3, UREGS_cs(%rsp) -@@ -290,7 +290,7 @@ UNLIKELY_DISPATCH_LABEL(\@_serialise): - * to speculate around the WRMSR. As a result, we need a dispatch - * serialising instruction in the else clause. - */ --.L\@_skip_wrmsr: -+.L\@_skip_msr_spec_ctrl: - lfence - UNLIKELY_END(\@_serialise) - .endm -@@ -301,7 +301,7 @@ UNLIKELY_DISPATCH_LABEL(\@_serialise): - * Requires %rbx=stack_end - * Clobbers %rax, %rcx, %rdx - */ -- testb $SCF_ist_wrmsr, STACK_CPUINFO_FIELD(spec_ctrl_flags)(%rbx) -+ testb $SCF_ist_sc_msr, STACK_CPUINFO_FIELD(spec_ctrl_flags)(%rbx) - jz .L\@_skip - - DO_SPEC_CTRL_EXIT_TO_XEN --- -2.37.4 - |