tmakin/ack-tegra
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: arm64: Use guest ID register values for the sake of emulation

Browse Source 
Since KVM now supports per-VM ID registers, use per-VM ID register
values for the sake of emulation for DBGDIDR and LORegion.

Signed-off-by: Jing Zhang <jingzhangos@google.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20231003230408.3405722-4-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Jing Zhang
2023-10-03 23:03:59 +00:00
committed by Oliver Upton
parent 6656cda0f3
commit 8b6958d6ac
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/arm64/kvm/sys_regs.c
+3 -3
View File
@@ -379,7 +379,7 @@ static bool trap_loregion(struct kvm_vcpu *vcpu,
struct sys_reg_params *p,
const struct sys_reg_desc *r)
{
u64 val = read_sanitised_ftr_reg(SYS_ID_AA64MMFR1_EL1);
u64 val = IDREG(vcpu->kvm, SYS_ID_AA64MMFR1_EL1);
u32 sr = reg_to_encoding(r);
if (!(val & (0xfUL << ID_AA64MMFR1_EL1_LO_SHIFT))) {
@@ -2445,8 +2445,8 @@ static bool trap_dbgdidr(struct kvm_vcpu *vcpu,
if (p->is_write) {
return ignore_write(vcpu, p);
} else {
u64 dfr = read_sanitised_ftr_reg(SYS_ID_AA64DFR0_EL1);
u64 pfr = read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1);
u64 dfr = IDREG(vcpu->kvm, SYS_ID_AA64DFR0_EL1);
u64 pfr = IDREG(vcpu->kvm, SYS_ID_AA64PFR0_EL1);
u32 el3 = !!cpuid_feature_extract_unsigned_field(pfr, ID_AA64PFR0_EL1_EL3_SHIFT);
p->regval = ((((dfr >> ID_AA64DFR0_EL1_WRPs_SHIFT) & 0xf) << 28) |