leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge branch 'kvm-arm64/misc-5.13' into kvmarm-master/next

Browse Source 
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier 2021-04-13 15:35:58 +01:00
commit ad569b70aa
5 changed files with 40 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
Documentation/virt/kvm/api.rst
View File

@ -3115,6 +3115,18 @@ optional features it should have.  This will cause a reset of the cpu
registers to their initial values.  If this is not called, KVM_RUN will
return ENOEXEC for that vcpu.
The initial values are defined as:
- Processor state:
* AArch64: EL1h, D, A, I and F bits set. All other bits
are cleared.
* AArch32: SVC, A, I and F bits set. All other bits are
cleared.
- General Purpose registers, including PC and SP: set to 0
- FPSIMD/NEON registers: set to 0
- SVE registers: set to 0
- System registers: Reset to their architecturally defined
values as for a warm reset to EL1 (resp. SVC)
Note that because some registers reflect machine topology, all vcpus
should be created before this ioctl is invoked.

4
MAINTAINERS
View File

@ -9767,10 +9767,10 @@ F: virt/kvm/*
KERNEL VIRTUAL MACHINE FOR ARM64 (KVM/arm64)
M: Marc Zyngier <maz@kernel.org>
R: James Morse <james.morse@arm.com>
R: Julien Thierry <julien.thierry.kdev@gmail.com>
R: Alexandru Elisei <alexandru.elisei@arm.com>
R: Suzuki K Poulose <suzuki.poulose@arm.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: kvmarm@lists.cs.columbia.edu
L: kvmarm@lists.cs.columbia.edu (moderated for non-subscribers)
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git
F: arch/arm64/include/asm/kvm*

4
arch/arm64/kvm/arm.c
View File

@ -1881,8 +1881,10 @@ static int init_hyp_mode(void)
if (is_protected_kvm_enabled()) {
init_cpu_logical_map();
if (!init_psci_relay())
if (!init_psci_relay()) {
err = -ENODEV;
goto out_err;
}
}
if (is_protected_kvm_enabled()) {

18
arch/arm64/kvm/hyp/nvhe/gen-hyprel.c
View File

@ -50,6 +50,18 @@
#ifndef R_AARCH64_ABS64
#define R_AARCH64_ABS64 257
#endif
#ifndef R_AARCH64_PREL64
#define R_AARCH64_PREL64 260
#endif
#ifndef R_AARCH64_PREL32
#define R_AARCH64_PREL32 261
#endif
#ifndef R_AARCH64_PREL16
#define R_AARCH64_PREL16 262
#endif
#ifndef R_AARCH64_PLT32
#define R_AARCH64_PLT32 314
#endif
#ifndef R_AARCH64_LD_PREL_LO19
#define R_AARCH64_LD_PREL_LO19 273
#endif
@ -371,6 +383,12 @@ static void emit_rela_section(Elf64_Shdr *sh_rela)
case R_AARCH64_ABS64:
emit_rela_abs64(rela, sh_orig_name);
break;
/* Allow position-relative data relocations. */
case R_AARCH64_PREL64:
case R_AARCH64_PREL32:
case R_AARCH64_PREL16:
case R_AARCH64_PLT32:
break;
/* Allow relocations to generate PC-relative addressing. */
case R_AARCH64_LD_PREL_LO19:
case R_AARCH64_ADR_PREL_LO21:

5
arch/arm64/kvm/reset.c
View File

@ -238,6 +238,11 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu)
/* Reset core registers */
memset(vcpu_gp_regs(vcpu), 0, sizeof(*vcpu_gp_regs(vcpu)));
memset(&vcpu->arch.ctxt.fp_regs, 0, sizeof(vcpu->arch.ctxt.fp_regs));
vcpu->arch.ctxt.spsr_abt = 0;
vcpu->arch.ctxt.spsr_und = 0;
vcpu->arch.ctxt.spsr_irq = 0;
vcpu->arch.ctxt.spsr_fiq = 0;
vcpu_gp_regs(vcpu)->pstate = pstate;
/* Reset system registers */