From 0b5530861eec1cf3f240a6a4a0ceed58f67fbcc5 Mon Sep 17 00:00:00 2001 From: Yosry Ahmed Date: Mon, 5 Aug 2024 20:12:47 +0000 Subject: [PATCH] x86/hyperv: use helpers to read control registers in hv_snp_boot_ap() Use native_read_cr*() helpers to read control registers into vmsa->cr* instead of open-coded assembly. No functional change intended, unless there was a purpose to specifying rax. Signed-off-by: Yosry Ahmed Link: https://lore.kernel.org/r/20240805201247.427982-1-yosryahmed@google.com Signed-off-by: Wei Liu Message-ID: <20240805201247.427982-1-yosryahmed@google.com> --- arch/x86/hyperv/ivm.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c index b4a851d27c7c..60fc3ed72830 100644 --- a/arch/x86/hyperv/ivm.c +++ b/arch/x86/hyperv/ivm.c @@ -321,9 +321,9 @@ int hv_snp_boot_ap(u32 cpu, unsigned long start_ip) vmsa->efer = native_read_msr(MSR_EFER); - asm volatile("movq %%cr4, %%rax;" : "=a" (vmsa->cr4)); - asm volatile("movq %%cr3, %%rax;" : "=a" (vmsa->cr3)); - asm volatile("movq %%cr0, %%rax;" : "=a" (vmsa->cr0)); + vmsa->cr4 = native_read_cr4(); + vmsa->cr3 = __native_read_cr3(); + vmsa->cr0 = native_read_cr0(); vmsa->xcr0 = 1; vmsa->g_pat = HV_AP_INIT_GPAT_DEFAULT; -- 2.20.1